2 // Written by Forest Hale 2003-06-15 and placed into public domain.
6 #pragma comment(lib, "ws2_32.lib")
9 // Windows XP or higher is required for getaddrinfo, but the inclusion of wspiapi provides fallbacks for older versions
10 # define _WIN32_WINNT 0x0501
12 # include <winsock2.h>
13 # include <ws2tcpip.h>
19 #ifndef STANDALONETEST
29 #include <sys/types.h>
30 #include <sys/socket.h>
31 #include <sys/ioctl.h>
34 #include <netinet/in.h>
35 #include <arpa/inet.h>
42 #include <proto/socket.h>
45 // for Z_Malloc/Z_Free in quake
46 #ifndef STANDALONETEST
51 #define Con_Print printf
52 #define Con_Printf printf
53 #define Z_Malloc malloc
60 #define EWOULDBLOCK WSAEWOULDBLOCK
61 #define ECONNREFUSED WSAECONNREFUSED
63 #define SOCKETERRNO WSAGetLastError()
65 #define IOC_VENDOR 0x18000000
66 #define _WSAIOW(x,y) (IOC_IN|(x)|(y))
67 #define SIO_UDP_CONNRESET _WSAIOW(IOC_VENDOR,12)
70 #elif defined(__MORPHOS__)
71 #define ioctlsocket IoctlSocket
72 #define closesocket CloseSocket
73 #define SOCKETERRNO Errno()
77 #define ioctlsocket ioctl
78 #define closesocket close
79 #define SOCKETERRNO errno
81 #define SOCKLEN_T socklen_t
85 #define LHNET_RECVFROM_FLAGS MSG_DONTWAIT
86 #define LHNET_SENDTO_FLAGS 0
88 #define LHNET_RECVFROM_FLAGS 0
89 #define LHNET_SENDTO_FLAGS 0
92 typedef struct lhnetaddressnative_s
94 lhnetaddresstype_t addresstype;
99 struct sockaddr_in in;
101 struct sockaddr_in6 in6;
106 lhnetaddressnative_t;
108 // to make LHNETADDRESS_FromString resolve repeated hostnames faster, cache them
109 #define MAX_NAMECACHE 64
110 static struct namecache_s
112 lhnetaddressnative_t address;
113 double expirationtime;
116 namecache[MAX_NAMECACHE];
117 static int namecacheposition = 0;
119 int LHNETADDRESS_FromPort(lhnetaddress_t *vaddress, lhnetaddresstype_t addresstype, int port)
121 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
128 case LHNETADDRESSTYPE_LOOP:
129 // local:port (loopback)
130 memset(address, 0, sizeof(*address));
131 address->addresstype = LHNETADDRESSTYPE_LOOP;
132 address->port = port;
134 case LHNETADDRESSTYPE_INET4:
135 // 0.0.0.0:port (INADDR_ANY, binds to all interfaces)
136 memset(address, 0, sizeof(*address));
137 address->addresstype = LHNETADDRESSTYPE_INET4;
138 address->port = port;
139 address->addr.in.sin_family = AF_INET;
140 address->addr.in.sin_port = htons((unsigned short)port);
143 case LHNETADDRESSTYPE_INET6:
144 // [0:0:0:0:0:0:0:0]:port (IN6ADDR_ANY, binds to all interfaces)
145 memset(address, 0, sizeof(*address));
146 address->addresstype = LHNETADDRESSTYPE_INET6;
147 address->port = port;
148 address->addr.in6.sin6_family = AF_INET6;
149 address->addr.in6.sin6_port = htons((unsigned short)port);
157 int LHNETADDRESS_Resolve(lhnetaddressnative_t *address, const char *name, int port)
160 struct addrinfo hints;
161 struct addrinfo* addrinf;
164 dpsnprintf (port_buff, sizeof (port_buff), "%d", port);
165 port_buff[sizeof (port_buff) - 1] = '\0';
167 memset(&hints, 0, sizeof (hints));
168 hints.ai_family = AF_UNSPEC;
169 hints.ai_socktype = SOCK_DGRAM;
170 //hints.ai_flags = AI_PASSIVE;
172 err = getaddrinfo(name, port_buff, &hints, &addrinf);
173 if (err != 0 || addrinf == NULL)
175 if (addrinf->ai_addr->sa_family != AF_INET6 && addrinf->ai_addr->sa_family != AF_INET)
177 freeaddrinfo (addrinf);
182 if (addrinf->ai_addr->sa_family == AF_INET6)
184 address->addresstype = LHNETADDRESSTYPE_INET6;
185 memcpy(&address->addr.in6, addrinf->ai_addr, sizeof(address->addr.in6));
189 address->addresstype = LHNETADDRESSTYPE_INET4;
190 memcpy(&address->addr.in, addrinf->ai_addr, sizeof(address->addr.in));
192 address->port = port;
194 freeaddrinfo (addrinf);
198 int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int defaultport)
200 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
201 int i, port, d1, d2, d3, d4, resolved;
205 #ifdef STANDALONETEST
208 const char* addr_start;
209 const char* addr_end = NULL;
210 const char* port_name = NULL;
211 int addr_family = AF_UNSPEC;
213 if (!address || !string || !*string)
215 memset(address, 0, sizeof(*address));
