2 // Written by Forest Hale 2003-06-15 and placed into public domain.
12 #include <sys/socket.h>
13 #include <sys/ioctl.h>
16 #include <netinet/in.h>
17 #include <arpa/inet.h>
20 // for Z_Malloc/Z_Free in quake
21 #ifndef STANDALONETEST
27 #define Con_Print printf
28 #define Con_Printf printf
29 #define Z_Malloc malloc
35 // to make LHNETADDRESS_FromString resolve repeated hostnames faster, cache them
36 #define MAX_NAMECACHE 64
37 static struct namecache_s
39 lhnetaddress_t address;
42 namecache[MAX_NAMECACHE];
43 static int namecacheposition = 0;
45 int LHNETADDRESS_FromPort(lhnetaddress_t *address, int addresstype, int port)
51 case LHNETADDRESSTYPE_LOOP:
52 // local:port (loopback)
53 memset(address, 0, sizeof(*address));
54 address->addresstype = LHNETADDRESSTYPE_LOOP;
55 address->addressdata.loop.port = port;
57 case LHNETADDRESSTYPE_INET4:
58 // 0.0.0.0:port (INADDR_ANY, binds to all interfaces)
59 memset(address, 0, sizeof(*address));
60 address->addresstype = LHNETADDRESSTYPE_INET4;
61 address->addressdata.inet4.family = LHNETADDRESSTYPE_INET4_FAMILY;
62 address->addressdata.inet4.port = htons((unsigned short)port);
64 case LHNETADDRESSTYPE_INET6:
65 // [0:0:0:0:0:0:0:0]:port (IN6ADDR_ANY, binds to all interfaces)
66 memset(address, 0, sizeof(*address));
67 address->addresstype = LHNETADDRESSTYPE_INET6;
68 address->addressdata.inet6.family = LHNETADDRESSTYPE_INET6_FAMILY;
69 address->addressdata.inet6.port = htons((unsigned short)port);
75 int LHNETADDRESS_FromString(lhnetaddress_t *address, const char *string, int defaultport)
77 int i, port, namelen, d1, d2, d3, d4;
78 struct hostent *hostentry;
81 if (!address || !string)
83 memset(address, 0, sizeof(*address));
84 address->addresstype = LHNETADDRESSTYPE_NONE;
86 colon = strrchr(string, ':');
88 port = atoi(colon + 1);
90 colon = string + strlen(string);
93 namelen = colon - string;
96 if (string[0] == '[' && namelen > 0 && string[namelen-1] == ']') // ipv6
101 memcpy(name, string, namelen);
104 if (!strcmp(name, "local"))
106 address->addresstype = LHNETADDRESSTYPE_LOOP;
107 address->addressdata.loop.port = port;
110 // try to parse as dotted decimal ipv4 address first
111 if (sscanf(name, "%d.%d.%d.%d", &d1, &d2, &d3, &d4) == 4 && (unsigned int)d1 < 256 && (unsigned int)d2 < 256 && (unsigned int)d3 < 256 && (unsigned int)d4 < 256)
113 // parsed a valid ipv4 address
114 address->addresstype = LHNETADDRESSTYPE_INET4;
115 address->addressdata.inet4.family = LHNETADDRESSTYPE_INET4_FAMILY;
116 address->addressdata.inet4.port = htons((unsigned short)port);
117 address->addressdata.inet4.address[0] = (unsigned char)d1;
118 address->addressdata.inet4.address[1] = (unsigned char)d2;
119 address->addressdata.inet4.address[2] = (unsigned char)d3;
120 address->addressdata.inet4.address[3] = (unsigned char)d4;
121 #ifdef STANDALONETEST
122 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));
126 for (i = 0;i < MAX_NAMECACHE;i++)
127 if (!strcmp(namecache[i].name, name))
129 if (i < MAX_NAMECACHE)
131 *address = namecache[i].address;
132 if (address->addresstype == LHNETADDRESSTYPE_INET6)
134 address->addressdata.inet6.port = htons((unsigned short)port);
137 else if (address->addresstype == LHNETADDRESSTYPE_INET4)
139 address->addressdata.inet4.port = htons((unsigned short)port);
144 // try gethostbyname (handles dns and other ip formats)
145 hostentry = gethostbyname(name);
148 if (hostentry->h_addrtype == LHNETADDRESSTYPE_INET6_FAMILY)
151 address->addresstype = LHNETADDRESSTYPE_INET6;
152 address->addressdata.inet6.family = hostentry->h_addrtype;
