Forgot to include lhnet in the previous commit and tried to abort the commit but...
authorhavoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Sun, 22 Jun 2003 10:07:16 +0000 (10:07 +0000)
committerhavoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Sun, 22 Jun 2003 10:07:16 +0000 (10:07 +0000)
git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@3094 d7cf8633-e32d-0410-b094-e92efae38249

lhnet.c [new file with mode: 0644]
lhnet.h [new file with mode: 0644]
netconn.c [new file with mode: 0755]
netconn.h [new file with mode: 0755]

diff --git a/lhnet.c b/lhnet.c
new file mode 100644 (file)
index 0000000..b728fa2
--- /dev/null
+++ b/lhnet.c
@@ -0,0 +1,748 @@
+
+// Written by Forest Hale 2003-06-15 and placed into public domain.
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <string.h>
+#ifdef WIN32
+#include <winsock.h>
+#else
+#include <netdb.h>
+//#include <netinet/in.h>
+//#include <arpa/inet.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#endif
+
+// for Z_Malloc/Z_Free in quake
+#if 1
+#include "zone.h"
+#else
+#define Z_Malloc malloc
+#define Z_Free free
+#endif
+
+#include "lhnet.h"
+
+int LHNETADDRESS_FromPort(lhnetaddress_t *address, int addresstype, int port)
+{
+       switch(addresstype)
+       {
+       case LHNETADDRESSTYPE_LOOP:
+               // local:port  (loopback)
+               memset(address, 0, sizeof(*address));
+               address->addresstype = LHNETADDRESSTYPE_LOOP;
+               address->addressdata.loop.port = port;
+               return 1;
+       case LHNETADDRESSTYPE_INET4:
+               // 0.0.0.0:port  (INADDR_ANY, binds to all interfaces)
+               memset(address, 0, sizeof(*address));
+               address->addresstype = LHNETADDRESSTYPE_INET4;
+               address->addressdata.inet4.family = LHNETADDRESSTYPE_INET4_FAMILY;
+               address->addressdata.inet4.port = htons(port);
+               return 1;
+       case LHNETADDRESSTYPE_INET6:
+               // [0:0:0:0:0:0:0:0]:port  (IN6ADDR_ANY, binds to all interfaces)
+               memset(address, 0, sizeof(*address));
+               address->addresstype = LHNETADDRESSTYPE_INET6;
+               address->addressdata.inet6.family = LHNETADDRESSTYPE_INET6_FAMILY;
+               address->addressdata.inet6.port = htons(port);
+               return 1;
+       }
+       return 0;
+}
+
+int LHNETADDRESS_FromString(lhnetaddress_t *address, const char *string, int defaultport)
+{
+       int i, port, namelen, number;
+       struct hostent *hostentry;
+       const char *colon;
+       char name[128];
+       memset(address, 0, sizeof(*address));
+       address->addresstype = LHNETADDRESSTYPE_NONE;
+       port = 0;
+       colon = strrchr(string, ':');
+       if (colon)
+               port = atoi(colon + 1);
+       else
+               colon = string + strlen(string);
+       if (port == 0)
+               port = defaultport;
+       namelen = colon - string;
+       if (namelen > 127)
+               namelen = 127;
+       if (string[0] == '[' && namelen > 0 && string[namelen-1] == ']') // ipv6
+       {
+               string++;
+               namelen -= 2;
+       }
+       memcpy(name, string, namelen);
+       name[namelen] = 0;
+       // handle loopback
+       if (!strcmp(name, "local"))
+       {
+               address->addresstype = LHNETADDRESSTYPE_LOOP;
+               address->addressdata.loop.port = port;
+               return 1;
+       }
+       // try to parse with gethostbyname first, because it can handle ipv4 and
+       // ipv6 (in various address formats), as well as dns names
+       for (i = 0;i < 3;i++)
+       {
+               if (i == 0)
+                       hostentry = gethostbyaddr(name, namelen, LHNETADDRESSTYPE_INET6_FAMILY);
+               else if (i == 1)
+                       hostentry = gethostbyaddr(name, namelen, LHNETADDRESSTYPE_INET4_FAMILY);
+               else
+                       hostentry = gethostbyname(name);
+               if (hostentry)
+               {
+                       if (hostentry->h_addrtype == LHNETADDRESSTYPE_INET6_FAMILY)
+                       {
+                               // great it worked
+                               address->addresstype = LHNETADDRESSTYPE_INET6;
+                               address->addressdata.inet6.family = hostentry->h_addrtype;
+                               address->addressdata.inet6.port = htons(port);
+                               memcpy(address->addressdata.inet6.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet6.address));
+#ifdef STANDALONETEST
+                               printf("gethostbyname(\"%s\") returned ipv6 address [%x:%x:%x:%x:%x:%x:%x:%x]:%d\n", name, (int)address->addressdata.inet6.address[0], (int)address->addressdata.inet6.address[1], (int)address->addressdata.inet6.address[2], (int)address->addressdata.inet6.address[3], (int)address->addressdata.inet6.address[4], (int)address->addressdata.inet6.address[5], (int)address->addressdata.inet6.address[6], (int)address->addressdata.inet6.address[7], (int)ntohs(address->addressdata.inet6.port));
+#endif
+                               return 1;
+                       }
+                       else if (hostentry->h_addrtype == LHNETADDRESSTYPE_INET4_FAMILY)
+                       {
+                               // great it worked
+                               address->addresstype = LHNETADDRESSTYPE_INET4;
+                               address->addressdata.inet4.family = hostentry->h_addrtype;
+                               address->addressdata.inet4.port = htons(port);
+                               memcpy(address->addressdata.inet4.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet4.address));
+#ifdef STANDALONETEST
+                               printf("gethostbyname(\"%s\") returned ipv4 address %d.%d.%d.%d:%d\n", name, (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3], (int)ntohs(address->addressdata.inet4.port));
+#endif
+                               return 1;
+                       }
+               }
+       }
+       // failed, try to parse as an ipv4 address as a fallback (is this needed?)
+#ifdef STANDALONETEST
+       printf("gethostbyname and gethostbyaddr failed on address \"%s\"\n", name);
+#endif
+       for (i = 0, number = 0;i < 4;string++)
+       {
+               if (*string >= '0' && *string <= '9')
+                       number = number * 10 + (*string - '0');
+               else if (number < 256 && (*string == '.' || *string == ':'))
+               {
+                       address->addressdata.inet4.address[i++] = number;
+                       number = 0;
+               }
+               else
+                       break;
+               if (*string == 0 || *string == ':')
+                       break;
+       }
+       if (i == 4)
+       {
+               // parsed a valid ipv4 address
+               address->addresstype = LHNETADDRESSTYPE_INET4;
+               address->addressdata.inet4.family = LHNETADDRESSTYPE_INET4_FAMILY;
+               address->addressdata.inet4.port = htons(port);
+#ifdef STANDALONETEST
+               printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %d.%d.%d.%d:%d\n", string, (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3], (int)ntohs(address->addressdata.inet4.port));
+#endif
+               return 1;
+       }
+       return 0;
+}
+
+int LHNETADDRESS_ToString(const lhnetaddress_t *address, char *string, int stringbuffersize, int includeport)
+{
+       *string = 0;
+       switch(address->addresstype)
+       {
+       default:
+               break;
+       case LHNETADDRESSTYPE_LOOP:
+               if (includeport)
+               {
+                       if (stringbuffersize >= 12)
+                       {
+                               sprintf(string, "local:%d", (int)address->addressdata.loop.port);
+                               return 1;
+                       }
+               }
+               else
+               {
+                       if (stringbuffersize >= 6)
+                       {
+                               strcpy(string, "local");
+                               return 1;
+                       }
+               }
+               break;
+       case LHNETADDRESSTYPE_INET4:
+               if (includeport)
+               {
+                       if (stringbuffersize >= 22)
+                       {
+                               sprintf(string, "%d.%d.%d.%d:%d", (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3], (int)ntohs(address->addressdata.inet4.port));
+                               return 1;
+                       }
+               }
+               else
+               {
+                       if (stringbuffersize >= 16)
+                       {
+                               sprintf(string, "%d.%d.%d.%d", (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3]);
+                               return 1;
+                       }
+               }
+               break;
+       case LHNETADDRESSTYPE_INET6:
+               if (includeport)
+               {
+                       if (stringbuffersize >= 88)
+                       {
+                               sprintf(string, "[%x:%x:%x:%x:%x:%x:%x:%x]:%d", (int)address->addressdata.inet6.address[0], (int)address->addressdata.inet6.address[1], (int)address->addressdata.inet6.address[2], (int)address->addressdata.inet6.address[3], (int)address->addressdata.inet6.address[4], (int)address->addressdata.inet6.address[5], (int)address->addressdata.inet6.address[6], (int)address->addressdata.inet6.address[7], (int)ntohs(address->addressdata.inet6.port));
+                               return 1;
+                       }
+               }
+               else
+               {
+                       if (stringbuffersize >= 80)
+                       {
+                               sprintf(string, "%x:%x:%x:%x:%x:%x:%x:%x", (int)address->addressdata.inet6.address[0], (int)address->addressdata.inet6.address[1], (int)address->addressdata.inet6.address[2], (int)address->addressdata.inet6.address[3], (int)address->addressdata.inet6.address[4], (int)address->addressdata.inet6.address[5], (int)address->addressdata.inet6.address[6], (int)address->addressdata.inet6.address[7]);
+                               return 1;
+                       }
+               }
+               break;
+       }
+       return 0;
+}
+
+int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address)
+{
+       return address->addresstype;
+}
+
+int LHNETADDRESS_GetPort(const lhnetaddress_t *address)
+{
+       switch(address->addresstype)
+       {
+       case LHNETADDRESSTYPE_LOOP:
+               return address->addressdata.loop.port;
+       case LHNETADDRESSTYPE_INET4:
+               return ntohs(address->addressdata.inet4.port);
+       case LHNETADDRESSTYPE_INET6:
+               return ntohs(address->addressdata.inet6.port);
+       default:
+               return -1;
+       }
+}
+
+int LHNETADDRESS_SetPort(lhnetaddress_t *address, int port)
+{
+       switch(address->addresstype)
+       {
+       case LHNETADDRESSTYPE_LOOP:
+               address->addressdata.loop.port = port;