216 address->addresstype = LHNETADDRESSTYPE_NONE;
219 // If it's a bracketed IPv6 address
220 if (string[0] == '[')
222 const char* end_bracket = strchr(string, ']');
224 if (end_bracket == NULL)
227 if (end_bracket[1] == ':')
228 port_name = end_bracket + 2;
229 else if (end_bracket[1] != '\0')
232 addr_family = AF_INET6;
233 addr_start = &string[1];
234 addr_end = end_bracket;
238 const char* first_colon;
242 // If it's a numeric non-bracket IPv6 address (-> no port),
243 // or it's a numeric IPv4 address, or a name, with a port
244 first_colon = strchr(string, ':');
245 if (first_colon != NULL)
247 const char* last_colon = strrchr(first_colon + 1, ':');
249 // If it's an numeric IPv4 address, or a name, with a port
250 if (last_colon == NULL)
252 addr_end = first_colon;
253 port_name = first_colon + 1;
256 addr_family = AF_INET6;
260 if (addr_end != NULL)
261 namelen = addr_end - addr_start;
263 namelen = strlen (addr_start);
265 if (namelen >= sizeof(name))
266 namelen = sizeof(name) - 1;
267 memcpy (name, addr_start, namelen);
271 port = atoi(port_name);
277 if (!strcmp(name, "local"))
279 address->addresstype = LHNETADDRESSTYPE_LOOP;
280 address->port = port;
283 // try to parse as dotted decimal ipv4 address first
284 // note this supports partial ip addresses
285 d1 = d2 = d3 = d4 = 0;
287 #define sscanf sscanf_s
289 if (addr_family != AF_INET6 &&
290 sscanf(name, "%d.%d.%d.%d", &d1, &d2, &d3, &d4) >= 1 && (unsigned int)d1 < 256 && (unsigned int)d2 < 256 && (unsigned int)d3 < 256 && (unsigned int)d4 < 256)
292 // parsed a valid ipv4 address
293 address->addresstype = LHNETADDRESSTYPE_INET4;
294 address->port = port;
295 address->addr.in.sin_family = AF_INET;
296 address->addr.in.sin_port = htons((unsigned short)port);
297 a = (unsigned char *)&address->addr.in.sin_addr;
302 #ifdef STANDALONETEST
303 LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
304 printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %s\n", string, string2);
308 for (i = 0;i < MAX_NAMECACHE;i++)
309 if (!strcmp(namecache[i].name, name))
311 #ifdef STANDALONETEST
312 if (i < MAX_NAMECACHE)
314 if (i < MAX_NAMECACHE && realtime < namecache[i].expirationtime)
317 *address = namecache[i].address;
318 address->port = port;
319 if (address->addresstype == LHNETADDRESSTYPE_INET6)
321 address->addr.in6.sin6_port = htons((unsigned short)port);
324 else if (address->addresstype == LHNETADDRESSTYPE_INET4)
326 address->addr.in.sin_port = htons((unsigned short)port);
332 for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
333 namecache[namecacheposition].name[i] = name[i];
334 namecache[namecacheposition].name[i] = 0;
335 #ifndef STANDALONETEST
336 namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
339 // try resolving the address (handles dns and other ip formats)
340 resolved = LHNETADDRESS_Resolve(address, name, port);
343 #ifdef STANDALONETEST
344 const char *protoname;
346 switch (address->addresstype)
348 case LHNETADDRESSTYPE_INET6:
351 case LHNETADDRESSTYPE_INET4:
355 protoname = "UNKNOWN";
358 LHNETADDRESS_ToString(vaddress, string2, sizeof(string2), 1);
359 Con_Printf("LHNETADDRESS_Resolve(\"%s\") returned %s address %s\n", string, protoname, string2);
361 namecache[namecacheposition].address = *address;
365 #ifdef STANDALONETEST
366 printf("name resolution failed on address \"%s\"\n", name);
368 namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
371 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
375 int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int defaultport)
377 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
378 int i, port, namelen, d1, d2, d3, d4;
379 struct hostent *hostentry;
383 #ifdef STANDALONETEST
386 if (!address || !string || !*string)
388 memset(address, 0, sizeof(*address));
389 address->addresstype = LHNETADDRESSTYPE_NONE;
391 colon = strrchr(string, ':');
393 port = atoi(colon + 1);
395 colon = string + strlen(string);
398 namelen = colon - string;
401 if (string[0] == '[' && namelen > 0 && string[namelen-1] == ']') // ipv6