153 address->addressdata.inet6.port = htons((unsigned short)port);
154 memcpy(address->addressdata.inet6.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet6.address));
155 for (i = 0;i < sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
156 namecache[namecacheposition].name[i] = name[i];
157 namecache[namecacheposition].name[i] = 0;
158 namecache[namecacheposition].address = *address;
159 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
160 #ifdef STANDALONETEST
161 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));
165 else if (hostentry->h_addrtype == LHNETADDRESSTYPE_INET4_FAMILY)
168 address->addresstype = LHNETADDRESSTYPE_INET4;
169 address->addressdata.inet4.family = hostentry->h_addrtype;
170 address->addressdata.inet4.port = htons((unsigned short)port);
171 memcpy(address->addressdata.inet4.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet4.address));
172 for (i = 0;i < sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
173 namecache[namecacheposition].name[i] = name[i];
174 namecache[namecacheposition].name[i] = 0;
175 namecache[namecacheposition].address = *address;
176 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
177 #ifdef STANDALONETEST
178 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));
183 #ifdef STANDALONETEST
184 printf("gethostbyname failed on address \"%s\"\n", name);
186 for (i = 0;i < sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
187 namecache[namecacheposition].name[i] = name[i];
188 namecache[namecacheposition].name[i] = 0;
189 namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
190 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
194 int LHNETADDRESS_ToString(const lhnetaddress_t *address, char *string, int stringbuffersize, int includeport)
197 if (!address || !string || stringbuffersize < 1)
199 switch(address->addresstype)
203 case LHNETADDRESSTYPE_LOOP:
206 if (stringbuffersize >= 12)
208 sprintf(string, "local:%d", (int)address->addressdata.loop.port);
214 if (stringbuffersize >= 6)
216 strcpy(string, "local");
221 case LHNETADDRESSTYPE_INET4:
224 if (stringbuffersize >= 22)
226 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));
232 if (stringbuffersize >= 16)
234 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]);
239 case LHNETADDRESSTYPE_INET6:
242 if (stringbuffersize >= 88)
244 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));
250 if (stringbuffersize >= 80)
252 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]);
261 int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address)
264 return address->addresstype;
266 return LHNETADDRESSTYPE_NONE;
269 int LHNETADDRESS_GetPort(const lhnetaddress_t *address)
273 switch(address->addresstype)
275 case LHNETADDRESSTYPE_LOOP:
276 return address->addressdata.loop.port;
277 case LHNETADDRESSTYPE_INET4:
278 return ntohs(address->addressdata.inet4.port);
279 case LHNETADDRESSTYPE_INET6:
280 return ntohs(address->addressdata.inet6.port);
286 int LHNETADDRESS_SetPort(lhnetaddress_t *address, int port)
290 switch(address->addresstype)
292 case LHNETADDRESSTYPE_LOOP:
293 address->addressdata.loop.port = port;
295 case LHNETADDRESSTYPE_INET4:
296 address->addressdata.inet4.port = htons((unsigned short)port);
298 case LHNETADDRESSTYPE_INET6:
299 address->addressdata.inet6.port = htons((unsigned short)port);
306 int LHNETADDRESS_Compare(const lhnetaddress_t *address1, const lhnetaddress_t *address2)
308 if (!address1 || !address2)
310 if (address1->addresstype != address2->addresstype)
312 switch(address1->addresstype)
314 case LHNETADDRESSTYPE_LOOP:
315 if (address1->addressdata.loop.port != address2->addressdata.loop.port)
318 case LHNETADDRESSTYPE_INET4:
319 if (address1->addressdata.inet4.family != address2->addressdata.inet4.family)
321 if (memcmp(address1->addressdata.inet4.address, address2->addressdata.inet4.address, sizeof(address1->addressdata.inet4.address)))
323 if (address1->addressdata.inet4.port != address2->addressdata.inet4.port)
326 case LHNETADDRESSTYPE_INET6:
327 if (address1->addressdata.inet6.family != address2->addressdata.inet6.family)
329 if (memcmp(address1->addressdata.inet6.address, address2->addressdata.inet6.address, sizeof(address1->addressdata.inet6.address)))
331 if (address1->addressdata.inet6.port != address2->addressdata.inet6.port)
339 typedef struct lhnetpacket_s
346 #ifndef STANDALONETEST
347 double sentdoubletime;
349 struct lhnetpacket_s *next, *prev;
353 static int lhnet_active;
354 static lhnetsocket_t lhnet_socketlist;
355 static lhnetpacket_t lhnet_packetlist;
357 static int lhnet_didWSAStartup = 0;
358 static WSADATA lhnet_winsockdata;
361 void LHNET_Init(void)
365 lhnet_socketlist.next = lhnet_socketlist.prev = &lhnet_socketlist;
366 lhnet_packetlist.next = lhnet_packetlist.prev = &lhnet_packetlist;
370 void LHNET_Shutdown(void)
375 while (lhnet_socketlist.next != &lhnet_socketlist)
376 LHNET_CloseSocket(lhnet_socketlist.next);
377 while (lhnet_packetlist.next != &lhnet_packetlist)
379 p = lhnet_packetlist.next;
380 p->prev->next = p->next;
381 p->next->prev = p->prev;
387 static const char *LHNETPRIVATE_StrError(void)
390 int i = WSAGetLastError();
393 case WSAEINTR: return "WSAEINTR";
394 case WSAEBADF: return "WSAEBADF";
395 case WSAEACCES: return "WSAEACCES";
396 case WSAEFAULT: return "WSAEFAULT";
397 case WSAEINVAL: return "WSAEINVAL";
398 case WSAEMFILE: return "WSAEMFILE";
399 case WSAEWOULDBLOCK: return "WSAEWOULDBLOCK";
400 case WSAEINPROGRESS: return "WSAEINPROGRESS";
401 case WSAEALREADY: return "WSAEALREADY";
402 case WSAENOTSOCK: return "WSAENOTSOCK";
403 case WSAEDESTADDRREQ: return "WSAEDESTADDRREQ";
404 case WSAEMSGSIZE: return "WSAEMSGSIZE";
405 case WSAEPROTOTYPE: return "WSAEPROTOTYPE";
406 case WSAENOPROTOOPT: return "WSAENOPROTOOPT";
407 case WSAEPROTONOSUPPORT: return "WSAEPROTONOSUPPORT";
408 case WSAESOCKTNOSUPPORT: return "WSAESOCKTNOSUPPORT";
409 case WSAEOPNOTSUPP: return "WSAEOPNOTSUPP";
410 case WSAEPFNOSUPPORT: return "WSAEPFNOSUPPORT";
411 case WSAEAFNOSUPPORT: return "WSAEAFNOSUPPORT";
412 case WSAEADDRINUSE: return "WSAEADDRINUSE";
413 case WSAEADDRNOTAVAIL: return "WSAEADDRNOTAVAIL";
414 case WSAENETDOWN: return "WSAENETDOWN";
415 case WSAENETUNREACH: return "WSAENETUNREACH";
416 case WSAENETRESET: return "WSAENETRESET";
417 case WSAECONNABORTED: return "WSAECONNABORTED";
418 case WSAECONNRESET: return "WSAECONNRESET";
419 case WSAENOBUFS: return "WSAENOBUFS";
420 case WSAEISCONN: return "WSAEISCONN";
421 case WSAENOTCONN: return "WSAENOTCONN";
422 case WSAESHUTDOWN: return "WSAESHUTDOWN";
423 case WSAETOOMANYREFS: return "WSAETOOMANYREFS";
424 case WSAETIMEDOUT: return "WSAETIMEDOUT";
425 case WSAECONNREFUSED: return "WSAECONNREFUSED";
426 case WSAELOOP: return "WSAELOOP";
427 case WSAENAMETOOLONG: return "WSAENAMETOOLONG";
428 case WSAEHOSTDOWN: return "WSAEHOSTDOWN";
429 case WSAEHOSTUNREACH: return "WSAEHOSTUNREACH";
430 case WSAENOTEMPTY: return "WSAENOTEMPTY";
431 case WSAEPROCLIM: return "WSAEPROCLIM";
432 case WSAEUSERS: return "WSAEUSERS";
433 case WSAEDQUOT: return "WSAEDQUOT";
434 case WSAESTALE: return "WSAESTALE";
435 case WSAEREMOTE: return "WSAEREMOTE";
436 case WSAEDISCON: return "WSAEDISCON";