+               return 1;
+       case LHNETADDRESSTYPE_INET4:
+               address->addressdata.inet4.port = htons(port);
+               return 1;
+       case LHNETADDRESSTYPE_INET6:
+               address->addressdata.inet6.port = htons(port);
+               return 1;
+       default:
+               return 0;
+       }
+}
+
+int LHNETADDRESS_Compare(const lhnetaddress_t *address1, const lhnetaddress_t *address2)
+{
+       if (address1->addresstype != address2->addresstype)
+               return 1;
+       switch(address1->addresstype)
+       {
+       case LHNETADDRESSTYPE_LOOP:
+               if (address1->addressdata.loop.port != address2->addressdata.loop.port)
+                       return -1;
+               return 0;
+       case LHNETADDRESSTYPE_INET4:
+               if (address1->addressdata.inet4.family != address2->addressdata.inet4.family)
+                       return 1;
+               if (memcmp(address1->addressdata.inet4.address, address2->addressdata.inet4.address, sizeof(address1->addressdata.inet4.address)))
+                       return 1;
+               if (address1->addressdata.inet4.port != address2->addressdata.inet4.port)
+                       return -1;
+               return 0;
+       case LHNETADDRESSTYPE_INET6:
+               if (address1->addressdata.inet6.family != address2->addressdata.inet6.family)
+                       return 1;
+               if (memcmp(address1->addressdata.inet6.address, address2->addressdata.inet6.address, sizeof(address1->addressdata.inet6.address)))
+                       return 1;
+               if (address1->addressdata.inet6.port != address2->addressdata.inet6.port)
+                       return -1;
+               return 0;
+       default:
+               return 1;
+       }
+}
+
+typedef struct lhnetpacket_s
+{
+       void *data;
+       int length;
+       int sourceport;
+       int destinationport;
+       time_t timeout;
+       struct lhnetpacket_s *next, *prev;
+}
+lhnetpacket_t;
+
+static int lhnet_active;
+static lhnetsocket_t lhnet_socketlist;
+static lhnetpacket_t lhnet_packetlist;
+#ifdef WIN32
+static int lhnet_didWSAStartup = 0;
+static WSADATA lhnet_winsockdata;
+#endif
+
+void LHNET_Init(void)
+{
+       if (lhnet_active)
+               return;
+       lhnet_socketlist.next = lhnet_socketlist.prev = &lhnet_socketlist;
+       lhnet_packetlist.next = lhnet_packetlist.prev = &lhnet_packetlist;
+       lhnet_active = 1;
+}
+
+void LHNET_Shutdown(void)
+{
+       lhnetpacket_t *p;
+       if (!lhnet_active)
+               return;
+       while (lhnet_socketlist.next != &lhnet_socketlist)
+               LHNET_CloseSocket(lhnet_socketlist.next);
+       while (lhnet_packetlist.next != &lhnet_packetlist)
+       {
+               p = lhnet_packetlist.next;
+               p->prev->next = p->next;
+               p->next->prev = p->prev;
+               Z_Free(p);
+       }
+       lhnet_active = 0;
+}
+
+lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
+{
+       lhnetsocket_t *lhnetsocket, *s;
+       lhnetsocket = Z_Malloc(sizeof(*lhnetsocket));
+       if (lhnetsocket)
+       {
+               memset(lhnetsocket, 0, sizeof(*lhnetsocket));
+               lhnetsocket->address = *address;
+               switch(lhnetsocket->address.addresstype)
+               {
+               case LHNETADDRESSTYPE_LOOP:
+                       if (lhnetsocket->address.addressdata.loop.port == 0)
+                       {
+                               // allocate a port dynamically
+                               // this search will always terminate because there is never
+                               // an allocated socket with port 0, so if the number wraps it
+                               // will find the port is unused, and then refuse to use port
+                               // 0, causing an intentional failure condition
+                               lhnetsocket->address.addressdata.loop.port = 1024;
+                               for (;;)
+                               {
+                                       for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
+                                               if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.addressdata.loop.port == lhnetsocket->address.addressdata.loop.port)
+                                                       break;
+                                       if (s == &lhnet_socketlist)
+                                               break;
+                                       lhnetsocket->address.addressdata.loop.port++;
+                               }
+                       }
+                       // check if the port is available
+                       for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
+                               if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.addressdata.loop.port == lhnetsocket->address.addressdata.loop.port)
+                                       break;
+                       if (s == &lhnet_socketlist && lhnetsocket->address.addressdata.loop.port != 0)
+                       {
+                               lhnetsocket->next = &lhnet_socketlist;
+                               lhnetsocket->prev = lhnetsocket->next->prev;
+                               lhnetsocket->next->prev = lhnetsocket;
+                               lhnetsocket->prev->next = lhnetsocket;
+                               return lhnetsocket;
+                       }
+                       break;
+               case LHNETADDRESSTYPE_INET4:
+               case LHNETADDRESSTYPE_INET6:
+#ifdef WIN32
+                       if (!lhnet_didWSAStartup && !WSAStartup(MAKEWORD(1, 1), &lhnet_winsockdata))
+                       {
+                               lhnet_didWSAStartup = 1;
+#else
+                       {
+#endif
+                               if (address->addresstype == LHNETADDRESSTYPE_INET6)
+                                       lhnetsocket->inetsocket = socket(LHNETADDRESSTYPE_INET6_FAMILY, SOCK_DGRAM, IPPROTO_UDP);
+                               else
+                                       lhnetsocket->inetsocket = socket(LHNETADDRESSTYPE_INET4_FAMILY, SOCK_DGRAM, IPPROTO_UDP);
+                               if (lhnetsocket->inetsocket != -1)
+                               {
+#ifdef WIN32
+                                       u_long _true = 1;
+                                       if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
+#else
+                                       char _true = 1;
+                                       if (ioctl(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
+#endif
+                                       {
+                                               if (bind(lhnetsocket->inetsocket, (void *)&lhnetsocket->address.addressdata, address->addresstype == LHNETADDRESSTYPE_INET6 ? sizeof(lhnetsocket->address.addressdata.inet6) : sizeof(lhnetsocket->address.addressdata.inet4)) != -1)
+                                               {
+                                                       lhnetsocket->next = &lhnet_socketlist;
+                                                       lhnetsocket->prev = lhnetsocket->next->prev;
+                                                       lhnetsocket->next->prev = lhnetsocket;
+                                                       lhnetsocket->prev->next = lhnetsocket;
+                                                       return lhnetsocket;
+                                               }
+                                       }
+#ifdef WIN32
+                                       closesocket(lhnetsocket->inetsocket);
+#else
+                                       close(lhnetsocket->inetsocket);
+#endif
+                               }
+                       }
+                       break;
+               default:
+                       break;
+               }
+               Z_Free(lhnetsocket);
+       }
+       return NULL;
+}
+
+void LHNET_CloseSocket(lhnetsocket_t *lhnetsocket)
+{
+       if (lhnetsocket)
+       {
+               // unlink from socket list
+               if (lhnetsocket->next == NULL)
+                       return; // invalid!
+               lhnetsocket->next->prev = lhnetsocket->prev;
+               lhnetsocket->prev->next = lhnetsocket->next;
+               lhnetsocket->next = NULL;
+               lhnetsocket->prev = NULL;
+
+               // no special close code for loopback, just inet
+               if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4 || lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
+               {
+#ifdef WIN32
+                       closesocket(lhnetsocket->inetsocket);
+#else
+                       close(lhnetsocket->inetsocket);
+#endif
+               }
+#ifdef WIN32
+               if (lhnet_socketlist.next == &lhnet_socketlist && lhnet_didWSAStartup)
+               {
+                       lhnet_didWSAStartup = 0;
+                       WSACleanup();
+               }
+#endif
+               Z_Free(lhnetsocket);
+       }
+}
+
+lhnetaddress_t *LHNET_AddressFromSocket(lhnetsocket_t *sock)
+{
+       return &sock->address;
+}
+
+int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *address)
+{
+       int value = 0;
+       if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
+       {
+               time_t currenttime;
+               lhnetpacket_t *p, *pnext;
+               // scan for any old packets to timeout while searching for a packet
+               // that is waiting to be delivered to this socket
+               currenttime = time(NULL);
+               for (p = lhnet_packetlist.next;p != &lhnet_packetlist;p = pnext)
+               {
+                       pnext = p->next;
+                       if (value == 0 && p->destinationport == lhnetsocket->address.addressdata.loop.port)
+                       {
+                               if (p->length <= maxcontentlength)
+                               {
+                                       *address = lhnetsocket->address;
+                                       address->addressdata.loop.port = p->sourceport;
+                                       memcpy(content, p->data, p->length);
+                                       value = p->length;
+                               }
+                               else
+                                       value = -1;
+                               // unlink and free
+                               p->next->prev = p->prev;
+                               p->prev->next = p->next;
+                               Z_Free(p);
+                       }
+                       else if (p->timeout < currenttime)
+                       {
+                               // unlink and free
+                               p->next->prev = p->prev;
+                               p->prev->next = p->next;
+                               Z_Free(p);
+                       }
+               }
+       }
+       else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
+       {
+               int inetaddresslength;
+               address->addresstype = LHNETADDRESSTYPE_NONE;