406 memcpy(name, string, namelen);
409 if (!strcmp(name, "local"))
411 address->addresstype = LHNETADDRESSTYPE_LOOP;
412 address->port = port;
415 // try to parse as dotted decimal ipv4 address first
416 // note this supports partial ip addresses
417 d1 = d2 = d3 = d4 = 0;
419 #define sscanf sscanf_s
421 if (sscanf(name, "%d.%d.%d.%d", &d1, &d2, &d3, &d4) >= 1 && (unsigned int)d1 < 256 && (unsigned int)d2 < 256 && (unsigned int)d3 < 256 && (unsigned int)d4 < 256)
423 // parsed a valid ipv4 address
424 address->addresstype = LHNETADDRESSTYPE_INET4;
425 address->port = port;
426 address->addr.in.sin_family = AF_INET;
427 address->addr.in.sin_port = htons((unsigned short)port);
428 a = (unsigned char *)&address->addr.in.sin_addr;
433 #ifdef STANDALONETEST
434 LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
435 printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %s\n", string, string2);
439 for (i = 0;i < MAX_NAMECACHE;i++)
440 if (!strcmp(namecache[i].name, name))
442 #ifdef STANDALONETEST
443 if (i < MAX_NAMECACHE)
445 if (i < MAX_NAMECACHE && realtime < namecache[i].expirationtime)
448 *address = namecache[i].address;
449 address->port = port;
450 if (address->addresstype == LHNETADDRESSTYPE_INET6)
453 address->addr.in6.sin6_port = htons((unsigned short)port);
457 else if (address->addresstype == LHNETADDRESSTYPE_INET4)
459 address->addr.in.sin_port = htons((unsigned short)port);
464 // try gethostbyname (handles dns and other ip formats)
465 hostentry = gethostbyname(name);
468 if (hostentry->h_addrtype == AF_INET6)
472 address->addresstype = LHNETADDRESSTYPE_INET6;
473 address->port = port;
474 address->addr.in6.sin6_family = hostentry->h_addrtype;
475 address->addr.in6.sin6_port = htons((unsigned short)port);
476 memcpy(&address->addr.in6.sin6_addr, hostentry->h_addr_list[0], sizeof(address->addr.in6.sin6_addr));
477 for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
478 namecache[namecacheposition].name[i] = name[i];
479 namecache[namecacheposition].name[i] = 0;
480 #ifndef STANDALONETEST
481 namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
483 namecache[namecacheposition].address = *address;
484 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
485 #ifdef STANDALONETEST
486 LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
487 printf("gethostbyname(\"%s\") returned ipv6 address %s\n", string, string2);
492 else if (hostentry->h_addrtype == AF_INET)
495 address->addresstype = LHNETADDRESSTYPE_INET4;
496 address->port = port;
497 address->addr.in.sin_family = hostentry->h_addrtype;
498 address->addr.in.sin_port = htons((unsigned short)port);
499 memcpy(&address->addr.in.sin_addr, hostentry->h_addr_list[0], sizeof(address->addr.in.sin_addr));
500 for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
501 namecache[namecacheposition].name[i] = name[i];
502 namecache[namecacheposition].name[i] = 0;
503 #ifndef STANDALONETEST
504 namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
506 namecache[namecacheposition].address = *address;
507 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
508 #ifdef STANDALONETEST
509 LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
510 printf("gethostbyname(\"%s\") returned ipv4 address %s\n", string, string2);
515 #ifdef STANDALONETEST
516 printf("gethostbyname failed on address \"%s\"\n", name);
518 for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
519 namecache[namecacheposition].name[i] = name[i];
520 namecache[namecacheposition].name[i] = 0;
521 #ifndef STANDALONETEST
522 namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
524 namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
525 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
530 int LHNETADDRESS_ToString(const lhnetaddress_t *vaddress, char *string, int stringbuffersize, int includeport)
532 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
533 const unsigned char *a;
535 if (!address || !string || stringbuffersize < 1)
537 switch(address->addresstype)
541 case LHNETADDRESSTYPE_LOOP:
544 if (stringbuffersize >= 12)
