src/inetfile/chttpget.cpp

   1 /*
   2  * Copyright (C) Volition, Inc. 1999.  All rights reserved.
   3  *
   4  * All source code herein is the property of Volition, Inc. You may not sell
   5  * or otherwise commercially exploit the source or things you created based on
   6  * the source.
   7  */
   8
   9 /*
  10 * $Logfile: /Freespace2/code/Inetfile/Chttpget.cpp $
  11 * $Revision$
  12 * $Date$
  13 * $Author$
  14 *
  15 * HTTP Client class (get only)
  16 *
  17 * $Log$
  18 * Revision 1.8  2002/06/21 03:04:12  relnev
  19 * nothing important
  20 *
  21 * Revision 1.7  2002/06/17 06:33:09  relnev
  22 * ryan's struct patch for gcc 2.95
  23 *
  24 * Revision 1.6  2002/06/09 04:41:21  relnev
  25 * added copyright header
  26 *
  27 * Revision 1.5  2002/06/02 04:26:34  relnev
  28 * warning cleanup
  29 *
  30 * Revision 1.4  2002/05/26 20:32:24  theoddone33
  31 * Fix some minor stuff
  32 *
  33 * Revision 1.3  2002/05/26 20:20:54  relnev
  34 * unix.h: updated
  35 *
  36 * inetfile/: complete
  37 *
  38 * Revision 1.2  2002/05/07 03:16:45  theoddone33
  39 * The Great Newline Fix
  40 *
  41 * Revision 1.1.1.1  2002/05/03 03:28:09  root
  42 * Initial import.
  43 *
  44  *
  45  * 5     8/24/99 1:49a Dave
  46  * Fixed client-side afterburner stuttering. Added checkbox for no version
  47  * checking on PXO join. Made button info passing more friendly between
  48  * client and server.
  49  *
  50  * 4     8/22/99 1:19p Dave
  51  * Fixed up http proxy code. Cleaned up scoring code. Reverse the order in
  52  * which d3d cards are detected.
  53  *
  54  * 21    8/21/99 6:33p Kevin
  55  * Fixed Proxy Stuff
  56  *
  57  * 20    8/21/99 6:48a Jeff
  58  * Linux port
  59  *
  60  * 19    8/20/99 3:01p Kevin
  61  * Added support for Proxies (I hope!)
  62  *
  63  * 18    8/15/99 6:38p Jeff
  64  * fixed compile error
  65  *
  66  * 17    8/15/99 6:26p Kevin
  67  *
  68  * 16    4/14/99 1:20a Jeff
  69  * fixed case mismatched #includes
  70  *
  71  * 15    3/03/99 12:28a Nate
  72  * sped up something or other when the connection is done
  73  *
  74  * 14    2/03/99 4:20p Kevin
  75  * Got multiplayer working with .mn3 files, and setup autodownloading
  76  *
  77  * 13    1/27/99 5:49p Kevin
  78  *
  79  * 12    1/27/99 5:38p Kevin
  80  *
  81  * 11    12/30/98 12:15p Kevin
  82  * Auto Mission Download system
  83  *
  84  * 10    10/12/98 4:59p Kevin
  85  * Added delay to thread when cancelled...
  86  *
  87  * 9     10/12/98 4:49p Nate
  88  * More fixes
  89  *
  90  * 8     10/12/98 1:54p Nate
  91  * Fixed bug
  92  *
  93  * 7     10/12/98 11:30a Kevin
  94  * More memory stuff
  95  *
  96  * 6     10/08/98 12:59p Nate
  97  * fixed cancel
  98  *
  99  * 5     10/08/98 9:57a Kevin
 100  * made transfer cancellable
 101  *
 102  * 4     7/31/98 12:19p Nate
 103  * Fixed http abort problem.