+               inetaddresslength = sizeof(address->addressdata.inet4);
+               value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, (struct sockaddr *)&address->addressdata.inet4, &inetaddresslength);
+               if (value > 0)
+               {
+                       address->addresstype = LHNETADDRESSTYPE_INET4;
+                       return value;
+               }
+               else if (value == -1)
+               {
+#ifdef WIN32
+                       int e = WSAGetLastError();
+                       if (e == WSAEWOULDBLOCK || e == WSAECONNREFUSED)
+                               return 0;
+#else
+                       if (errno == EWOULDBLOCK || errno == ECONNREFUSED)
+                               return 0;
+#endif
+               }
+       }
+       else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
+       {
+               int inetaddresslength;
+               address->addresstype = LHNETADDRESSTYPE_NONE;
+               inetaddresslength = sizeof(address->addressdata.inet6);
+               value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, (struct sockaddr *)&address->addressdata.inet6, &inetaddresslength);
+               if (value > 0)
+               {
+                       address->addresstype = LHNETADDRESSTYPE_INET6;
+                       return value;
+               }
+               else if (value == -1)
+               {
+#ifdef WIN32
+                       int e = WSAGetLastError();
+                       if (e == WSAEWOULDBLOCK || e == WSAECONNREFUSED)
+                               return 0;
+#else
+                       if (errno == EWOULDBLOCK || errno == ECONNREFUSED)
+                               return 0;
+#endif
+               }
+       }
+       return value;
+}
+
+int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentlength, const lhnetaddress_t *address)
+{
+       int value = -1;
+       if (lhnetsocket->address.addresstype != address->addresstype)
+               return -1;
+       if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
+       {
+               lhnetpacket_t *p;
+               p = Z_Malloc(sizeof(*p) + contentlength);
+               p->data = (void *)(p + 1);
+               memcpy(p->data, content, contentlength);
+               p->length = contentlength;
+               p->sourceport = lhnetsocket->address.addressdata.loop.port;
+               p->destinationport = address->addressdata.loop.port;
+               p->timeout = time(NULL) + 10;
+               p->next = &lhnet_packetlist;
+               p->prev = p->next->prev;
+               p->next->prev = p;
+               p->prev->next = p;
+               value = contentlength;
+       }
+       else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
+       {
+               value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addressdata.inet4, sizeof(address->addressdata.inet4));
+               if (value == -1)
+               {
+#ifdef WIN32
+                       int e = WSAGetLastError();
+                       if (e == WSAEWOULDBLOCK)
+                               return 0;
+#else
+                       if (errno == EWOULDBLOCK)
+                               return 0;
+#endif
+               }
+       }
+       else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
+       {
+               value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addressdata.inet6, sizeof(address->addressdata.inet6));
+               if (value == -1)
+               {
+#ifdef WIN32
+                       int e = WSAGetLastError();
+                       if (e == WSAEWOULDBLOCK)
+                               return 0;
+#else
+                       if (errno == EWOULDBLOCK)
+                               return 0;
+#endif
+               }
+       }
+       return value;
+}
+
+#ifdef STANDALONETEST
+int main(int argc, char **argv)
+{
+       lhnetsocket_t *sock[16], *sendsock;
+       int i;
+       int numsockets;
+       int count;
+       int length;
+       int port;
+       time_t oldtime;
+       time_t newtime;
+       char *sendmessage;
+       int sendmessagelength;
+       lhnetaddress_t destaddress;
+       lhnetaddress_t receiveaddress;
+       lhnetaddress_t sockaddress[16];
+       char buffer[1536], addressstring[128], addressstring2[128];
+       if ((argc == 2 || argc == 5) && (port = atoi(argv[1])) >= 1 && port < 65535)
+       {
+               printf("calling LHNET_Init()\n");
+               LHNET_Init();
+
+               numsockets = 0;
+               LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_LOOP, port);
+               LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET4, port);
+               LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET6, port+1);
+
+               sendsock = NULL;
+               sendmessage = NULL;
+               sendmessagelength = 0;
+
+               for (i = 0;i < numsockets;i++)
+               {
+                       LHNETADDRESS_ToString(&sockaddress[i], addressstring, sizeof(addressstring), 1);
+                       printf("calling LHNET_OpenSocket_Connectionless(<%s>)\n", addressstring);
+                       if ((sock[i] = LHNET_OpenSocket_Connectionless(&sockaddress[i])))
+                       {
+                               LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
+                               printf("opened socket successfully (address \"%s\")\n", addressstring2);
+                       }
+                       else
+                       {
+                               printf("failed to open socket\n");
+                               if (i == 0)
+                               {
+                                       LHNET_Shutdown();
+                                       return -1;
+                               }
+                       }
+               }
+               count = 0;
+               if (argc == 5)
+               {
+                       count = atoi(argv[2]);
+                       if (LHNETADDRESS_FromString(&destaddress, argv[3], -1))
+                       {
+                               sendmessage = argv[4];
+                               sendmessagelength = strlen(sendmessage);
+                               sendsock = NULL;
+                               for (i = 0;i < numsockets;i++)
+                                       if (sock[i] && LHNETADDRESS_GetAddressType(&destaddress) == LHNETADDRESS_GetAddressType(&sockaddress[i]))
+                                               sendsock = sock[i];
+                               if (sendsock == NULL)
+                               {
+                                       printf("Could not find an open socket matching the addresstype (%i) of destination address, switching to listen only mode\n", LHNETADDRESS_GetAddressType(&destaddress));
+                                       argc = 2;
+                               }
+                       }
+                       else
+                       {
+                               printf("LHNETADDRESS_FromString did not like the address \"%s\", switching to listen only mode\n", argv[3]);
+                               argc = 2;
+                       }
+               }
+               printf("started, now listening for \"exit\" on the opened sockets\n");
+               oldtime = time(NULL);
+               for(;;)
+               {
+#ifdef WIN32
+                       Sleep(1);
+#else
+                       usleep(1);
+#endif
+                       for (i = 0;i < numsockets;i++)
+                       {
+                               if (sock[i])
+                               {
+                                       length = LHNET_Read(sock[i], buffer, sizeof(buffer), &receiveaddress);
+                                       if (length < 0)
+                                               printf("localsock read error: length < 0");
+                                       else if (length > 0 && length < (int)sizeof(buffer))
+                                       {
+                                               buffer[length] = 0;
+                                               LHNETADDRESS_ToString(&receiveaddress, addressstring, sizeof(addressstring), 1);
+                                               LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
+                                               printf("received message \"%s\" from \"%s\" on socket \"%s\"\n", buffer, addressstring, addressstring2);
+                                               if (!strcmp(buffer, "exit"))
+                                                       break;
+                                       }
+                               }
+                       }
+                       if (i < numsockets)
+                               break;
+                       if (argc == 5 && count > 0)
+                       {
+                               newtime = time(NULL);
+                               if (newtime != oldtime)
+                               {
+                                       LHNETADDRESS_ToString(&destaddress, addressstring, sizeof(addressstring), 1);
+                                       LHNETADDRESS_ToString(LHNET_AddressFromSocket(sendsock), addressstring2, sizeof(addressstring2), 1);
+                                       printf("calling LHNET_Write(<%s>, \"%s\", %i, <%s>)\n", addressstring2, sendmessage, sendmessagelength, addressstring);
+                                       length = LHNET_Write(sendsock, sendmessage, sendmessagelength, &destaddress);
+                                       if (length == sendmessagelength)
+                                               printf("sent successfully\n");
+                                       else
+                                               printf("LH_Write failed, returned %i (length of message was %i)\n", length, strlen(argv[4]));
+                                       oldtime = newtime;
+                                       count--;
+                                       if (count <= 0)
+                                               printf("Done sending, still listening for \"exit\"\n");
+                               }
+                       }
+               }
+               for (i = 0;i < numsockets;i++)
+               {
+                       if (sock[i])
+                       {
+                               LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
+                               printf("calling LHNET_CloseSocket(<%s>)\n", addressstring2);
+                               LHNET_CloseSocket(sock[i]);
+                       }
+               }
+               printf("calling LHNET_Shutdown()\n");
+               LHNET_Shutdown();
+               return 0;
+       }
+       printf("Testing code for lhnet.c\nusage: lhnettest <localportnumber> [<sendnumberoftimes> <sendaddress:port> <sendmessage>]\n");
+       return -1;
+}
+#endif
+
diff --git a/lhnet.h b/lhnet.h
new file mode 100644 (file)
index 0000000..b9868a1
--- /dev/null
+++ b/lhnet.h
@@ -0,0 +1,80 @@
+
+// Written by Forest Hale 2003-06-15 and placed into public domain.