546 dpsnprintf(string, stringbuffersize, "local:%d", address->port);
552 if (stringbuffersize >= 6)
554 memcpy(string, "local", 6);
559 case LHNETADDRESSTYPE_INET4:
560 a = (const unsigned char *)(&address->addr.in.sin_addr);
563 if (stringbuffersize >= 22)
565 dpsnprintf(string, stringbuffersize, "%d.%d.%d.%d:%d", a[0], a[1], a[2], a[3], address->port);
571 if (stringbuffersize >= 16)
573 dpsnprintf(string, stringbuffersize, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
579 case LHNETADDRESSTYPE_INET6:
580 a = (const unsigned char *)(&address->addr.in6.sin6_addr);
583 if (stringbuffersize >= 88)
585 dpsnprintf(string, stringbuffersize, "[%x:%x:%x:%x:%x:%x:%x:%x]:%d", a[0] * 256 + a[1], a[2] * 256 + a[3], a[4] * 256 + a[5], a[6] * 256 + a[7], a[8] * 256 + a[9], a[10] * 256 + a[11], a[12] * 256 + a[13], a[14] * 256 + a[15], address->port);
591 if (stringbuffersize >= 80)
593 dpsnprintf(string, stringbuffersize, "%x:%x:%x:%x:%x:%x:%x:%x", a[0] * 256 + a[1], a[2] * 256 + a[3], a[4] * 256 + a[5], a[6] * 256 + a[7], a[8] * 256 + a[9], a[10] * 256 + a[11], a[12] * 256 + a[13], a[14] * 256 + a[15]);
603 int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address)
606 return address->addresstype;
608 return LHNETADDRESSTYPE_NONE;
611 const char *LHNETADDRESS_GetInterfaceName(const lhnetaddress_t *vaddress)
614 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
616 if (address && address->addresstype == LHNETADDRESSTYPE_INET6)
620 static char ifname [IF_NAMESIZE];
622 if (if_indextoname(address->addr.in6.sin6_scope_id, ifname) == ifname)
627 // The Win32 API doesn't have if_indextoname() until Windows Vista,
628 // but luckily it just uses the interface ID as the interface name
630 static char ifname [16];
632 if (dpsnprintf(ifname, sizeof(ifname), "%lu", address->addr.in6.sin6_scope_id) > 0)
642 int LHNETADDRESS_GetPort(const lhnetaddress_t *address)
646 return address->port;
649 int LHNETADDRESS_SetPort(lhnetaddress_t *vaddress, int port)
651 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
654 address->port = port;
655 switch(address->addresstype)
657 case LHNETADDRESSTYPE_LOOP:
659 case LHNETADDRESSTYPE_INET4:
660 address->addr.in.sin_port = htons((unsigned short)port);
663 case LHNETADDRESSTYPE_INET6:
664 address->addr.in6.sin6_port = htons((unsigned short)port);
672 int LHNETADDRESS_Compare(const lhnetaddress_t *vaddress1, const lhnetaddress_t *vaddress2)
674 lhnetaddressnative_t *address1 = (lhnetaddressnative_t *)vaddress1;
675 lhnetaddressnative_t *address2 = (lhnetaddressnative_t *)vaddress2;
676 if (!address1 || !address2)
678 if (address1->addresstype != address2->addresstype)
680 switch(address1->addresstype)
682 case LHNETADDRESSTYPE_LOOP:
683 if (address1->port != address2->port)
686 case LHNETADDRESSTYPE_INET4:
687 if (address1->addr.in.sin_family != address2->addr.in.sin_family)
689 if (memcmp(&address1->addr.in.sin_addr, &address2->addr.in.sin_addr, sizeof(address1->addr.in.sin_addr)))
691 if (address1->port != address2->port)
695 case LHNETADDRESSTYPE_INET6:
696 if (address1->addr.in6.sin6_family != address2->addr.in6.sin6_family)
698 if (memcmp(&address1->addr.in6.sin6_addr, &address2->addr.in6.sin6_addr, sizeof(address1->addr.in6.sin6_addr)))
700 if (address1->port != address2->port)
709 typedef struct lhnetpacket_s
716 #ifndef STANDALONETEST
717 double sentdoubletime;
719 struct lhnetpacket_s *next, *prev;
723 static int lhnet_active;
724 static lhnetsocket_t lhnet_socketlist;
725 static lhnetpacket_t lhnet_packetlist;
727 static int lhnet_didWSAStartup = 0;
728 static WSADATA lhnet_winsockdata;
731 void LHNET_Init(void)
735 lhnet_socketlist.next = lhnet_socketlist.prev = &lhnet_socketlist;
736 lhnet_packetlist.next = lhnet_packetlist.prev = &lhnet_packetlist;
739 lhnet_didWSAStartup = !WSAStartup(MAKEWORD(1, 1), &lhnet_winsockdata);
740 if (!lhnet_didWSAStartup)
741 Con_Print("LHNET_Init: WSAStartup failed, networking disabled\n");
745 void LHNET_Shutdown(void)
750 while (lhnet_socketlist.next != &lhnet_socketlist)