 104  *
 105  * 3     7/31/98 11:57a Kevin
 106  * Added new functions for getting state
 107  *
 108  * 2     6/01/98 10:10a Kevin
 109  * Added DLL connection interface and auto update DLL
 110  *
 111  * 1     5/27/98 9:52a Kevin
 112  *
 113  * 1     5/25/98 5:31p Kevin
 114  * Initial version
 115 *
 116 * $NoKeywords: $
 117 */
 118
 119
 120 #ifndef PLAT_UNIX
 121 #include <winsock2.h>
 122 #else
 123 #include <sys/types.h>
 124 #include <sys/socket.h>
 125 #include <netinet/in.h>
 126 #include <arpa/inet.h>
 127 #include <netdb.h>
 128 #include <sys/ioctl.h>
 129 #include <errno.h>
 130 #include <sys/time.h>
 131 #include <unistd.h>
 132 #endif
 133
 134 #include <string.h>
 135 #include <stdio.h>
 136 #include <stdlib.h>
 137 #include <ctype.h>
 138
 139 #include "pstypes.h"
 140 #include "inetgetfile.h"
 141 #include "chttpget.h"
 142
 143
 144
 145 #define NW_AGHBN_CANCEL         1
 146 #define NW_AGHBN_LOOKUP         2
 147 #define NW_AGHBN_READ           3
 148
 149 int http_gethostbynameworker(void *parm);
 150
 151
 152 int http_Asyncgethostbyname(in_addr_t *ip, int command, char *hostname);
 153
 154 int HTTPObjThread( void * obj )
 155 {
 156         ((ChttpGet *)obj)->WorkerThread();
 157         ((ChttpGet *)obj)->m_Aborted = true;
 158
 159         return ((ChttpGet *)obj)->GetStatus();
 160 }
 161
 162 void ChttpGet::AbortGet()
 163 {
 164         m_Aborting = true;
 165         while(!m_Aborted) SDL_Delay(10); //Wait for the thread to end
 166 }
 167
 168 ChttpGet::ChttpGet(char *URL,char *localfile,char *proxyip,unsigned short proxyport)
 169 {
 170         m_ProxyEnabled = true;
 171         m_ProxyIP = proxyip;
 172         m_ProxyPort = proxyport;
 173         GetFile(URL,localfile);
 174 }
 175
 176 ChttpGet::ChttpGet(char *URL,char *localfile)
 177 {
 178         m_ProxyEnabled = false;
 179         GetFile(URL,localfile);
 180 }
 181
 182
 183 void ChttpGet::GetFile(char *URL,char *localfile)
 184 {
 185         m_DataSock = INVALID_SOCKET;
 186         m_iBytesIn = 0;
 187         m_iBytesTotal = 0;
 188         m_State = HTTP_STATE_STARTUP;;
 189         m_Aborting = false;
 190         m_Aborted = false;
 191
 192         SDL_strlcpy(m_URL, URL, SDL_arraysize(m_URL));
 193
 194         LOCALFILE = fopen(localfile,"wb");
 195         if(NULL == LOCALFILE)
 196         {
 197                 m_State = HTTP_STATE_CANT_WRITE_FILE;
 198                 m_Aborted = true;
 199                 return;
 200         }
 201         m_DataSock = socket(AF_INET, SOCK_STREAM, 0);
 202         if(INVALID_SOCKET == m_DataSock)
 203         {
 204                 m_State = HTTP_STATE_SOCKET_ERROR;
 205                 m_Aborted = true;
 206                 return;
 207         }
 208         unsigned long arg;
 209
 210         arg = 1;
 211
 212         ioctlsocket( m_DataSock, FIONBIO, &arg );
 213
 214         char *pURL = URL;
 215         if(SDL_strncasecmp(URL,"http:",5)==0)
 216         {
 217                 pURL +=5;
 218                 while(*pURL == '/')
 219                 {
 220                         pURL++;
 221                 }
 222         }
 223         //There shouldn't be any : in this string
 224         if(SDL_strchr(pURL,':'))
 225         {
 226                 m_State = HTTP_STATE_URL_PARSING_ERROR;
 227                 m_Aborted = true;
 228                 return;
 229         }
 230         //read the filename by searching backwards for a /
 231         //then keep reading until you find the first /
 232         //when you found it, you have the host and dir
 233         char *filestart = NULL;
 234         char *dirstart = NULL;
 235         for(int i = strlen(pURL);i>=0;i--)
 236         {
 237                 if(pURL[i]== '/')
 238                 {
 239                         if(!filestart)
 240                         {
 241                                 filestart = pURL+i+1;
 242                                 dirstart = pURL+i+1;
 243                                 SDL_strlcpy(m_szFilename, filestart, SDL_arraysize(m_szFilename));
 244                         }
 245                         else
 246                         {
 247                                 dirstart = pURL+i+1;
 248                         }
 249                 }