+
+#ifndef LHNET_H
+#define LHNET_H
+
+#define LHNETADDRESSTYPE_NONE 0
+#define LHNETADDRESSTYPE_LOOP 1
+#define LHNETADDRESSTYPE_INET4 2
+#define LHNETADDRESSTYPE_INET6 3
+
+typedef struct lhnetaddress_loop_s
+{
+       unsigned short port;
+}
+lhnetaddress_loop_t;
+
+#define LHNETADDRESSTYPE_INET4_FAMILY 2
+#define LHNETADDRESSTYPE_INET6_FAMILY 10
+
+// compatible with sockaddr_in
+typedef struct lhnetaddress_inet4_s
+{
+       unsigned short family; // 2
+       unsigned short port;
+       unsigned char address[4];
+       unsigned char padding[8]; // to match sockaddr_in
+}
+lhnetaddress_inet4_t;
+
+// compatible with sockaddr_in6
+typedef struct lhnetaddress_inet6_s
+{
+       unsigned short family; // 10
+       unsigned short port;
+       unsigned int flowinfo;
+       unsigned short address[8];
+       unsigned int scope_id;
+}
+lhnetaddress_inet6_t;
+
+typedef struct lhnetaddress_s
+{
+       int addresstype;
+       union
+       {
+               lhnetaddress_loop_t loop;
+               lhnetaddress_inet4_t inet4;
+               lhnetaddress_inet6_t inet6;
+       }
+       addressdata;
+}
+lhnetaddress_t;
+
+int LHNETADDRESS_FromPort(lhnetaddress_t *address, int addresstype, int port);
+int LHNETADDRESS_FromString(lhnetaddress_t *address, const char *string, int defaultport);
+int LHNETADDRESS_ToString(const lhnetaddress_t *address, char *string, int stringbuffersize, int includeport);
+int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address);
+int LHNETADDRESS_GetPort(const lhnetaddress_t *address);
+int LHNETADDRESS_SetPort(lhnetaddress_t *address, int port);
+int LHNETADDRESS_Compare(const lhnetaddress_t *address1, const lhnetaddress_t *address2);
+
+typedef struct lhnetsocket_s
+{
+       lhnetaddress_t address;
+       int inetsocket;
+       struct lhnetsocket_s *next, *prev;
+}
+lhnetsocket_t;
+
+void LHNET_Init(void);
+void LHNET_Shutdown(void);
+lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address);
+void LHNET_CloseSocket(lhnetsocket_t *lhnetsocket);
+lhnetaddress_t *LHNET_AddressFromSocket(lhnetsocket_t *sock);
+int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *address);
+int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentlength, const lhnetaddress_t *address);
+
+#endif
+
diff --git a/netconn.c b/netconn.c
new file mode 100755 (executable)
index 0000000..75677c4
--- /dev/null
+++ b/netconn.c
@@ -0,0 +1,1326 @@
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+Copyright (C) 2002 Mathieu Olivier
+Copyright (C) 2003 Forest Hale
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#include "quakedef.h"
+#include "lhnet.h"
+
+#define MASTER_PORT 27950
+
+cvar_t sv_public = {0, "sv_public", "0"};
+static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "180"};
+
+static cvar_t sv_masters [] =
+{
+       {CVAR_SAVE, "sv_master1", ""},
+       {CVAR_SAVE, "sv_master2", ""},
+       {CVAR_SAVE, "sv_master3", ""},
+       {CVAR_SAVE, "sv_master4", ""},
+       {0, "sv_masterextra1", "198.88.152.4"},
+       {0, "sv_masterextra2", "68.102.242.12"},
+       {0, NULL, NULL}
+};
+
+static double nextheartbeattime = 0;
+
+sizebuf_t net_message;
+
+cvar_t net_messagetimeout = {0, "net_messagetimeout","300"};
+cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED"};
+cvar_t developer_networking = {0, "developer_networking", "0"};
+
+/* statistic counters */
+static int packetsSent = 0;
+static int packetsReSent = 0;
+static int packetsReceived = 0;
+static int receivedDuplicateCount = 0;
+static int droppedDatagrams = 0;
+
+static int unreliableMessagesSent = 0;
+static int unreliableMessagesReceived = 0;
+static int reliableMessagesSent = 0;
+static int reliableMessagesReceived = 0;
+
+int hostCacheCount = 0;
+hostcache_t hostcache[HOSTCACHESIZE];
+
+static qbyte sendbuffer[NET_MAXMESSAGE];
+static qbyte readbuffer[NET_MAXMESSAGE];
+
+int cl_numsockets;
+lhnetsocket_t *cl_sockets[16];
+int sv_numsockets;
+lhnetsocket_t *sv_sockets[16];
+
+netconn_t *netconn_list = NULL;
+mempool_t *netconn_mempool = NULL;
+
+cvar_t cl_netport = {0, "cl_port", "0"};
+cvar_t cl_netaddress = {0, "cl_netaddress", "0.0.0.0"};
+cvar_t cl_netaddress_ipv6 = {0, "cl_netaddress_ipv6", "[0:0:0:0:0:0:0:0]:0"};
+
+cvar_t sv_netport = {0, "port", "26000"};
+cvar_t sv_netaddress = {0, "sv_netaddress", "0.0.0.0"};
+cvar_t sv_netaddress_ipv6 = {0, "sv_netaddress_ipv6", "[0:0:0:0:0:0:0:0]:26000"};
+
+int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
+{
+       int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
+       if (developer_networking.integer && length != 0)
+       {
+               char addressstring[128], addressstring2[128];
+               LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
+               if (length > 0)
+               {
+                       LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+                       Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
+                       Com_HexDumpToConsole(data, length);
+               }
+               else
+                       Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
+       }
+       return length;
+}
+
+int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
+{
+       int ret = LHNET_Write(mysocket, data, length, peeraddress);
+       if (developer_networking.integer && ret != 0)
+       {
+               char addressstring[128], addressstring2[128];
+               LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
+               LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+               Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
+               Com_HexDumpToConsole(data, length);
+       }
+       return ret;
+}
+
+int NetConn_SendReliableMessage(netconn_t *conn, sizebuf_t *data)
+{
+       unsigned int packetLen;
+       unsigned int dataLen;
+       unsigned int eom;
+       unsigned int *header;
+
+//#ifdef DEBUG
+       if (data->cursize == 0)
+               Sys_Error("Datagram_SendMessage: zero length message\n");
+
+       if (data->cursize > NET_MAXMESSAGE)
+               Sys_Error("Datagram_SendMessage: message too big %u\n", data->cursize);
+
+       if (conn->canSend == false)
+               Sys_Error("SendMessage: called with canSend == false\n");
+//#endif
+
+       memcpy(conn->sendMessage, data->data, data->cursize);
+       conn->sendMessageLength = data->cursize;
+
+       if (conn->sendMessageLength <= MAX_DATAGRAM)
+       {
+               dataLen = conn->sendMessageLength;
+               eom = NETFLAG_EOM;
+       }
+       else
+       {
+               dataLen = MAX_DATAGRAM;
+               eom = 0;
+       }
+
+       packetLen = NET_HEADERSIZE + dataLen;
+
+       header = (void *)sendbuffer;
+       header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
+       header[1] = BigLong(conn->sendSequence);
+       memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
+
+       conn->sendSequence++;
+       conn->canSend = false;
+
+       if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+               return -1;
+
+       conn->lastSendTime = realtime;
+       packetsSent++;
+       reliableMessagesSent++;
+       return 1;
+}
+
+static void NetConn_SendMessageNext(netconn_t *conn)
+{
+       unsigned int packetLen;
+       unsigned int dataLen;
+       unsigned int eom;
+       unsigned int *header;
+
+       if (conn->sendMessageLength && !conn->canSend && conn->sendNext)
+       {
+               if (conn->sendMessageLength <= MAX_DATAGRAM)
+               {
+                       dataLen = conn->sendMessageLength;
+                       eom = NETFLAG_EOM;
+               }
+               else
+               {
+                       dataLen = MAX_DATAGRAM;
+                       eom = 0;
+               }
+
+               packetLen = NET_HEADERSIZE + dataLen;
+
+               header = (void *)sendbuffer;
+               header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
+               header[1] = BigLong(conn->sendSequence);
+               memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
+
+               conn->sendSequence++;
+               conn->sendNext = false;
+
+               if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+                       return;
+
+               conn->lastSendTime = realtime;
+               packetsSent++;
+       }
+}
+
+static void NetConn_ReSendMessage(netconn_t *conn)
+{
+       unsigned int packetLen;
+       unsigned int dataLen;
+       unsigned int eom;
+       unsigned int *header;
+
+       if (conn->sendMessageLength && !conn->canSend && (realtime - conn->lastSendTime) > 1.0)
+       {
+               if (conn->sendMessageLength <= MAX_DATAGRAM)
+               {
+                       dataLen = conn->sendMessageLength;
+                       eom = NETFLAG_EOM;
+               }
+               else
+               {
+                       dataLen = MAX_DATAGRAM;
+                       eom = 0;
+               }
+
+               packetLen = NET_HEADERSIZE + dataLen;
+
+               header = (void *)sendbuffer;
+               header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
+               header[1] = BigLong(conn->sendSequence - 1);
+               memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
+
+               conn->sendNext = false;
+
+               if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+                       return;
+
+               conn->lastSendTime = realtime;
+               packetsReSent++;
+       }
+}
+
+qboolean NetConn_CanSendMessage(netconn_t *conn)
+{
+       return conn->canSend;
+}
+
+int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data)
+{
+       int packetLen;
+       int *header;
+
+#ifdef DEBUG
+       if (data->cursize == 0)
+               Sys_Error("Datagram_SendUnreliableMessage: zero length message\n");
+
+       if (data->cursize > MAX_DATAGRAM)
+               Sys_Error("Datagram_SendUnreliableMessage: message too big %u\n", data->cursize);
+#endif
+
+       packetLen = NET_HEADERSIZE + data->cursize;
+
+       header = (void *)sendbuffer;
+       header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
+       header[1] = BigLong(conn->unreliableSendSequence);
+       memcpy(sendbuffer + 8, data->data, data->cursize);
+
+       conn->unreliableSendSequence++;
+
+       if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+               return -1;
+
+       packetsSent++;
+       unreliableMessagesSent++;
+       return 1;
+}
+
+void NetConn_CloseClientPorts(void)
+{
+       for (;cl_numsockets > 0;cl_numsockets--)
+               if (cl_sockets[cl_numsockets - 1])
+                       LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
+}
+
+void NetConn_OpenClientPorts(void)
+{
+       int port;
+       lhnetaddress_t address;
+       NetConn_CloseClientPorts();
+       port = bound(0, cl_netport.integer, 65535);
+       if (cl_netport.integer != port)
+               Cvar_SetValueQuick(&cl_netport, port);
+       LHNETADDRESS_FromString(&address, "local", port);
+       cl_sockets[cl_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+       LHNETADDRESS_FromString(&address, cl_netaddress.string, port);
+       cl_sockets[cl_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+       LHNETADDRESS_FromString(&address, cl_netaddress_ipv6.string, port);
+       cl_sockets[cl_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+}
+
+void NetConn_CloseServerPorts(void)
+{
+       for (;sv_numsockets > 0;sv_numsockets--)
+               if (sv_sockets[sv_numsockets - 1])
+                       LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
+}
+
+void NetConn_OpenServerPorts(int opennetports)
+{
+       int port;
+       lhnetaddress_t address;
+       NetConn_CloseServerPorts();
+       port = bound(0, sv_netport.integer, 65535);
+       if (port == 0)
+               port = 26000;
+       if (sv_netport.integer != port)
+               Cvar_SetValueQuick(&sv_netport, port);
+       LHNETADDRESS_FromString(&address, "local", port);
+       sv_sockets[sv_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+       if (opennetports)
+       {
+               LHNETADDRESS_FromString(&address, sv_netaddress.string, port);
+               sv_sockets[sv_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+               LHNETADDRESS_FromString(&address, sv_netaddress_ipv6.string, port);
+               sv_sockets[sv_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+       }
+}
+
+lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
+{
+       int i, a = LHNETADDRESS_GetAddressType(address);
+       for (i = 0;i < cl_numsockets;i++)
+               if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
+                       return cl_sockets[i];
+       return NULL;
+}
+
+lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
+{
+       int i, a = LHNETADDRESS_GetAddressType(address);
+       for (i = 0;i < sv_numsockets;i++)
+               if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
+                       return sv_sockets[i];
+       return NULL;
+}
+
+netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
+{
+       netconn_t *conn;
+       conn = Mem_Alloc(netconn_mempool, sizeof(*conn));
+       conn->mysocket = mysocket;
+       conn->peeraddress = *peeraddress;
+       conn->canSend = true;
+       conn->connecttime = realtime;
+       conn->lastMessageTime = realtime;
+       LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
+       conn->next = netconn_list;
+       netconn_list = conn;
+       return conn;
+}
+
+void NetConn_Close(netconn_t *conn)
+{
+       netconn_t *c;
+       // remove connection from list
+       if (conn == netconn_list)
+               netconn_list = conn->next;
+       else
+       {
+               for (c = netconn_list;c;c = c->next)
+               {
+                       if (c->next == conn)
+                       {
+                               c->next = conn->next;
+                               break;
+                       }
+               }
+               // not found in list, we'll avoid crashing here...