751 LHNET_CloseSocket(lhnet_socketlist.next);
752 while (lhnet_packetlist.next != &lhnet_packetlist)
754 p = lhnet_packetlist.next;
755 p->prev->next = p->next;
756 p->next->prev = p->prev;
760 if (lhnet_didWSAStartup)
762 lhnet_didWSAStartup = 0;
769 static const char *LHNETPRIVATE_StrError(void)
772 int i = WSAGetLastError();
775 case WSAEINTR: return "WSAEINTR";
776 case WSAEBADF: return "WSAEBADF";
777 case WSAEACCES: return "WSAEACCES";
778 case WSAEFAULT: return "WSAEFAULT";
779 case WSAEINVAL: return "WSAEINVAL";
780 case WSAEMFILE: return "WSAEMFILE";
781 case WSAEWOULDBLOCK: return "WSAEWOULDBLOCK";
782 case WSAEINPROGRESS: return "WSAEINPROGRESS";
783 case WSAEALREADY: return "WSAEALREADY";
784 case WSAENOTSOCK: return "WSAENOTSOCK";
785 case WSAEDESTADDRREQ: return "WSAEDESTADDRREQ";
786 case WSAEMSGSIZE: return "WSAEMSGSIZE";
787 case WSAEPROTOTYPE: return "WSAEPROTOTYPE";
788 case WSAENOPROTOOPT: return "WSAENOPROTOOPT";
789 case WSAEPROTONOSUPPORT: return "WSAEPROTONOSUPPORT";
790 case WSAESOCKTNOSUPPORT: return "WSAESOCKTNOSUPPORT";
791 case WSAEOPNOTSUPP: return "WSAEOPNOTSUPP";
792 case WSAEPFNOSUPPORT: return "WSAEPFNOSUPPORT";
793 case WSAEAFNOSUPPORT: return "WSAEAFNOSUPPORT";
794 case WSAEADDRINUSE: return "WSAEADDRINUSE";
795 case WSAEADDRNOTAVAIL: return "WSAEADDRNOTAVAIL";
796 case WSAENETDOWN: return "WSAENETDOWN";
797 case WSAENETUNREACH: return "WSAENETUNREACH";
798 case WSAENETRESET: return "WSAENETRESET";
799 case WSAECONNABORTED: return "WSAECONNABORTED";
800 case WSAECONNRESET: return "WSAECONNRESET";
801 case WSAENOBUFS: return "WSAENOBUFS";
802 case WSAEISCONN: return "WSAEISCONN";
803 case WSAENOTCONN: return "WSAENOTCONN";
804 case WSAESHUTDOWN: return "WSAESHUTDOWN";
805 case WSAETOOMANYREFS: return "WSAETOOMANYREFS";
806 case WSAETIMEDOUT: return "WSAETIMEDOUT";
807 case WSAECONNREFUSED: return "WSAECONNREFUSED";
808 case WSAELOOP: return "WSAELOOP";
809 case WSAENAMETOOLONG: return "WSAENAMETOOLONG";
810 case WSAEHOSTDOWN: return "WSAEHOSTDOWN";
811 case WSAEHOSTUNREACH: return "WSAEHOSTUNREACH";
812 case WSAENOTEMPTY: return "WSAENOTEMPTY";
813 case WSAEPROCLIM: return "WSAEPROCLIM";
814 case WSAEUSERS: return "WSAEUSERS";
815 case WSAEDQUOT: return "WSAEDQUOT";
816 case WSAESTALE: return "WSAESTALE";
817 case WSAEREMOTE: return "WSAEREMOTE";
818 case WSAEDISCON: return "WSAEDISCON";
819 case 0: return "no error";
820 default: return "unknown WSAE error";
823 return strerror(errno);
827 void LHNET_SleepUntilPacket_Microseconds(int microseconds)
836 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
838 if (s->address.addresstype == LHNETADDRESSTYPE_INET4 || s->address.addresstype == LHNETADDRESSTYPE_INET6)
840 if (lastfd < s->inetsocket)
841 lastfd = s->inetsocket;
842 FD_SET((unsigned int)s->inetsocket, &fdreadset);
845 tv.tv_sec = microseconds / 1000000;
846 tv.tv_usec = microseconds % 1000000;
847 select(lastfd + 1, &fdreadset, NULL, NULL, &tv);
849 Sys_Sleep(microseconds);
853 lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
855 lhnetsocket_t *lhnetsocket, *s;
858 lhnetsocket = (lhnetsocket_t *)Z_Malloc(sizeof(*lhnetsocket));
861 memset(lhnetsocket, 0, sizeof(*lhnetsocket));
862 lhnetsocket->address = *address;
863 switch(lhnetsocket->address.addresstype)
865 case LHNETADDRESSTYPE_LOOP:
866 if (lhnetsocket->address.port == 0)
868 // allocate a port dynamically
869 // this search will always terminate because there is never
870 // an allocated socket with port 0, so if the number wraps it
871 // will find the port is unused, and then refuse to use port
872 // 0, causing an intentional failure condition
873 lhnetsocket->address.port = 1024;
876 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
877 if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.port == lhnetsocket->address.port)
879 if (s == &lhnet_socketlist)
881 lhnetsocket->address.port++;
884 // check if the port is available
885 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
886 if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.port == lhnetsocket->address.port)