437 case 0: return "no error";
438 default: return "unknown WSAE error";
441 return strerror(errno);
445 lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
447 lhnetsocket_t *lhnetsocket, *s;
450 lhnetsocket = Z_Malloc(sizeof(*lhnetsocket));
453 memset(lhnetsocket, 0, sizeof(*lhnetsocket));
454 lhnetsocket->address = *address;
455 switch(lhnetsocket->address.addresstype)
457 case LHNETADDRESSTYPE_LOOP:
458 if (lhnetsocket->address.addressdata.loop.port == 0)
460 // allocate a port dynamically
461 // this search will always terminate because there is never
462 // an allocated socket with port 0, so if the number wraps it
463 // will find the port is unused, and then refuse to use port
464 // 0, causing an intentional failure condition
465 lhnetsocket->address.addressdata.loop.port = 1024;
468 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
469 if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.addressdata.loop.port == lhnetsocket->address.addressdata.loop.port)
471 if (s == &lhnet_socketlist)
473 lhnetsocket->address.addressdata.loop.port++;
476 // check if the port is available
477 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
478 if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.addressdata.loop.port == lhnetsocket->address.addressdata.loop.port)
480 if (s == &lhnet_socketlist && lhnetsocket->address.addressdata.loop.port != 0)
482 lhnetsocket->next = &lhnet_socketlist;
483 lhnetsocket->prev = lhnetsocket->next->prev;
484 lhnetsocket->next->prev = lhnetsocket;
485 lhnetsocket->prev->next = lhnetsocket;
489 case LHNETADDRESSTYPE_INET4:
490 case LHNETADDRESSTYPE_INET6:
492 if (lhnet_didWSAStartup || (lhnet_didWSAStartup = !WSAStartup(MAKEWORD(1, 1), &lhnet_winsockdata)))
495 if ((lhnetsocket->inetsocket = socket(address->addresstype == LHNETADDRESSTYPE_INET6 ? LHNETADDRESSTYPE_INET6_FAMILY : LHNETADDRESSTYPE_INET4_FAMILY, SOCK_DGRAM, IPPROTO_UDP)) != -1)
499 if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
502 if (ioctl(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
510 namelen = address->addresstype == LHNETADDRESSTYPE_INET6 ? sizeof(lhnetsocket->address.addressdata.inet6) : sizeof(lhnetsocket->address.addressdata.inet4);
511 if (bind(lhnetsocket->inetsocket, (void *)&lhnetsocket->address.addressdata, namelen) != -1)
514 getsockname(lhnetsocket->inetsocket, (void *)&lhnetsocket->address.addressdata, &namelen);
515 // enable broadcast on this socket
516 setsockopt(lhnetsocket->inetsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i));
517 lhnetsocket->next = &lhnet_socketlist;
518 lhnetsocket->prev = lhnetsocket->next->prev;
519 lhnetsocket->next->prev = lhnetsocket;
520 lhnetsocket->prev->next = lhnetsocket;
524 Con_Printf("LHNET_OpenSocket_Connectionless: bind returned error: %s\n", LHNETPRIVATE_StrError());
527 Con_Printf("LHNET_OpenSocket_Connectionless: ioctlsocket returned error: %s\n", LHNETPRIVATE_StrError());
529 closesocket(lhnetsocket->inetsocket);
531 close(lhnetsocket->inetsocket);
535 Con_Printf("LHNET_OpenSocket_Connectionless: socket returned error: %s\n", LHNETPRIVATE_StrError());
539 Con_Print("LHNET_OpenSocket_Connectionless: WSAStartup failed\n");
550 void LHNET_CloseSocket(lhnetsocket_t *lhnetsocket)
554 // unlink from socket list
555 if (lhnetsocket->next == NULL)
557 lhnetsocket->next->prev = lhnetsocket->prev;
558 lhnetsocket->prev->next = lhnetsocket->next;
559 lhnetsocket->next = NULL;
560 lhnetsocket->prev = NULL;
562 // no special close code for loopback, just inet
563 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4 || lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