+               if (!c)
+                       return;
+       }
+       // free connection
+       Mem_Free(conn);
+}
+
+static int clientport = -1;
+static int clientport2 = -1;
+static int hostport = -1;
+static void NetConn_UpdateServerStuff(void)
+{
+       if (clientport2 != cl_netport.integer)
+       {
+               clientport2 = cl_netport.integer;
+               if (cls.state == ca_connected)
+                       Con_Printf("Changing \"cl_port\" will not take effect until you reconnect.\n");
+       }
+       if (cls.state != ca_dedicated)
+       {
+               if (cls.state == ca_disconnected && clientport != cl_netport.integer)
+               {
+                       clientport = cl_netport.integer;
+                       NetConn_CloseClientPorts();
+               }
+               if (cl_numsockets == 0)
+                       NetConn_OpenClientPorts();
+       }
+
+       if (hostport != sv_netport.integer)
+       {
+               hostport = sv_netport.integer;
+               if (sv.active)
+                       Con_Printf("Changing \"port\" will not take effect until \"map\" command is executed.\n");
+       }
+}
+
+int NetConn_ReceivedMessage(netconn_t *conn, qbyte *data, int length)
+{
+       unsigned int count;
+       unsigned int flags;
+       unsigned int sequence;
+
+       if (length < 8)
+               return 0;
+
+       length = BigLong(((int *)data)[0]);
+       flags = length & ~NETFLAG_LENGTH_MASK;
+       length &= NETFLAG_LENGTH_MASK;
+       // control packets were already handled
+       if (!(flags & NETFLAG_CTL))
+       {
+               sequence = BigLong(((int *)data)[1]);
+               packetsReceived++;
+               data += 8;
+               length -= 8;
+               if (flags & NETFLAG_UNRELIABLE)
+               {
+                       if (sequence >= conn->unreliableReceiveSequence)
+                       {
+                               if (sequence > conn->unreliableReceiveSequence)
+                               {
+                                       count = sequence - conn->unreliableReceiveSequence;
+                                       droppedDatagrams += count;
+                                       Con_DPrintf("Dropped %u datagram(s)\n", count);
+                               }
+                               conn->unreliableReceiveSequence = sequence + 1;
+                               unreliableMessagesReceived++;
+                               SZ_Clear(&net_message);
+                               SZ_Write(&net_message, data, length);
+                               MSG_BeginReading();
+                               return 2;
+                       }
+                       else
+                               Con_DPrintf("Got a stale datagram\n");
+                       return 1;
+               }
+               else if (flags & NETFLAG_ACK)
+               {
+                       if (sequence == (conn->sendSequence - 1))
+                       {
+                               if (sequence == conn->ackSequence)
+                               {
+                                       conn->ackSequence++;
+                                       if (conn->ackSequence != conn->sendSequence)
+                                               Con_DPrintf("ack sequencing error\n");
+                                       conn->sendMessageLength -= MAX_DATAGRAM;
+                                       if (conn->sendMessageLength > 0)
+                                       {
+                                               memcpy(conn->sendMessage, conn->sendMessage+MAX_DATAGRAM, conn->sendMessageLength);
+                                               conn->sendNext = true;
+                                               NetConn_SendMessageNext(conn);
+                                       }
+                                       else
+                                       {
+                                               conn->sendMessageLength = 0;
+                                               conn->canSend = true;
+                                       }
+                               }
+                               else
+                                       Con_DPrintf("Duplicate ACK received\n");
+                       }
+                       else
+                               Con_DPrintf("Stale ACK received\n");
+                       return 1;
+               }
+               else if (flags & NETFLAG_DATA)
+               {
+                       unsigned int temppacket[2];
+                       temppacket[0] = BigLong(8 | NETFLAG_ACK);
+                       temppacket[1] = BigLong(sequence);
+                       NetConn_Write(conn->mysocket, (qbyte *)temppacket, 8, &conn->peeraddress);
+                       if (sequence == conn->receiveSequence)
+                       {
+                               conn->receiveSequence++;
+                               memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
+                               conn->receiveMessageLength += length;
+                               if (flags & NETFLAG_EOM)
+                               {
+                                       reliableMessagesReceived++;
+                                       SZ_Clear(&net_message);
+                                       SZ_Write(&net_message, conn->receiveMessage, conn->receiveMessageLength);
+                                       conn->receiveMessageLength = 0;
+                                       MSG_BeginReading();
+                                       return 2;
+                               }
+                       }
+                       else
+                               receivedDuplicateCount++;
+                       return 1;
+               }
+       }
+       return 0;
+}
+
+static struct
+{
+       double senttime;
+       lhnetaddress_t peeraddress;
+}
+pingcache[HOSTCACHESIZE];
+
+int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
+{
+       int ret, c, control;
+       lhnetaddress_t svaddress;
+       const char *s;
+       char *string, addressstring2[128], cname[128], ipstring[32];
+
+       if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
+       {
+               data += 4;
+               length -= 4;
+               string = (char *)data;
+               if (developer.integer)
+               {
+                       LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+                       Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
+                       Com_HexDumpToConsole(data, length);
+               }
+               if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
+               {
+                       int i, j, c, n, users, maxusers;
+                       char game[32], mod[32], map[32], name[128];
+                       double pingtime;
+                       hostcache_t temp;
+                       string += 13;
+                       // hostcache only uses text addresses
+                       LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
+                       // search the cache for this server
+                       for (n = 0; n < hostCacheCount; n++)
+                               if (!strcmp(cname, hostcache[n].cname))
+                                       break;
+                       // add it or update it
+                       if (n == hostCacheCount)
+                       {
+                               // if cache is full replace highest ping server (the list is
+                               // kept sorted so this is always the last, and if this server
+                               // is good it will be sorted into an early part of the list)
+                               if (hostCacheCount >= HOSTCACHESIZE)
+                                       n = hostCacheCount - 1;
+                               else
+                                       hostCacheCount++;
+                       }
+                       c = -1;
+                       if ((s = SearchInfostring(string, "gamename"     )) != NULL) strncpy(game, s, sizeof(game) - 1);
+                       if ((s = SearchInfostring(string, "modname"      )) != NULL) strncpy(mod , s, sizeof(mod ) - 1);
+                       if ((s = SearchInfostring(string, "mapname"      )) != NULL) strncpy(map , s, sizeof(map ) - 1);
+                       if ((s = SearchInfostring(string, "hostname"     )) != NULL) strncpy(name, s, sizeof(name) - 1);
+                       if ((s = SearchInfostring(string, "protocol"     )) != NULL) c = atoi(s);
+                       if ((s = SearchInfostring(string, "clients"      )) != NULL) users = atoi(s);
+                       if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) maxusers = atoi(s);
+                       pingtime = 9999;
+                       for (i = 0;i < HOSTCACHESIZE;i++)
+                               if (!LHNETADDRESS_Compare(peeraddress, &pingcache[i].peeraddress))
+                                       pingtime = (int)(realtime - pingcache[i].senttime);
+                       pingtime = bound(0, pingtime, 9999);
+                       memset(&hostcache[n], 0, sizeof(hostcache[n]));
+                       // store the data the engine cares about (address and ping)
+                       strcpy(hostcache[n].cname, cname);
+                       hostcache[n].ping = pingtime;
+                       // build description strings for the things users care about
+                       snprintf(hostcache[n].line1, sizeof(hostcache[n].line1), "%5d%c%3u/%3u %-65.65s", (int)pingtime, c != NET_PROTOCOL_VERSION ? '*' : ' ', users, maxusers, name);
+                       snprintf(hostcache[n].line2, sizeof(hostcache[n].line2), "%-21.21s %-19.19s %-17.17s %-20.20s", cname, game, mod, map);
+                       // if ping is especially high, display it as such
+                       if (pingtime >= 300)
+                       {
+                               // orange numbers (lower block)
+                               for (i = 0;i < 5;i++)
+                                       if (hostcache[n].line1[i] != ' ')
+                                               hostcache[n].line1[i] += 128;
+                       }
+                       else if (pingtime >= 200)
+                       {
+                               // yellow numbers (in upper block)
+                               for (i = 0;i < 5;i++)
+                                       if (hostcache[n].line1[i] != ' ')
+                                               hostcache[n].line1[i] -= 30;
+                       }
+                       // if not in the slist menu we should print the server to console
+                       if (m_state != m_slist)
+                               Con_Printf("%s\n%s\n", hostcache[n].line1, hostcache[n].line2);
+                       // and finally, re-sort the list
+                       for (i = 0;i < hostCacheCount;i++)
+                       {
+                               for (j = i + 1;j < hostCacheCount;j++)
+                               {
+                                       //if (strcmp(hostcache[j].name, hostcache[i].name) < 0)
+                                       if (hostcache[i].ping > hostcache[j].ping)
+                                       {
+                                               memcpy(&temp, &hostcache[j], sizeof(hostcache_t));
+                                               memcpy(&hostcache[j], &hostcache[i], sizeof(hostcache_t));
+                                               memcpy(&hostcache[i], &temp, sizeof(hostcache_t));
+                                       }
+                               }
+                       }
+                       return true;
+               }
+               if (!strncmp(string, "getserversResponse\\", 19) && hostCacheCount < HOSTCACHESIZE)
+               {
+                       int i, best;
+                       double besttime;
+                       // Extract the IP addresses
+                       data += 18;
+                       length -= 18;
+                       while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
+                       {
+                               sprintf(ipstring, "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], (data[5] << 8) | data[6]);
+                               if (developer.integer)
+                                       Con_Printf("Requesting info from server %s\n", ipstring);
+                               LHNETADDRESS_FromString(&svaddress, ipstring, 0);
+                               NetConn_Write(mysocket, "\377\377\377\377getinfo", 11, &svaddress);
+                               // replace oldest or matching entry in ping cache
+                               // we scan this later when getting a reply to see how long it took
+                               besttime = realtime;
+                               best = 0;
+                               for (i = 0;i < HOSTCACHESIZE;i++)
+                               {
+                                       if (!LHNETADDRESS_Compare(&svaddress, &pingcache[i].peeraddress))
+                                       {
+                                               best = i;
+                                               break;
+                                       }
+                                       if (besttime > pingcache[i].senttime)
+                                       {
+                                               besttime = pingcache[i].senttime;
+                                               best = i;
+                                               // if ping cache isn't full yet we can skip out early
+                                               if (!besttime)
+                                                       break;
+                                       }
+                               }
+                               pingcache[best].peeraddress = svaddress;
+                               pingcache[best].senttime = realtime;