 250         }
 251         if((dirstart==NULL) || (filestart==NULL))
 252         {
 253                 m_State = HTTP_STATE_URL_PARSING_ERROR;
 254                 m_Aborted = true;
 255                 return;
 256         }
 257         else
 258         {
 259                 SDL_strlcpy(m_szDir, dirstart, SDL_arraysize(m_szDir));//,(filestart-dirstart));
 260                 int len = min((dirstart-pURL), (int)SDL_arraysize(m_szHost));
 261                 SDL_strlcpy(m_szHost, pURL, len);
 262         }
 263
 264         SDL_Thread *thread = SDL_CreateThread(HTTPObjThread, "HTTPObjThread", this);
 265
 266         if(thread == NULL)
 267         {
 268                 m_State = HTTP_STATE_INTERNAL_ERROR;
 269                 m_Aborted = true;
 270         }
 271         else
 272         {
 273                 int ret_val = 0;
 274                 SDL_WaitThread(thread, &ret_val);
 275         }
 276 }
 277
 278
 279 ChttpGet::~ChttpGet()
 280 {
 281         if(m_DataSock != INVALID_SOCKET)
 282         {
 283                 shutdown(m_DataSock,2);
 284                 closesocket(m_DataSock);
 285         }
 286
 287         if(LOCALFILE != NULL)
 288         {
 289                 fclose(LOCALFILE);
 290         }
 291 }
 292
 293 int ChttpGet::GetStatus()
 294 {
 295         return m_State;
 296 }
 297
 298 unsigned int ChttpGet::GetBytesIn()
 299 {
 300         return m_iBytesIn;
 301 }
 302
 303 unsigned int ChttpGet::GetTotalBytes()
 304 {
 305         return m_iBytesTotal;
 306 }
 307
 308
 309 void ChttpGet::WorkerThread()
 310 {
 311         char szCommand[1000];
 312         char *p;
 313         int irsp = 0;
 314         ConnectSocket();
 315         if(m_Aborting)
 316         {
 317                 fclose(LOCALFILE);
 318                 LOCALFILE = NULL;
 319                 return;
 320         }
 321         if(m_State != HTTP_STATE_CONNECTED)
 322         {
 323                 fclose(LOCALFILE);
 324                 LOCALFILE = NULL;
 325                 return;
 326         }
 327         SDL_snprintf(szCommand,SDL_arraysize(szCommand),"GET %s%s HTTP/1.1\nAccept: */*\nAccept-Encoding: deflate\nHost: %s\n\n\n",m_ProxyEnabled?"":"/",m_ProxyEnabled?m_URL:m_szDir,m_szHost);
 328         send(m_DataSock,szCommand,strlen(szCommand),0);
 329         p = GetHTTPLine();
 330         if(SDL_strncasecmp("HTTP/",p,5)==0)
 331         {
 332                 char *pcode;
 333                 pcode = SDL_strchr(p,' ')+1;
 334                 if(!pcode)
 335                 {
 336                         m_State = HTTP_STATE_UNKNOWN_ERROR;
 337                         fclose(LOCALFILE);
 338                         LOCALFILE = NULL;
 339                         return;
 340
 341                 }
 342                 pcode[3] = '\0';
 343                 irsp = atoi(pcode);
 344
 345                 if(irsp == 0)
 346                 {
 347                         m_State = HTTP_STATE_UNKNOWN_ERROR;
 348                         fclose(LOCALFILE);
 349                         LOCALFILE = NULL;
 350                         return;
 351                 }
 352                 if(irsp==200)
 353                 {
 354                         do
 355                         {
 356                                 p = GetHTTPLine();
 357                                 if(p==NULL)
 358                                 {
 359                                         m_State = HTTP_STATE_UNKNOWN_ERROR;
 360                                         fclose(LOCALFILE);
 361                                         LOCALFILE = NULL;
 362                                         return;
 363                                 }
 364                                 if(*p=='\0')
 365                                 {
 366                                         break;
 367                                 }
 368                                 if(SDL_strncasecmp(p,"Content-Length:",strlen("Content-Length:"))==0)
 369                                 {
 370                                         char *s = SDL_strchr(p,' ')+1;
 371                                         p = s;
 372                                         if(s)
 373                                         {