888 if (s == &lhnet_socketlist && lhnetsocket->address.port != 0)
890 lhnetsocket->next = &lhnet_socketlist;
891 lhnetsocket->prev = lhnetsocket->next->prev;
892 lhnetsocket->next->prev = lhnetsocket;
893 lhnetsocket->prev->next = lhnetsocket;
897 case LHNETADDRESSTYPE_INET4:
899 case LHNETADDRESSTYPE_INET6:
902 if (lhnet_didWSAStartup)
906 if ((lhnetsocket->inetsocket = socket(address->addresstype == LHNETADDRESSTYPE_INET6 ? PF_INET6 : PF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
908 if ((lhnetsocket->inetsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
922 if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
926 // We need to set this flag to tell the OS that we only listen on IPv6. If we don't
927 // most OSes will create a dual-protocol socket that also listens on IPv4. In this case
928 // if an IPv4 socket is already bound to the port we want, our bind() call will fail.
930 if (address->addresstype != LHNETADDRESSTYPE_INET6
931 || setsockopt (lhnetsocket->inetsocket, IPPROTO_IPV6, IPV6_V6ONLY,
932 (const char *)&ipv6_only, sizeof(ipv6_only)) == 0
934 // The Win32 API only supports IPV6_V6ONLY since Windows Vista, but fortunately
935 // the default value is what we want on Win32 anyway (IPV6_V6ONLY = true)
936 || SOCKETERRNO == WSAENOPROTOOPT
941 lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
945 if (address->addresstype == LHNETADDRESSTYPE_INET6)
947 namelen = sizeof(localaddress->addr.in6);
948 bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
949 if (bindresult != -1)
950 getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
955 namelen = sizeof(localaddress->addr.in);
956 bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
957 if (bindresult != -1)
958 getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
960 if (bindresult != -1)
963 // enable broadcast on this socket
964 setsockopt(lhnetsocket->inetsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i));
965 lhnetsocket->next = &lhnet_socketlist;
966 lhnetsocket->prev = lhnetsocket->next->prev;
967 lhnetsocket->next->prev = lhnetsocket;
968 lhnetsocket->prev->next = lhnetsocket;
970 if (ioctlsocket(lhnetsocket->inetsocket, SIO_UDP_CONNRESET, &_false) == -1)
971 Con_DPrintf("LHNET_OpenSocket_Connectionless: ioctlsocket SIO_UDP_CONNRESET returned error: %s\n", LHNETPRIVATE_StrError());
976 Con_Printf("LHNET_OpenSocket_Connectionless: bind returned error: %s\n", LHNETPRIVATE_StrError());
980 Con_Printf("LHNET_OpenSocket_Connectionless: setsockopt(IPV6_V6ONLY) returned error: %s\n", LHNETPRIVATE_StrError());
984 Con_Printf("LHNET_OpenSocket_Connectionless: ioctlsocket returned error: %s\n", LHNETPRIVATE_StrError());
985 closesocket(lhnetsocket->inetsocket);
988 Con_Printf("LHNET_OpenSocket_Connectionless: socket returned error: %s\n", LHNETPRIVATE_StrError());
992 Con_Print("LHNET_OpenSocket_Connectionless: can't open a socket (WSAStartup failed during LHNET_Init)\n");
1003 void LHNET_CloseSocket(lhnetsocket_t *lhnetsocket)
1007 // unlink from socket list
1008 if (lhnetsocket->next == NULL)
1010 lhnetsocket->next->prev = lhnetsocket->prev;
1011 lhnetsocket->prev->next = lhnetsocket->next;
1012 lhnetsocket->next = NULL;
1013 lhnetsocket->prev = NULL;
1015 // no special close code for loopback, just inet
1016 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4 || lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
1018 closesocket(lhnetsocket->inetsocket);
1020 Z_Free(lhnetsocket);
1024 lhnetaddress_t *LHNET_AddressFromSocket(lhnetsocket_t *sock)
1027 return &sock->address;
1032 int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *vaddress)
1034 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
1036 if (!lhnetsocket || !address || !content || maxcontentlength < 1)
1038 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
1041 lhnetpacket_t *p, *pnext;
1042 // scan for any old packets to timeout while searching for a packet
1043 // that is waiting to be delivered to this socket
1044 currenttime = time(NULL);
1045 for (p = lhnet_packetlist.next;p != &lhnet_packetlist;p = pnext)