+                               // move on to next address in packet
+                               data += 7;
+                               length -= 7;
+                       }
+                       return true;
+               }
+               /*
+               if (!strncmp(string, "ping", 4))
+               {
+                       if (developer.integer)
+                               Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
+                       NetConn_Write(mysocket, "\377\377\377\377ack", 7, peeraddress);
+                       return true;
+               }
+               if (!strncmp(string, "ack", 3))
+                       return true;
+               */
+               // we may not have liked the packet, but it was a command packet, so
+               // we're done processing this packet now
+               return true;
+       }
+       if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
+       {
+               c = data[4];
+               data += 5;
+               length -= 5;
+               LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+               switch (c)
+               {
+               case CCREP_ACCEPT:
+                       if (developer.integer)
+                               Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
+                       if (cls.connect_trying)
+                       {
+                               Con_Printf("Connection accepted to %s\n", addressstring2);
+                               key_dest = key_game;
+                               m_state = m_none;
+                               cls.netcon = NetConn_Open(mysocket, peeraddress);
+                               cls.connect_trying = false;
+                               cls.demonum = -1;                       // not in the demo loop now
+                               cls.state = ca_connected;
+                               cls.signon = 0;                         // need all the signon messages before playing
+                               CL_ClearState();
+                               Host_Reconnect_f();
+                       }
+                       break;
+               case CCREP_REJECT:
+                       if (developer.integer)
+                               Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
+                       Con_Printf("%s\n", data);
+                       strncpy(m_return_reason, data, sizeof(m_return_reason) - 1);
+                       break;
+#if 0
+               case CCREP_SERVER_INFO:
+                       if (developer.integer)
+                               Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
+                       if (cls.state != ca_dedicated)
+                       {
+                               // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
+                               // string we just ignore it and keep the real address
+                               MSG_ReadString();
+                               // hostcache only uses text addresses
+                               cname = UDP_AddrToString(readaddr);
+                               // search the cache for this server
+                               for (n = 0; n < hostCacheCount; n++)
+                                       if (!strcmp(cname, hostcache[n].cname))
+                                               break;
+                               // add it
+                               if (n == hostCacheCount && hostCacheCount < HOSTCACHESIZE)
+                               {
+                                       hostCacheCount++;
+                                       memset(&hostcache[n], 0, sizeof(hostcache[n]));
+                                       strcpy(hostcache[n].name, MSG_ReadString());
+                                       strcpy(hostcache[n].map, MSG_ReadString());
+                                       hostcache[n].users = MSG_ReadByte();
+                                       hostcache[n].maxusers = MSG_ReadByte();
+                                       c = MSG_ReadByte();
+                                       if (c != NET_PROTOCOL_VERSION)
+                                       {
+                                               strncpy(hostcache[n].cname, hostcache[n].name, sizeof(hostcache[n].cname) - 1);
+                                               hostcache[n].cname[sizeof(hostcache[n].cname) - 1] = 0;
+                                               strcpy(hostcache[n].name, "*");
+                                               strncat(hostcache[n].name, hostcache[n].cname, sizeof(hostcache[n].name) - 1);
+                                               hostcache[n].name[sizeof(hostcache[n].name) - 1] = 0;
+                                       }
+                                       strcpy(hostcache[n].cname, cname);
+                               }
+                       }
+                       break;
+               case CCREP_PLAYER_INFO:
+                       // we got a CCREP_PLAYER_INFO??
+                       //if (developer.integer)
+                               Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
+                       break;
+               case CCREP_RULE_INFO:
+                       // we got a CCREP_RULE_INFO??
+                       //if (developer.integer)
+                               Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
+                       break;
+#endif
+               default:
+                       break;
+               }
+               // we may not have liked the packet, but it was a valid control
+               // packet, so we're done processing this packet now
+               return true;
+       }
+       ret = 0;
+       if (length >= (int)NET_HEADERSIZE && cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress) && (ret = NetConn_ReceivedMessage(cls.netcon, data, length)) == 2)
+               CL_ParseServerMessage();
+       return ret;
+}
+
+void NetConn_ClientFrame(void)
+{
+       int i, length;
+       lhnetaddress_t peeraddress;
+       netconn_t *conn;
+       NetConn_UpdateServerStuff();
+       if (cls.connect_trying && cls.connect_nextsendtime < realtime)
+       {
+               if (cls.connect_remainingtries == 0)
+               {
+                       cls.connect_trying = false;
+                       Host_Error("Connect failed\n");
+                       return;
+               }
+               if (cls.connect_nextsendtime)
+                       Con_Printf("Still trying...\n");
+               else
+                       Con_Printf("Trying...\n");
+               cls.connect_nextsendtime = realtime + 1;
+               cls.connect_remainingtries--;
+               SZ_Clear(&net_message);
+               // save space for the header, filled in later
+               MSG_WriteLong(&net_message, 0);
+               MSG_WriteByte(&net_message, CCREQ_CONNECT);
+               MSG_WriteString(&net_message, "QUAKE");
+               MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+               *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+               NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
+               SZ_Clear(&net_message);
+       }
+       for (i = 0;i < cl_numsockets;i++)
+               while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
+                       NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
+       if (cls.netcon && realtime > cls.netcon->lastMessageTime + net_messagetimeout.value)
+       {
+               Con_Printf("Connection timed out\n");
+               CL_Disconnect();
+       }
+       for (conn = netconn_list;conn;conn = conn->next)
+               NetConn_ReSendMessage(conn);
+}
+
+extern void SV_ConnectClient(int clientnum, netconn_t *netconnection);
+int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
+{
+       int i, c, n, ret, clientnum, control, responselength;
+       client_t *client;
+       netconn_t *conn;
+       char *string, response[512], addressstring2[128];
+
+       if (sv.active)
+       {
+               if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
+               {
+                       data += 4;
+                       length -= 4;
+                       string = (char *)data;
+
+                       if (developer.integer)
+                       {
+                               LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+                               Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
+                               Com_HexDumpToConsole(data, length);
+                       }
+
+                       if (length >= 7 && !memcmp(string, "getinfo", 7))
+                       {
+                               const char *challenge = NULL;
+                               // If there was a challenge in the getinfo message
+                               if (length > 8 && string[7] == ' ')
+                                       challenge = string + 8;
+                               for (i = 0, n = 0;i < svs.maxclients;i++)
+                                       if (svs.clients[i].active)
+                                               n++;
+                               responselength = snprintf(response, sizeof(response), "\377\377\377\377infoResponse\x0A"
+                                                       "\\gamename\\%s\\modname\\%s\\sv_maxclients\\%d"
+                                                       "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d%s%s",
+                                                       gamename, com_modname, svs.maxclients, n,
+                                                       sv.name, hostname.string, NET_PROTOCOL_VERSION, challenge ? "\\challenge\\" : "", challenge ? challenge : "");
+                               // does it fit in the buffer?
+                               if (responselength < (int)sizeof(response))
+                               {
+                                       if (developer.integer)
+                                               Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
+                                       NetConn_Write(mysocket, response, responselength, peeraddress);
+                               }
+                               return true;
+                       }
+                       /*
+                       if (!strncmp(string, "ping", 4))
+                       {
+                               if (developer.integer)
+                                       Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
+                               NetConn_Write(mysocket, "\377\377\377\377ack", 7, peeraddress);
+                               return true;
+                       }
+                       if (!strncmp(string, "ack", 3))
+                               return true;
+                       */
+                       // we may not have liked the packet, but it was a command packet, so
+                       // we're done processing this packet now
+                       return true;
+               }
+               if (length >= 5)
+               {
+                       control = BigLong(*((int *)data));
+                       if ((control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
+                       {
+                               c = data[4];
+                               data += 5;
+                               length -= 5;
+                               LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+#if 1
+                               switch (c)
+                               {
+                               case CCREQ_CONNECT:
+                                       //if (developer.integer)
+                                               Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
+                                       if (length >= (int)strlen("QUAKE") + 1 + 1)
+                                       {
+                                               if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
+                                               {
+                                                       //if (developer.integer)
+                                                               Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
+#if 0
+                                                       NetConn_Write(mysocket, "\377\377\377\377reject Incompatible version.", 32, peeraddress);
+#else
+                                                       SZ_Clear(&net_message);
+                                                       // save space for the header, filled in later
+                                                       MSG_WriteLong(&net_message, 0);
+                                                       MSG_WriteByte(&net_message, CCREP_REJECT);
+                                                       MSG_WriteString(&net_message, "Incompatible version.\n");
+                                                       *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                                                       NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+                                                       SZ_Clear(&net_message);
+#endif
+                                               }
+                                               else
+                                               {
+                                                       // see if this client is already connected
+                                                       for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+                                                               if (client->active && (ret = LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress)) == 0)//>= 0)
+                                                                       break;
+                                                       if (clientnum < svs.maxclients)
+                                                       {
+                                                               // is this a duplicate connection request?
