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 static 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, ':');
392 if (colon && (colon == strchr(string, ':') || (string[0] == '[' && colon - string > 0 && colon[-1] == ']')))
393 // EITHER: colon is the ONLY colon OR: colon comes after [...] delimited IPv6 address
394 // fixes misparsing of IPv6 addresses without port
396 port = atoi(colon + 1);
399 colon = string + strlen(string);
402 namelen = colon - string;
405 if (string[0] == '[' && namelen > 0 && string[namelen-1] == ']') // ipv6
410 memcpy(name, string, namelen);
413 if (!strcmp(name, "local"))
415 address->addresstype = LHNETADDRESSTYPE_LOOP;
416 address->port = port;
419 // try to parse as dotted decimal ipv4 address first
420 // note this supports partial ip addresses
421 d1 = d2 = d3 = d4 = 0;
423 #define sscanf sscanf_s
425 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)
427 // parsed a valid ipv4 address
428 address->addresstype = LHNETADDRESSTYPE_INET4;
429 address->port = port;
430 address->addr.in.sin_family = AF_INET;
431 address->addr.in.sin_port = htons((unsigned short)port);
432 a = (unsigned char *)&address->addr.in.sin_addr;
437 #ifdef STANDALONETEST
438 LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
439 printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %s\n", string, string2);
443 for (i = 0;i < MAX_NAMECACHE;i++)
444 if (!strcmp(namecache[i].name, name))
446 #ifdef STANDALONETEST
447 if (i < MAX_NAMECACHE)
449 if (i < MAX_NAMECACHE && realtime < namecache[i].expirationtime)
452 *address = namecache[i].address;
453 address->port = port;
454 if (address->addresstype == LHNETADDRESSTYPE_INET6)
457 address->addr.in6.sin6_port = htons((unsigned short)port);
461 else if (address->addresstype == LHNETADDRESSTYPE_INET4)
463 address->addr.in.sin_port = htons((unsigned short)port);
468 // try gethostbyname (handles dns and other ip formats)
469 hostentry = gethostbyname(name);
472 if (hostentry->h_addrtype == AF_INET6)
476 address->addresstype = LHNETADDRESSTYPE_INET6;
477 address->port = port;
478 address->addr.in6.sin6_family = hostentry->h_addrtype;
479 address->addr.in6.sin6_port = htons((unsigned short)port);
480 memcpy(&address->addr.in6.sin6_addr, hostentry->h_addr_list[0], sizeof(address->addr.in6.sin6_addr));
481 for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
482 namecache[namecacheposition].name[i] = name[i];
483 namecache[namecacheposition].name[i] = 0;
484 #ifndef STANDALONETEST
485 namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
487 namecache[namecacheposition].address = *address;
488 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
489 #ifdef STANDALONETEST
490 LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
491 printf("gethostbyname(\"%s\") returned ipv6 address %s\n", string, string2);
496 else if (hostentry->h_addrtype == AF_INET)
499 address->addresstype = LHNETADDRESSTYPE_INET4;
500 address->port = port;
501 address->addr.in.sin_family = hostentry->h_addrtype;
502 address->addr.in.sin_port = htons((unsigned short)port);
503 memcpy(&address->addr.in.sin_addr, hostentry->h_addr_list[0], sizeof(address->addr.in.sin_addr));
504 for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
505 namecache[namecacheposition].name[i] = name[i];
506 namecache[namecacheposition].name[i] = 0;
507 #ifndef STANDALONETEST
508 namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
510 namecache[namecacheposition].address = *address;
511 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
512 #ifdef STANDALONETEST
513 LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
514 printf("gethostbyname(\"%s\") returned ipv4 address %s\n", string, string2);
519 #ifdef STANDALONETEST
520 printf("gethostbyname failed on address \"%s\"\n", name);
522 for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
523 namecache[namecacheposition].name[i] = name[i];
524 namecache[namecacheposition].name[i] = 0;
525 #ifndef STANDALONETEST
526 namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
528 namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
529 namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
534 int LHNETADDRESS_ToString(const lhnetaddress_t *vaddress, char *string, int stringbuffersize, int includeport)