1048 if (p->timeout < currenttime)
1051 p->next->prev = p->prev;
1052 p->prev->next = p->next;
1056 #ifndef STANDALONETEST
1057 if (cl_netlocalping.value && (realtime - cl_netlocalping.value * (1.0 / 2000.0)) < p->sentdoubletime)
1060 if (value == 0 && p->destinationport == lhnetsocket->address.port)
1062 if (p->length <= maxcontentlength)
1064 lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
1065 *address = *localaddress;
1066 address->port = p->sourceport;
1067 memcpy(content, p->data, p->length);
1073 p->next->prev = p->prev;
1074 p->prev->next = p->next;
1079 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
1081 SOCKLEN_T inetaddresslength;
1082 address->addresstype = LHNETADDRESSTYPE_NONE;
1083 inetaddresslength = sizeof(address->addr.in);
1084 value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, LHNET_RECVFROM_FLAGS, &address->addr.sock, &inetaddresslength);
1087 address->addresstype = LHNETADDRESSTYPE_INET4;
1088 address->port = ntohs(address->addr.in.sin_port);
1093 int e = SOCKETERRNO;
1094 if (e == EWOULDBLOCK)
1099 Con_Print("Connection refused\n");
1102 Con_Printf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
1106 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
1108 SOCKLEN_T inetaddresslength;
1109 address->addresstype = LHNETADDRESSTYPE_NONE;
1110 inetaddresslength = sizeof(address->addr.in6);
1111 value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, 0, &address->addr.sock, &inetaddresslength);
1114 address->addresstype = LHNETADDRESSTYPE_INET6;
1115 address->port = ntohs(address->addr.in6.sin6_port);
1118 else if (value == -1)
1120 int e = SOCKETERRNO;
1121 if (e == EWOULDBLOCK)
1126 Con_Print("Connection refused\n");
1129 Con_Printf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
1136 int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentlength, const lhnetaddress_t *vaddress)
1138 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
1140 if (!lhnetsocket || !address || !content || contentlength < 1)
1142 if (lhnetsocket->address.addresstype != address->addresstype)
1144 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
1147 p = (lhnetpacket_t *)Z_Malloc(sizeof(*p) + contentlength);
1148 p->data = (void *)(p + 1);
1149 memcpy(p->data, content, contentlength);
1150 p->length = contentlength;
1151 p->sourceport = lhnetsocket->address.port;
1152 p->destinationport = address->port;
1153 p->timeout = time(NULL) + 10;
1154 p->next = &lhnet_packetlist;
1155 p->prev = p->next->prev;
1158 #ifndef STANDALONETEST
1159 p->sentdoubletime = realtime;
1161 value = contentlength;
1163 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
1165 value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, LHNET_SENDTO_FLAGS, (struct sockaddr *)&address->addr.in, sizeof(struct sockaddr_in));
1168 if (SOCKETERRNO == EWOULDBLOCK)
1170 Con_Printf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
1174 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
1176 value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, 0, (struct sockaddr *)&address->addr.in6, sizeof(struct sockaddr_in6));
1179 if (SOCKETERRNO == EWOULDBLOCK)
1181 Con_Printf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
1188 #ifdef STANDALONETEST
1189 int main(int argc, char **argv)
1192 char *buffer = "test", buffer2[1024];
1193 int blen = strlen(buffer);
1195 lhnetsocket_t *sock1;
1196 lhnetsocket_t *sock2;
1197 lhnetaddress_t myaddy1;
1198 lhnetaddress_t myaddy2;
1199 lhnetaddress_t myaddy3;
1200 lhnetaddress_t localhostaddy1;
1201 lhnetaddress_t localhostaddy2;
1205 printf("calling LHNET_Init\n");
1208 printf("calling LHNET_FromPort twice to create two local addresses\n");
1209 LHNETADDRESS_FromPort(&myaddy1, LHNETADDRESSTYPE_INET4, 4000);
1210 LHNETADDRESS_FromPort(&myaddy2, LHNETADDRESSTYPE_INET4, 4001);
1211 LHNETADDRESS_FromString(&localhostaddy1, "127.0.0.1", 4000);
1212 LHNETADDRESS_FromString(&localhostaddy2, "127.0.0.1", 4001);
1214 printf("calling LHNET_OpenSocket_Connectionless twice to create two local sockets\n");