+                                                               if (ret == 0 && realtime - client->netconnection->connecttime < 2.0)
+                                                               {
+                                                                       //if (developer.integer)
+                                                                               Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
+                                                                       // yes, so send a duplicate reply
+#if 0
+                                                                       NetConn_Write(mysocket, "\377\377\377\377accept", 10, peeraddress);
+#else
+                                                                       SZ_Clear(&net_message);
+                                                                       // save space for the header, filled in later
+                                                                       MSG_WriteLong(&net_message, 0);
+                                                                       MSG_WriteByte(&net_message, CCREP_ACCEPT);
+                                                                       MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
+                                                                       *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                                                                       NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+                                                                       SZ_Clear(&net_message);
+#endif
+                                                               }
+                                                               else
+                                                               {
+                                                                       //if (developer.integer)
+                                                                               Con_Printf("Datagram_ParseConnectionless: removing crashed/disconnected client #%i \"%s\" (address %s).\n", clientnum, client->name, client->netconnection->address);
+                                                                       // it's somebody coming back from a
+                                                                       // crash/disconnect so kill old connection
+                                                                       // asap and let them retry to get in
+                                                                       client->deadsocket = true;
+                                                               }
+                                                       }
+                                                       else
+                                                       {
+                                                               for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+                                                                       if (!client->active)
+                                                                               break;
+                                                               if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
+                                                               {
+                                                                       // connect to the client
+                                                                       // everything is allocated, just fill in the details
+                                                                       strcpy(conn->address, addressstring2);
+                                                                       //if (developer.integer)
+                                                                               Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
+#if 0
+                                                                       NetConn_Write(mysocket, "\377\377\377\377accept", 10, peeraddress);
+#else
+                                                                       // send back the info about the server connection
+                                                                       SZ_Clear(&net_message);
+                                                                       // save space for the header, filled in later
+                                                                       MSG_WriteLong(&net_message, 0);
+                                                                       MSG_WriteByte(&net_message, CCREP_ACCEPT);
+                                                                       MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
+                                                                       *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                                                                       NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+                                                                       SZ_Clear(&net_message);
+#endif
+                                                                       // now set up the client struct
+                                                                       SV_ConnectClient(clientnum, conn);
+                                                                       NetConn_Heartbeat(1);
+                                                               }
+                                                               else
+                                                               {
+                                                                       //if (developer.integer)
+                                                                               Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
+                                                                       // no room; try to let player know
+#if 0
+                                                                       NetConn_Write(mysocket, "\377\377\377\377reject Server is full.", 26, peeraddress);
+#else
+                                                                       SZ_Clear(&net_message);
+                                                                       // save space for the header, filled in later
+                                                                       MSG_WriteLong(&net_message, 0);
+                                                                       MSG_WriteByte(&net_message, CCREP_REJECT);
+                                                                       MSG_WriteString(&net_message, "Server is full.\n");
+                                                                       *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                                                                       NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+                                                                       SZ_Clear(&net_message);
+#endif
+                                                               }
+                                                       }
+                                               }
+                                       }
+                                       break;
+#if 0
+                               case CCREQ_SERVER_INFO:
+                                       if (developer.integer)
+                                               Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
+                                       if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
+                                       {
+                                               if (developer.integer)
+                                                       Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
+                                               SZ_Clear(&net_message);
+                                               // save space for the header, filled in later
+                                               MSG_WriteLong(&net_message, 0);
+                                               MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
+                                               UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
+                                               MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
+                                               MSG_WriteString(&net_message, hostname.string);
+                                               MSG_WriteString(&net_message, sv.name);
+                                               MSG_WriteByte(&net_message, net_activeconnections);
+                                               MSG_WriteByte(&net_message, svs.maxclients);
+                                               MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+                                               *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                                               NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+                                               SZ_Clear(&net_message);
+                                       }
+                                       break;
+                               case CCREQ_PLAYER_INFO:
+                                       if (developer.integer)
+                                               Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
+                                       if (sv.active)
+                                       {
+                                               int playerNumber, activeNumber, clientNumber;
+                                               client_t *client;
+
+                                               playerNumber = MSG_ReadByte();
+                                               activeNumber = -1;
+                                               for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
+                                                       if (client->active && ++activeNumber == playerNumber)
+                                                               break;
+                                               if (clientNumber != svs.maxclients)
+                                               {
+                                                       SZ_Clear(&net_message);
+                                                       // save space for the header, filled in later
+                                                       MSG_WriteLong(&net_message, 0);
+                                                       MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
+                                                       MSG_WriteByte(&net_message, playerNumber);
+                                                       MSG_WriteString(&net_message, client->name);
+                                                       MSG_WriteLong(&net_message, client->colors);
+                                                       MSG_WriteLong(&net_message, (int)client->edict->v->frags);
+                                                       MSG_WriteLong(&net_message, (int)(realtime - client->netconnection->connecttime));
+                                                       MSG_WriteString(&net_message, client->netconnection->address);
+                                                       *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                                                       NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+                                                       SZ_Clear(&net_message);
+                                               }
+                                       }
+                                       break;
+                               case CCREQ_RULE_INFO:
+                                       if (developer.integer)
+                                               Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
+                                       if (sv.active)
+                                       {
+                                               char *prevCvarName;
+                                               cvar_t *var;
+
+                                               // find the search start location
+                                               prevCvarName = MSG_ReadString();
+                                               var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
+
+                                               // send the response
+                                               SZ_Clear(&net_message);
+                                               // save space for the header, filled in later
+                                               MSG_WriteLong(&net_message, 0);
+                                               MSG_WriteByte(&net_message, CCREP_RULE_INFO);
+                                               if (var)
+                                               {
+                                                       MSG_WriteString(&net_message, var->name);
+                                                       MSG_WriteString(&net_message, var->string);
+                                               }
+                                               *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                                               NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+                                               SZ_Clear(&net_message);
+                                       }
+                                       break;
+#endif
+                               default:
+                                       break;
+                               }
+#endif
+                               // we may not have liked the packet, but it was a valid control
+                               // packet, so we're done processing this packet now
+                               return true;
+                       }
+               }
+               for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+               {
+                       if (host_client->active && host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
+                       {
+                               sv_player = host_client->edict;
+                               if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length)) == 2)
+                                       SV_ReadClientMessage();
+                               return ret;
+                       }
+               }
+       }
+       return 0;
+}
+
+void NetConn_ServerFrame(void)
+{
+       int i, length;
+       lhnetaddress_t peeraddress;
+       netconn_t *conn;
+       NetConn_UpdateServerStuff();
+       for (i = 0;i < sv_numsockets;i++)
+               while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
+                       NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
+       for (i = 0, host_client = svs.clients;i < svs.maxclients;i++)