 374                                                 while(*s)
 375                                                 {
 376                                                         if(!isdigit(*s))
 377                                                         {
 378                                                                 *s='\0';
 379                                                         }
 380                                                         s++;
 381                                                 };
 382                                                 m_iBytesTotal = atoi(p);
 383                                         }
 384
 385                                 }
 386
 387                                 SDL_Delay(1);
 388                         }while(true);
 389                 ReadDataChannel();
 390                 return;
 391                 }
 392                 m_State = HTTP_STATE_FILE_NOT_FOUND;
 393                 fclose(LOCALFILE);
 394                 LOCALFILE = NULL;
 395                 return;
 396         }
 397         else
 398         {
 399                 m_State = HTTP_STATE_UNKNOWN_ERROR;
 400                 fclose(LOCALFILE);
 401                 LOCALFILE = NULL;
 402                 return;
 403         }
 404 }
 405
 406 int ChttpGet::ConnectSocket()
 407 {
 408         in_addr_t ip;
 409         struct servent *se;
 410         struct sockaddr_in hostaddr;
 411         if(m_Aborting){
 412                 return 0;
 413         }
 414
 415         ip = inet_addr((const char *)m_szHost);
 416
 417         int rcode = 0;
 418         if(ip==INADDR_NONE)
 419         {
 420                 http_Asyncgethostbyname(&ip,NW_AGHBN_LOOKUP,m_szHost);
 421                 do
 422                 {
 423                         if(m_Aborting)
 424                         {
 425                                 http_Asyncgethostbyname(&ip,NW_AGHBN_CANCEL,m_szHost);
 426                                 return 0;
 427                         }
 428                         rcode = http_Asyncgethostbyname(&ip,NW_AGHBN_READ,m_szHost);
 429
 430                         SDL_Delay(1);
 431                 }while(rcode==0);
 432         }
 433
 434         if(rcode == -1)
 435         {
 436                 m_State = HTTP_STATE_HOST_NOT_FOUND;
 437                 return 0;
 438         }
 439         //m_ControlSock
 440         if(m_Aborting)
 441                 return 0;
 442         se = getservbyname("http", NULL);
 443         if(m_Aborting)
 444                 return 0;
 445         if(se == NULL)
 446         {
 447                 hostaddr.sin_port = htons(80);
 448         }
 449         else
 450         {
 451                 hostaddr.sin_port = se->s_port;
 452         }
 453         hostaddr.sin_family = AF_INET;
 454         //ip = htonl(ip);
 455         hostaddr.sin_addr.s_addr = ip;
 456
 457         if(m_ProxyEnabled)
 458         {
 459                 //This is on a proxy, so we need to make sure to connect to the proxy machine
 460                 ip = inet_addr((const char *)m_ProxyIP);
 461
 462                 if(ip==INADDR_NONE)
 463                 {
 464                         http_Asyncgethostbyname(&ip,NW_AGHBN_LOOKUP,m_ProxyIP);
 465
 466                         do
 467                         {
 468                                 if(m_Aborting)
 469                                 {
 470                                         http_Asyncgethostbyname(&ip,NW_AGHBN_CANCEL,m_ProxyIP);
 471                                         return 0;
 472                                 }
 473                                 rcode = http_Asyncgethostbyname(&ip,NW_AGHBN_READ,m_ProxyIP);
 474
 475                                 SDL_Delay(1);
 476                         }while(rcode==0);
 477
 478
 479                         if(rcode == -1)
 480                         {
 481                                 m_State = HTTP_STATE_HOST_NOT_FOUND;
 482                                 return 0;
 483                         }
 484
 485                 }
 486                 //Use either the proxy port or 80 if none specified
 487                 hostaddr.sin_port = htons((ushort)(m_ProxyPort ? m_ProxyPort : 80));
 488                 //Copy the proxy address...