566 closesocket(lhnetsocket->inetsocket);
568 close(lhnetsocket->inetsocket);
572 if (lhnet_socketlist.next == &lhnet_socketlist && lhnet_didWSAStartup)
574 lhnet_didWSAStartup = 0;
582 lhnetaddress_t *LHNET_AddressFromSocket(lhnetsocket_t *sock)
585 return &sock->address;
590 int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *address)
593 if (!lhnetsocket || !address || !content || maxcontentlength < 1)
595 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
598 lhnetpacket_t *p, *pnext;
599 // scan for any old packets to timeout while searching for a packet
600 // that is waiting to be delivered to this socket
601 currenttime = time(NULL);
602 for (p = lhnet_packetlist.next;p != &lhnet_packetlist;p = pnext)
605 if (p->timeout < currenttime)
608 p->next->prev = p->prev;
609 p->prev->next = p->next;
613 #ifndef STANDALONETEST
614 if (cl_netlocalping.value && (Sys_DoubleTime() - cl_netlocalping.value * (1.0 / 2000.0)) < p->sentdoubletime)
617 if (value == 0 && p->destinationport == lhnetsocket->address.addressdata.loop.port)
619 if (p->length <= maxcontentlength)
621 *address = lhnetsocket->address;
622 address->addressdata.loop.port = p->sourceport;
623 memcpy(content, p->data, p->length);
629 p->next->prev = p->prev;
630 p->prev->next = p->next;
635 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
637 int inetaddresslength;
638 address->addresstype = LHNETADDRESSTYPE_NONE;
639 inetaddresslength = sizeof(address->addressdata.inet4);
640 value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, (struct sockaddr *)&address->addressdata.inet4, &inetaddresslength);
643 address->addresstype = LHNETADDRESSTYPE_INET4;
646 else if (value == -1)
649 int e = WSAGetLastError();
650 if (e == WSAEWOULDBLOCK)
654 case WSAECONNREFUSED:
655 Con_Print("Connection refused\n");
659 if (errno == EWOULDBLOCK)
664 Con_Print("Connection refused\n");
670 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
672 int inetaddresslength;
673 address->addresstype = LHNETADDRESSTYPE_NONE;
674 inetaddresslength = sizeof(address->addressdata.inet6);
675 value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, (struct sockaddr *)&address->addressdata.inet6, &inetaddresslength);
678 address->addresstype = LHNETADDRESSTYPE_INET6;
681 else if (value == -1)
684 int e = WSAGetLastError();
685 if (e == WSAEWOULDBLOCK)
689 case WSAECONNREFUSED:
690 Con_Print("Connection refused\n");
694 if (errno == EWOULDBLOCK)
699 Con_Print("Connection refused\n");
708 int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentlength, const lhnetaddress_t *address)
711 if (!lhnetsocket || !address || !content || contentlength < 1)
713 if (lhnetsocket->address.addresstype != address->addresstype)
715 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
718 p = Z_Malloc(sizeof(*p) + contentlength);
719 p->data = (void *)(p + 1);
720 memcpy(p->data, content, contentlength);
721 p->length = contentlength;
722 p->sourceport = lhnetsocket->address.addressdata.loop.port;
723 p->destinationport = address->addressdata.loop.port;
724 p->timeout = time(NULL) + 10;
725 p->next = &lhnet_packetlist;
726 p->prev = p->next->prev;
729 #ifndef STANDALONETEST
730 p->sentdoubletime = Sys_DoubleTime();
732 value = contentlength;
734 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
736 value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addressdata.inet4, sizeof(address->addressdata.inet4));
740 int e = WSAGetLastError();
741 if (e == WSAEWOULDBLOCK)
744 if (errno == EWOULDBLOCK)
749 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