1215 sock1 = LHNET_OpenSocket_Connectionless(&myaddy1);
1216 sock2 = LHNET_OpenSocket_Connectionless(&myaddy2);
1218 printf("calling LHNET_Write to send a packet from the first socket to the second socket\n");
1219 test1 = LHNET_Write(sock1, buffer, blen, &localhostaddy2);
1220 printf("sleeping briefly\n");
1226 printf("calling LHNET_Read on the second socket to read the packet sent from the first socket\n");
1227 test2 = LHNET_Read(sock2, buffer2, b2len - 1, &myaddy3);
1229 Con_Printf("socket to socket test succeeded\n");
1231 Con_Printf("socket to socket test failed\n");
1234 printf("press any key to exit\n");
1238 printf("calling LHNET_Shutdown\n");
1240 printf("exiting\n");
1243 lhnetsocket_t *sock[16], *sendsock;
1252 int sendmessagelength;
1253 lhnetaddress_t destaddress;
1254 lhnetaddress_t receiveaddress;
1255 lhnetaddress_t sockaddress[16];
1256 char buffer[1536], addressstring[128], addressstring2[128];
1257 if ((argc == 2 || argc == 5) && (port = atoi(argv[1])) >= 1 && port < 65535)
1259 printf("calling LHNET_Init()\n");
1263 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_LOOP, port);
1264 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET4, port);
1265 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET6, port+1);
1269 sendmessagelength = 0;
1271 for (i = 0;i < numsockets;i++)
1273 LHNETADDRESS_ToString(&sockaddress[i], addressstring, sizeof(addressstring), 1);
1274 printf("calling LHNET_OpenSocket_Connectionless(<%s>)\n", addressstring);
1275 if ((sock[i] = LHNET_OpenSocket_Connectionless(&sockaddress[i])))
1277 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
1278 printf("opened socket successfully (address \"%s\")\n", addressstring2);
1282 printf("failed to open socket\n");
1293 count = atoi(argv[2]);
1294 if (LHNETADDRESS_FromString(&destaddress, argv[3], -1))
1296 sendmessage = argv[4];
1297 sendmessagelength = strlen(sendmessage);
1299 for (i = 0;i < numsockets;i++)
1300 if (sock[i] && LHNETADDRESS_GetAddressType(&destaddress) == LHNETADDRESS_GetAddressType(&sockaddress[i]))
1302 if (sendsock == NULL)
1304 printf("Could not find an open socket matching the addresstype (%i) of destination address, switching to listen only mode\n", LHNETADDRESS_GetAddressType(&destaddress));
1310 printf("LHNETADDRESS_FromString did not like the address \"%s\", switching to listen only mode\n", argv[3]);
1314 printf("started, now listening for \"exit\" on the opened sockets\n");
1315 oldtime = time(NULL);
1323 for (i = 0;i < numsockets;i++)
1327 length = LHNET_Read(sock[i], buffer, sizeof(buffer), &receiveaddress);
1329 printf("localsock read error: length < 0");
1330 else if (length > 0 && length < (int)sizeof(buffer))
1333 LHNETADDRESS_ToString(&receiveaddress, addressstring, sizeof(addressstring), 1);
1334 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
1335 printf("received message \"%s\" from \"%s\" on socket \"%s\"\n", buffer, addressstring, addressstring2);
1336 if (!strcmp(buffer, "exit"))
1343 if (argc == 5 && count > 0)
1345 newtime = time(NULL);
1346 if (newtime != oldtime)
1348 LHNETADDRESS_ToString(&destaddress, addressstring, sizeof(addressstring), 1);
1349 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sendsock), addressstring2, sizeof(addressstring2), 1);
1350 printf("calling LHNET_Write(<%s>, \"%s\", %i, <%s>)\n", addressstring2, sendmessage, sendmessagelength, addressstring);
1351 length = LHNET_Write(sendsock, sendmessage, sendmessagelength, &destaddress);
1352 if (length == sendmessagelength)
1353 printf("sent successfully\n");
1355 printf("LH_Write failed, returned %i (length of message was %i)\n", length, strlen(argv[4]));
1359 printf("Done sending, still listening for \"exit\"\n");
1363 for (i = 0;i < numsockets;i++)
1367 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
1368 printf("calling LHNET_CloseSocket(<%s>)\n", addressstring2);
1369 LHNET_CloseSocket(sock[i]);
1372 printf("calling LHNET_Shutdown()\n");
1376 printf("Testing code for lhnet.c\nusage: lhnettest <localportnumber> [<sendnumberoftimes> <sendaddress:port> <sendmessage>]\n");