 489                 hostaddr.sin_addr.s_addr = ip;
 490
 491         }
 492         //Now we will connect to the host
 493         fd_set  wfds;
 494
 495         timeval timeout;
 496         timeout.tv_sec = 0;
 497         timeout.tv_usec = 0;
 498         int serr = connect(m_DataSock, (struct sockaddr *)&hostaddr, sizeof(struct sockaddr));
 499         int cerr = WSAGetLastError();
 500         if(serr)
 501         {
 502                 while((cerr==WSAEALREADY)||(cerr==WSAEINVAL)||NETCALL_WOULDBLOCK(cerr))
 503                 {
 504                         FD_ZERO(&wfds);
 505                         FD_SET( m_DataSock, &wfds );
 506                         if(select(m_DataSock+1,NULL,&wfds,NULL,&timeout))
 507                         {
 508                                 serr = 0;
 509                                 break;
 510                         }
 511                         if(m_Aborting)
 512                                 return 0;
 513                         serr = connect(m_DataSock, (struct sockaddr *)&hostaddr, sizeof(struct sockaddr));
 514                         if(serr == 0)
 515                                 break;
 516                         cerr = WSAGetLastError();
 517                         if(cerr==WSAEISCONN)
 518                         {
 519                                 serr = 0;
 520                                 break;
 521                         }
 522
 523                         SDL_Delay(1);
 524                 };
 525         }
 526         if(serr)
 527         {
 528                 m_State = HTTP_STATE_CANT_CONNECT;
 529                 return 0;
 530         }
 531         m_State = HTTP_STATE_CONNECTED;
 532         return 1;
 533 }
 534
 535 char *ChttpGet::GetHTTPLine()
 536 {
 537         int iBytesRead;
 538         char chunk[2];
 539         unsigned int igotcrlf = 0;
 540         memset(recv_buffer,0,1000);
 541         do
 542         {
 543                 chunk[0]='\0';
 544                 bool gotdata = false;
 545                 do
 546                 {
 547                         iBytesRead = recv(m_DataSock,chunk,1,0);
 548
 549                         if(SOCKET_ERROR == iBytesRead)
 550                         {
 551                                 int error = WSAGetLastError();
 552                                 if(NETCALL_WOULDBLOCK(error))
 553                                 {
 554                                         gotdata = false;
 555                                         continue;
 556                                 }
 557                                 else
 558                                         return NULL;
 559                         }
 560                         else
 561                         {
 562                                 gotdata = true;
 563                         }
 564
 565                         SDL_Delay(1);
 566                 }while(!gotdata);
 567
 568                 if(chunk[0]==0x0d)
 569                 {
 570                         //This should always read a 0x0a
 571                         do
 572                         {
 573                                 iBytesRead = recv(m_DataSock,chunk,1,0);
 574
 575                                 if(SOCKET_ERROR == iBytesRead)
 576                                 {
 577                                         int error = WSAGetLastError();
 578                                         if(NETCALL_WOULDBLOCK(error))
 579                                         {
 580                                                 gotdata = false;
 581                                                 continue;
 582                                         }
 583                                         else
 584                                                 return NULL;
 585                                 }
 586                                 else
 587                                 {
 588                                         gotdata = true;
 589                                 }
 590
 591                                 SDL_Delay(1);
 592                         }while(!gotdata);
 593                         igotcrlf = 1;
 594                 }
 595                 else
 596                 {       chunk[1] = '\0';
 597                         SDL_strlcat(recv_buffer, chunk, SDL_arraysize(recv_buffer));
 598                 }
 599
 600                 SDL_Delay(1);
 601         }while(igotcrlf==0);
 602         return recv_buffer;
 603 }
 604
 605 unsigned int ChttpGet::ReadDataChannel()
 606 {
 607         char sDataBuffer[4096];         // Data-storage buffer for the data channel
 608         int nBytesRecv = 0;                                             // Bytes received from the data channel
 609
 610         fd_set  wfds;
 611
 612         timeval timeout;
 613         timeout.tv_sec = 0;
 614         timeout.tv_usec = 500;
 615
 616         m_State = HTTP_STATE_RECEIVING;
 617    do
 618    {
 619                 FD_ZERO(&wfds);
 620                 FD_SET( m_DataSock, &wfds );
 621
 622                 if((m_iBytesTotal)&&(m_iBytesIn==m_iBytesTotal))
 623                 {
 624                         break;
 625                 }
 626                 select(m_DataSock+1,&wfds,NULL,NULL,&timeout);
 627         if(m_Aborting)
 628                 {
 629                         fclose(LOCALFILE);
 630                         LOCALFILE = NULL;
 631                         return 0;
 632                 }
 633                 nBytesRecv = recv(m_DataSock, (char *)&sDataBuffer,sizeof(sDataBuffer), 0);
 634         if(m_Aborting)
 635                 {
 636                         fclose(LOCALFILE);
 637                         LOCALFILE = NULL;
 638                         return 0;
 639                 }
 640                 if(SOCKET_ERROR == nBytesRecv)
 641                 {
 642                         int error = WSAGetLastError();
 643                         if(NETCALL_WOULDBLOCK(error))
 644                         {
 645                                 nBytesRecv = 1;
 646                                 continue;
 647                         }
 648                 }
 649                 m_iBytesIn += nBytesRecv;
 650                 if (nBytesRecv > 0 )
 651                 {
 652                         fwrite(sDataBuffer,nBytesRecv,1,LOCALFILE);
 653                         //Write sDataBuffer, nBytesRecv
 654         }
 655
 656                 SDL_Delay(1);
 657         }while (nBytesRecv > 0);
 658         fclose(LOCALFILE);
 659         LOCALFILE = NULL;
 660         // Close the file and check for error returns.