751 value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addressdata.inet6, sizeof(address->addressdata.inet6));
755 int e = WSAGetLastError();
756 if (e == WSAEWOULDBLOCK)
759 if (errno == EWOULDBLOCK)
767 #ifdef STANDALONETEST
768 int main(int argc, char **argv)
770 lhnetsocket_t *sock[16], *sendsock;
779 int sendmessagelength;
780 lhnetaddress_t destaddress;
781 lhnetaddress_t receiveaddress;
782 lhnetaddress_t sockaddress[16];
783 char buffer[1536], addressstring[128], addressstring2[128];
784 if ((argc == 2 || argc == 5) && (port = atoi(argv[1])) >= 1 && port < 65535)
786 printf("calling LHNET_Init()\n");
790 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_LOOP, port);
791 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET4, port);
792 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET6, port+1);
796 sendmessagelength = 0;
798 for (i = 0;i < numsockets;i++)
800 LHNETADDRESS_ToString(&sockaddress[i], addressstring, sizeof(addressstring), 1);
801 printf("calling LHNET_OpenSocket_Connectionless(<%s>)\n", addressstring);
802 if ((sock[i] = LHNET_OpenSocket_Connectionless(&sockaddress[i])))
804 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
805 printf("opened socket successfully (address \"%s\")\n", addressstring2);
809 printf("failed to open socket\n");
820 count = atoi(argv[2]);
821 if (LHNETADDRESS_FromString(&destaddress, argv[3], -1))
823 sendmessage = argv[4];
824 sendmessagelength = strlen(sendmessage);
826 for (i = 0;i < numsockets;i++)
827 if (sock[i] && LHNETADDRESS_GetAddressType(&destaddress) == LHNETADDRESS_GetAddressType(&sockaddress[i]))
829 if (sendsock == NULL)
831 printf("Could not find an open socket matching the addresstype (%i) of destination address, switching to listen only mode\n", LHNETADDRESS_GetAddressType(&destaddress));
837 printf("LHNETADDRESS_FromString did not like the address \"%s\", switching to listen only mode\n", argv[3]);
841 printf("started, now listening for \"exit\" on the opened sockets\n");
842 oldtime = time(NULL);
850 for (i = 0;i < numsockets;i++)
854 length = LHNET_Read(sock[i], buffer, sizeof(buffer), &receiveaddress);
856 printf("localsock read error: length < 0");
857 else if (length > 0 && length < (int)sizeof(buffer))
860 LHNETADDRESS_ToString(&receiveaddress, addressstring, sizeof(addressstring), 1);
861 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
862 printf("received message \"%s\" from \"%s\" on socket \"%s\"\n", buffer, addressstring, addressstring2);
863 if (!strcmp(buffer, "exit"))
870 if (argc == 5 && count > 0)
872 newtime = time(NULL);
873 if (newtime != oldtime)
875 LHNETADDRESS_ToString(&destaddress, addressstring, sizeof(addressstring), 1);
876 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sendsock), addressstring2, sizeof(addressstring2), 1);
877 printf("calling LHNET_Write(<%s>, \"%s\", %i, <%s>)\n", addressstring2, sendmessage, sendmessagelength, addressstring);
878 length = LHNET_Write(sendsock, sendmessage, sendmessagelength, &destaddress);
879 if (length == sendmessagelength)
880 printf("sent successfully\n");
882 printf("LH_Write failed, returned %i (length of message was %i)\n", length, strlen(argv[4]));
886 printf("Done sending, still listening for \"exit\"\n");
890 for (i = 0;i < numsockets;i++)
894 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
895 printf("calling LHNET_CloseSocket(<%s>)\n", addressstring2);
896 LHNET_CloseSocket(sock[i]);
899 printf("calling LHNET_Shutdown()\n");
903 printf("Testing code for lhnet.c\nusage: lhnettest <localportnumber> [<sendnumberoftimes> <sendaddress:port> <sendmessage>]\n");