536 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
537 const unsigned char *a;
538 if (!address || !string || stringbuffersize < 1)
541 switch(address->addresstype)
545 case LHNETADDRESSTYPE_LOOP:
548 if (stringbuffersize >= 12)
550 dpsnprintf(string, stringbuffersize, "local:%d", address->port);
556 if (stringbuffersize >= 6)
558 memcpy(string, "local", 6);
563 case LHNETADDRESSTYPE_INET4:
564 a = (const unsigned char *)(&address->addr.in.sin_addr);
567 if (stringbuffersize >= 22)
569 dpsnprintf(string, stringbuffersize, "%d.%d.%d.%d:%d", a[0], a[1], a[2], a[3], address->port);
575 if (stringbuffersize >= 16)
577 dpsnprintf(string, stringbuffersize, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
583 case LHNETADDRESSTYPE_INET6:
584 a = (const unsigned char *)(&address->addr.in6.sin6_addr);
587 if (stringbuffersize >= 88)
589 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);
595 if (stringbuffersize >= 80)
597 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]);
607 int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address)
610 return address->addresstype;
612 return LHNETADDRESSTYPE_NONE;
615 const char *LHNETADDRESS_GetInterfaceName(const lhnetaddress_t *vaddress, char *ifname, size_t ifnamelength)
618 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
620 if (address && address->addresstype == LHNETADDRESSTYPE_INET6)
624 if (if_indextoname(address->addr.in6.sin6_scope_id, ifname) == ifname)
629 // The Win32 API doesn't have if_indextoname() until Windows Vista,
630 // but luckily it just uses the interface ID as the interface name
632 if (dpsnprintf(ifname, ifnamelength, "%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;
726 static int lhnet_default_dscp = 0;
728 static int lhnet_didWSAStartup = 0;
729 static WSADATA lhnet_winsockdata;
732 void LHNET_Init(void)
736 lhnet_socketlist.next = lhnet_socketlist.prev = &lhnet_socketlist;
737 lhnet_packetlist.next = lhnet_packetlist.prev = &lhnet_packetlist;
740 lhnet_didWSAStartup = !WSAStartup(MAKEWORD(1, 1), &lhnet_winsockdata);
741 if (!lhnet_didWSAStartup)
742 Con_Print("LHNET_Init: WSAStartup failed, networking disabled\n");
746 int LHNET_DefaultDSCP(int dscp)
749 int prev = lhnet_default_dscp;
751 lhnet_default_dscp = dscp;
758 void LHNET_Shutdown(void)
763 while (lhnet_socketlist.next != &lhnet_socketlist)
764 LHNET_CloseSocket(lhnet_socketlist.next);
765 while (lhnet_packetlist.next != &lhnet_packetlist)
767 p = lhnet_packetlist.next;
768 p->prev->next = p->next;
769 p->next->prev = p->prev;
773 if (lhnet_didWSAStartup)
775 lhnet_didWSAStartup = 0;
782 static const char *LHNETPRIVATE_StrError(void)
785 int i = WSAGetLastError();
788 case WSAEINTR: return "WSAEINTR";
789 case WSAEBADF: return "WSAEBADF";
790 case WSAEACCES: return "WSAEACCES";
791 case WSAEFAULT: return "WSAEFAULT";
792 case WSAEINVAL: return "WSAEINVAL";
793 case WSAEMFILE: return "WSAEMFILE";
794 case WSAEWOULDBLOCK: return "WSAEWOULDBLOCK";
795 case WSAEINPROGRESS: return "WSAEINPROGRESS";
796 case WSAEALREADY: return "WSAEALREADY";
797 case WSAENOTSOCK: return "WSAENOTSOCK";
798 case WSAEDESTADDRREQ: return "WSAEDESTADDRREQ";
799 case WSAEMSGSIZE: return "WSAEMSGSIZE";
800 case WSAEPROTOTYPE: return "WSAEPROTOTYPE";
801 case WSAENOPROTOOPT: return "WSAENOPROTOOPT";
802 case WSAEPROTONOSUPPORT: return "WSAEPROTONOSUPPORT";
803 case WSAESOCKTNOSUPPORT: return "WSAESOCKTNOSUPPORT";
804 case WSAEOPNOTSUPP: return "WSAEOPNOTSUPP";
805 case WSAEPFNOSUPPORT: return "WSAEPFNOSUPPORT";
806 case WSAEAFNOSUPPORT: return "WSAEAFNOSUPPORT";
807 case WSAEADDRINUSE: return "WSAEADDRINUSE";
808 case WSAEADDRNOTAVAIL: return "WSAEADDRNOTAVAIL";
809 case WSAENETDOWN: return "WSAENETDOWN";
810 case WSAENETUNREACH: return "WSAENETUNREACH";
811 case WSAENETRESET: return "WSAENETRESET";
812 case WSAECONNABORTED: return "WSAECONNABORTED";
813 case WSAECONNRESET: return "WSAECONNRESET";
814 case WSAENOBUFS: return "WSAENOBUFS";
815 case WSAEISCONN: return "WSAEISCONN";
816 case WSAENOTCONN: return "WSAENOTCONN";
817 case WSAESHUTDOWN: return "WSAESHUTDOWN";
818 case WSAETOOMANYREFS: return "WSAETOOMANYREFS";
819 case WSAETIMEDOUT: return "WSAETIMEDOUT";
820 case WSAECONNREFUSED: return "WSAECONNREFUSED";
821 case WSAELOOP: return "WSAELOOP";
822 case WSAENAMETOOLONG: return "WSAENAMETOOLONG";