+       {
+               if (host_client->active && realtime > host_client->netconnection->lastMessageTime + net_messagetimeout.value)
+               {
+                       Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
+                       sv_player = host_client->edict;
+                       SV_DropClient(false);
+               }
+       }
+       for (conn = netconn_list;conn;conn = conn->next)
+               NetConn_ReSendMessage(conn);
+}
+
+void NetConn_QueryMasters(void)
+{
+       int i;
+       int masternum;
+       int requestlen;
+       lhnetaddress_t masteraddress;
+       char request[256];
+
+       if (hostCacheCount >= HOSTCACHESIZE)
+               return;
+
+       for (i = 0;i < cl_numsockets;i++)
+       {
+               if (cl_sockets[i])
+               {
+#if 0
+                       // search LAN
+#if 1
+                       UDP_Broadcast(UDP_controlSock, "\377\377\377\377getinfo", 11);
+#else
+                       SZ_Clear(&net_message);
+                       // save space for the header, filled in later
+                       MSG_WriteLong(&net_message, 0);
+                       MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
+                       MSG_WriteString(&net_message, "QUAKE");
+                       MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+                       *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+                       UDP_Broadcast(UDP_controlSock, net_message.data, net_message.cursize);
+                       SZ_Clear(&net_message);
+#endif
+#endif
+
+                       // build the getservers
+                       requestlen = snprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
+
+                       // search internet
+                       for (masternum = 0;sv_masters[masternum].name;masternum++)
+                               if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
+                                       NetConn_Write(cl_sockets[i], request, requestlen, &masteraddress);
+               }
+       }
+}
+
+void NetConn_Heartbeat(int priority)
+{
+       lhnetaddress_t masteraddress;
+       int masternum;
+       char *request = "\377\377\377\377heartbeat DarkPlaces\x0A";
+       int requestlen = strlen(request);
+       lhnetsocket_t *mysocket;
+
+       // if it's a state change (client connected), limit next heartbeat to no
+       // more than 30 sec in the future
+       if (priority == 1 && nextheartbeattime > realtime + 30.0)
+               nextheartbeattime = realtime + 30.0;
+
+       // limit heartbeatperiod to 30 to 270 second range,
+       // lower limit is to avoid abusing master servers with excess traffic,
+       // upper limit is to avoid timing out on the master server (which uses
+       // 300 sec timeout)
+       if (sv_heartbeatperiod.value < 30)
+               Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
+       if (sv_heartbeatperiod.value > 270)
+               Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
+
+       // make advertising optional and don't advertise singleplayer games, and
+       // only send a heartbeat as often as the admin wants
+       if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
+       {
+               nextheartbeattime = realtime + sv_heartbeatperiod.value;
+               for (masternum = 0;sv_masters[masternum].name;masternum++)
+                       if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
+                               NetConn_Write(mysocket, request, requestlen, &masteraddress);
+       }
+}
+
+int NetConn_SendToAll(sizebuf_t *data, double blocktime)
+{
+       int i, count = 0;
+       qbyte state[MAX_SCOREBOARD];
+
+       for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+               state[i] = 0;
+
+       // simultaneously wait for the first CanSendMessage and send the message,
+       // then wait for a second CanSendMessage (verifying it was received)
+       blocktime += Sys_DoubleTime();
+       do
+       {
+               count = 0;
+               NetConn_ClientFrame();
+               NetConn_ServerFrame();
+               for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+               {
+                       if (host_client->active && state[i] < 2)
+                       {
+                               count++;
+                               // need to send to this one
+                               if (NetConn_CanSendMessage(host_client->netconnection))
+                               {
+                                       if (state[i] == 0 && NetConn_SendReliableMessage(host_client->netconnection, data) == -1)
+                                               state[i] = 2; // connection lost
+                                       state[i]++;
+                               }
+                       }
+               }
+       }
+       while (count && Sys_DoubleTime() < blocktime);
+       return count;
+}
+
+static void MaxPlayers_f(void)
+{
+       int n;
+
+       if (Cmd_Argc() != 2)
+       {
+               Con_Printf("\"maxplayers\" is \"%u\"\n", svs.maxclients);
+               return;
+       }
+
+       if (sv.active)
+       {
+               Con_Printf("maxplayers can not be changed while a server is running.\n");
+               return;
+       }
+
+       n = atoi(Cmd_Argv(1));
+       n = bound(1, n, MAX_SCOREBOARD);
+       if (svs.maxclients != n)
+               Con_Printf("\"maxplayers\" set to \"%u\"\n", n);
+
+       SV_SetMaxClients(n);
+}
+
+static void Net_Heartbeat_f(void)
+{
+       NetConn_Heartbeat(2);
+}
+
+void PrintStats(netconn_t *conn)
+{
+       Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, conn->canSend, conn->sendSequence, conn->receiveSequence);
+}
+
+void Net_Stats_f(void)
+{
+       netconn_t *conn;
+       Con_Printf("unreliable messages sent   = %i\n", unreliableMessagesSent);
+       Con_Printf("unreliable messages recv   = %i\n", unreliableMessagesReceived);
+       Con_Printf("reliable messages sent     = %i\n", reliableMessagesSent);
+       Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
+       Con_Printf("packetsSent                = %i\n", packetsSent);
+       Con_Printf("packetsReSent              = %i\n", packetsReSent);
+       Con_Printf("packetsReceived            = %i\n", packetsReceived);
+       Con_Printf("receivedDuplicateCount     = %i\n", receivedDuplicateCount);
+       Con_Printf("droppedDatagrams           = %i\n", droppedDatagrams);
+       Con_Printf("connections                =\n");
+       for (conn = netconn_list;conn;conn = conn->next)
+               PrintStats(conn);
+}
+
+void Net_Slist_f(void)
+{
+       hostCacheCount = 0;
+       memset(&pingcache, 0, sizeof(pingcache));
+       if (m_state != m_slist)
+               Con_Printf("Sending requests to master servers\n");
+       NetConn_QueryMasters();
+       if (m_state != m_slist)
+               Con_Printf("Listening for replies...\n");
+}
+
+void NetConn_Init(void)
+{
+       int masternum;
+       netconn_mempool = Mem_AllocPool("Networking");
+       Cmd_AddCommand("net_stats", Net_Stats_f);
+       Cmd_AddCommand("net_slist", Net_Slist_f);
+       Cmd_AddCommand("maxplayers", MaxPlayers_f);
+       Cmd_AddCommand("heartbeat", Net_Heartbeat_f);
+       Cvar_RegisterVariable(&net_messagetimeout);
+       Cvar_RegisterVariable(&hostname);
+       Cvar_RegisterVariable(&developer_networking);
+       Cvar_RegisterVariable(&cl_netport);
+       Cvar_RegisterVariable(&cl_netaddress);
+       Cvar_RegisterVariable(&cl_netaddress_ipv6);
+       Cvar_RegisterVariable(&sv_netport);
+       Cvar_RegisterVariable(&sv_netaddress);
+       Cvar_RegisterVariable(&sv_netaddress_ipv6);
+       Cvar_RegisterVariable(&sv_public);
+       Cvar_RegisterVariable(&sv_heartbeatperiod);
+       for (masternum = 0;sv_masters[masternum].name;masternum++)
+               Cvar_RegisterVariable(&sv_masters[masternum]);
+       cl_numsockets = 0;
+       sv_numsockets = 0;
+       memset(&pingcache, 0, sizeof(pingcache));
+       SZ_Alloc(&net_message, NET_MAXMESSAGE, "net_message");
+       LHNET_Init();
+}
+
+void NetConn_Shutdown(void)
+{
+       NetConn_CloseClientPorts();
+       NetConn_CloseServerPorts();
+       LHNET_Shutdown();
+}
+
diff --git a/netconn.h b/netconn.h
new file mode 100755 (executable)
index 0000000..26a4ce8
--- /dev/null
+++ b/netconn.h
@@ -0,0 +1,221 @@
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+Copyright (C) 2003 Forest Hale
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#ifndef NET_H
+#define NET_H
+
+#include "lhnet.h"
+
+#define NET_NAMELEN                    128
+
+#define NET_MAXMESSAGE         65536
+#define NET_HEADERSIZE         (2 * sizeof(unsigned int))
+#define NET_DATAGRAMSIZE       (MAX_DATAGRAM + NET_HEADERSIZE)
+
+// NetHeader flags
+#define NETFLAG_LENGTH_MASK    0x0000ffff
+#define NETFLAG_DATA           0x00010000
+#define NETFLAG_ACK                    0x00020000
+#define NETFLAG_NAK                    0x00040000
+#define NETFLAG_EOM                    0x00080000
+#define NETFLAG_UNRELIABLE     0x00100000
+#define NETFLAG_CTL                    0x80000000
+
+
+#define NET_PROTOCOL_VERSION   3
+
+// This is the network info/connection protocol.  It is used to find Quake
+// servers, get info about them, and connect to them.  Once connected, the
+// Quake game protocol (documented elsewhere) is used.
+//
+//
+// General notes:
+//     game_name is currently always "QUAKE", but is there so this same protocol
+//             can be used for future games as well; can you say Quake2?
+//
+// CCREQ_CONNECT
+//             string  game_name                               "QUAKE"
+//             byte    net_protocol_version    NET_PROTOCOL_VERSION
+//
+// CCREQ_SERVER_INFO
+//             string  game_name                               "QUAKE"
+//             byte    net_protocol_version    NET_PROTOCOL_VERSION
+//
+// CCREQ_PLAYER_INFO
+//             byte    player_number
+//
+// CCREQ_RULE_INFO
+//             string  rule
+//
+//
+//
+// CCREP_ACCEPT
+//             long    port
+//
+// CCREP_REJECT
+//             string  reason
+//
+// CCREP_SERVER_INFO
+//             string  server_address
+//             string  host_name
+//             string  level_name
+//             byte    current_players
+//             byte    max_players
+//             byte    protocol_version        NET_PROTOCOL_VERSION
+//
+// CCREP_PLAYER_INFO
+//             byte    player_number
+//             string  name
+//             long    colors
+//             long    frags
+//             long    connect_time
+//             string  address
+//
+// CCREP_RULE_INFO
+//             string  rule
+//             string  value
+
+//     note:
+//             There are two address forms used above.  The short form is just a
+//             port number.  The address that goes along with the port is defined as
+//             "whatever address you receive this reponse from".  This lets us use
+//             the host OS to solve the problem of multiple host addresses (possibly
+//             with no routing between them); the host will use the right address
+//             when we reply to the inbound connection request.  The long from is
+//             a full address and port in a string.  It is used for returning the
+//             address of a server that is not running locally.
+
+#define CCREQ_CONNECT          0x01
+#define CCREQ_SERVER_INFO      0x02
+#define CCREQ_PLAYER_INFO      0x03
+#define CCREQ_RULE_INFO                0x04
+
+#define CCREP_ACCEPT           0x81
+#define CCREP_REJECT           0x82
+#define CCREP_SERVER_INFO      0x83
+#define CCREP_PLAYER_INFO      0x84
+#define CCREP_RULE_INFO                0x85
+
+typedef struct netconn_s
+{
+       struct netconn_s *next;
+
+       lhnetsocket_t *mysocket;
+       lhnetaddress_t peeraddress;
+
+       // this is mostly identical to qsocket_t from quake
+       double connecttime;
+       double lastMessageTime;
+       double lastSendTime;
+
+       qboolean canSend;
+       qboolean sendNext;
+
+       unsigned int ackSequence;
+       unsigned int sendSequence;
+       unsigned int unreliableSendSequence;
+       int sendMessageLength;
+       qbyte sendMessage[NET_MAXMESSAGE];
+
+       unsigned int receiveSequence;
+       unsigned int unreliableReceiveSequence;
+       int receiveMessageLength;
+       qbyte receiveMessage[NET_MAXMESSAGE];
+
+       char address[NET_NAMELEN];
+} netconn_t;
+
+extern netconn_t *netconn_list;
+extern mempool_t *netconn_mempool;
+
+extern cvar_t hostname;
+extern cvar_t developer_networking;
+extern char playername[];
+extern int playercolor;
+
+#define HOSTCACHESIZE  128
+
+typedef struct
+{
+       // ping time for sorting servers
+       double ping;
+       // address for connecting
+       char cname[128];
+       // description (seen by user)
+       char line1[128];
+       char line2[128];
+} hostcache_t;
+
+extern int hostCacheCount;
+extern hostcache_t hostcache[HOSTCACHESIZE];
+
+#if !defined(_WIN32 ) && !defined (__linux__) && !defined (__sun__)
+#ifndef htonl
+extern unsigned long htonl (unsigned long hostlong);
+#endif
+#ifndef htons
+extern unsigned short htons (unsigned short hostshort);
+#endif
+#ifndef ntohl
+extern unsigned long ntohl (unsigned long netlong);
+#endif
+#ifndef ntohs
+extern unsigned short ntohs (unsigned short netshort);
+#endif
+#endif
+
+//============================================================================
+//
+// public network functions
+//
+//============================================================================
+
+extern sizebuf_t net_message;
+
+int NetConn_SendReliableMessage(netconn_t *conn, sizebuf_t *data);
+//void NetConn_SendMessageNext(netconn_t *conn);
+//void NetConn_ReSendMessage(netconn_t *conn);
+qboolean NetConn_CanSendMessage(netconn_t *conn);
+int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data);
+void NetConn_CloseClientPorts(void);
+void NetConn_OpenClientPorts(void);
+void NetConn_CloseServerPorts(void);
+void NetConn_OpenServerPorts(int opennetports);
+lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address);
+lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address);
+void NetConn_Init(void);
+void NetConn_Shutdown(void);
+netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress);
+void NetConn_Close(netconn_t *conn);
+void NetConn_Listen(qboolean state);
+//int NetConn_ReceivedMessage(netconn_t *conn, qbyte *data, int length);
+//int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress);
+//int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress);
+void NetConn_ClientFrame(void);
+void NetConn_ServerFrame(void);
+void NetConn_QueryMasters(void);
+void NetConn_Heartbeat(int priority);
+int NetConn_SendToAll(sizebuf_t *data, double blocktime);
+void Net_Stats_f(void);
+void Net_Slist_f(void);
+
+#endif
+