 661         if (nBytesRecv == SOCKET_ERROR)
 662         {
 663                 //Ok, we got a socket error -- xfer aborted?
 664                 m_State = HTTP_STATE_RECV_FAILED;
 665                 return 0;
 666         }
 667         else
 668         {
 669                 //OutputDebugString("HTTP File complete!\n");
 670                 //done!
 671                 m_State = HTTP_STATE_FILE_RECEIVED;
 672                 return 1;
 673         }
 674 }
 675
 676
 677 typedef struct _async_dns_lookup
 678 {
 679         in_addr_t ip;   //resolved host. Write only to worker thread.
 680         char * host;//host name to resolve. read only to worker thread
 681         bool done;      //write only to the worker thread. Signals that the operation is complete
 682         bool error; //write only to worker thread. Thread sets this if the name doesn't resolve
 683         bool abort;     //read only to worker thread. If this is set, don't fill in the struct.
 684 }async_dns_lookup;
 685
 686 async_dns_lookup httpaslu;
 687 async_dns_lookup *http_lastaslu = NULL;
 688
 689 int http_gethostbynameworker(void *parm);
 690
 691 int http_Asyncgethostbyname(in_addr_t *ip,int command, char *hostname)
 692 {
 693
 694         if(command==NW_AGHBN_LOOKUP)
 695         {
 696                 if(http_lastaslu)
 697                         http_lastaslu->abort = true;
 698
 699                 async_dns_lookup *newaslu;
 700                 newaslu = (async_dns_lookup *)malloc(sizeof(async_dns_lookup));
 701                 newaslu->ip = 0;
 702                 newaslu->host = hostname;
 703                 newaslu->done = false;
 704                 newaslu->error = false;
 705                 newaslu->abort = false;
 706                 http_lastaslu = newaslu;
 707                 httpaslu.done = false;
 708
 709                 SDL_CreateThread(http_gethostbynameworker, "GetHostByNameWorker", newaslu);
 710
 711                 return 1;
 712         }
 713         else if(command==NW_AGHBN_CANCEL)
 714         {
 715                 if(http_lastaslu)
 716                         http_lastaslu->abort = true;
 717                 http_lastaslu = NULL;
 718         }
 719         else if(command==NW_AGHBN_READ)
 720         {
 721                 if(!http_lastaslu)
 722                         return -1;
 723                 if(httpaslu.done)
 724                 {
 725                         //free(http_lastaslu);
 726                         http_lastaslu = NULL;
 727                         *ip = httpaslu.ip;
 728                         return 1;
 729                 }
 730                 else if(httpaslu.error)
 731                 {
 732                         free(http_lastaslu);
 733                         http_lastaslu = NULL;
 734                         return -1;
 735                 }
 736                 else return 0;
 737         }
 738         return -2;
 739
 740 }
 741
 742 // This is the worker thread which does the lookup.
 743 int http_gethostbynameworker(void *parm)
 744 {
 745         async_dns_lookup *lookup = (async_dns_lookup *)parm;
 746         struct hostent *he = gethostbyname(lookup->host);
 747         if(he==NULL)
 748         {
 749                 lookup->error = true;
 750                 return 1;
 751         }
 752         else if(!lookup->abort)
 753         {
 754                 lookup->ip = ((in_addr *)(he->h_addr))->s_addr;
 755                 lookup->done = true;
 756                 memcpy(&httpaslu,lookup,sizeof(async_dns_lookup));
 757         }
 758         free(lookup);
 759
 760         return 0;
 761 }