823 case WSAEHOSTDOWN: return "WSAEHOSTDOWN";
824 case WSAEHOSTUNREACH: return "WSAEHOSTUNREACH";
825 case WSAENOTEMPTY: return "WSAENOTEMPTY";
826 case WSAEPROCLIM: return "WSAEPROCLIM";
827 case WSAEUSERS: return "WSAEUSERS";
828 case WSAEDQUOT: return "WSAEDQUOT";
829 case WSAESTALE: return "WSAESTALE";
830 case WSAEREMOTE: return "WSAEREMOTE";
831 case WSAEDISCON: return "WSAEDISCON";
832 case 0: return "no error";
833 default: return "unknown WSAE error";
836 return strerror(errno);
840 void LHNET_SleepUntilPacket_Microseconds(int microseconds)
849 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
851 if (s->address.addresstype == LHNETADDRESSTYPE_INET4 || s->address.addresstype == LHNETADDRESSTYPE_INET6)
853 if (lastfd < s->inetsocket)
854 lastfd = s->inetsocket;
855 #if defined(WIN32) && !defined(_MSC_VER)
856 FD_SET((int)s->inetsocket, &fdreadset);
858 FD_SET((unsigned int)s->inetsocket, &fdreadset);
862 tv.tv_sec = microseconds / 1000000;
863 tv.tv_usec = microseconds % 1000000;
864 select(lastfd + 1, &fdreadset, NULL, NULL, &tv);
866 Sys_Sleep(microseconds);
870 lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
872 lhnetsocket_t *lhnetsocket, *s;
875 lhnetsocket = (lhnetsocket_t *)Z_Malloc(sizeof(*lhnetsocket));
878 memset(lhnetsocket, 0, sizeof(*lhnetsocket));
879 lhnetsocket->address = *address;
880 switch(lhnetsocket->address.addresstype)
882 case LHNETADDRESSTYPE_LOOP:
883 if (lhnetsocket->address.port == 0)
885 // allocate a port dynamically
886 // this search will always terminate because there is never
887 // an allocated socket with port 0, so if the number wraps it
888 // will find the port is unused, and then refuse to use port
889 // 0, causing an intentional failure condition
890 lhnetsocket->address.port = 1024;
893 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
894 if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.port == lhnetsocket->address.port)
896 if (s == &lhnet_socketlist)
898 lhnetsocket->address.port++;
901 // check if the port is available
902 for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
903 if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.port == lhnetsocket->address.port)
905 if (s == &lhnet_socketlist && lhnetsocket->address.port != 0)
907 lhnetsocket->next = &lhnet_socketlist;
908 lhnetsocket->prev = lhnetsocket->next->prev;
909 lhnetsocket->next->prev = lhnetsocket;
910 lhnetsocket->prev->next = lhnetsocket;
914 case LHNETADDRESSTYPE_INET4:
916 case LHNETADDRESSTYPE_INET6:
919 if (lhnet_didWSAStartup)
923 if ((lhnetsocket->inetsocket = socket(address->addresstype == LHNETADDRESSTYPE_INET6 ? PF_INET6 : PF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
925 if ((lhnetsocket->inetsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
939 if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
943 // We need to set this flag to tell the OS that we only listen on IPv6. If we don't
944 // most OSes will create a dual-protocol socket that also listens on IPv4. In this case
945 // if an IPv4 socket is already bound to the port we want, our bind() call will fail.
947 if (address->addresstype != LHNETADDRESSTYPE_INET6
948 || setsockopt (lhnetsocket->inetsocket, IPPROTO_IPV6, IPV6_V6ONLY,
949 (const char *)&ipv6_only, sizeof(ipv6_only)) == 0
951 // The Win32 API only supports IPV6_V6ONLY since Windows Vista, but fortunately
952 // the default value is what we want on Win32 anyway (IPV6_V6ONLY = true)
953 || SOCKETERRNO == WSAENOPROTOOPT
958 lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
962 #if defined(SOL_RFC1149) && defined(RFC1149_1149ONLY)
963 // we got reports of massive lags when this protocol was chosen as transport
964 // so better turn it off
967 int rfc1149enabled = 0;
968 if(setsockopt(lhnetsocket->inetsocket, SOL_RFC1149, RFC1149_1149ONLY, &rfc1149only))
969 Con_Printf("LHNET_OpenSocket_Connectionless: warning: setsockopt(RFC1149_1149ONLY) returned error: %s\n", LHNETPRIVATE_StrError());
970 if(setsockopt(lhnetsocket->inetsocket, SOL_RFC1149, RFC1149_ENABLED, &rfc1149enabled))
971 Con_Printf("LHNET_OpenSocket_Connectionless: warning: setsockopt(RFC1149_ENABLED) returned error: %s\n", LHNETPRIVATE_StrError());
976 if (address->addresstype == LHNETADDRESSTYPE_INET6)
978 namelen = sizeof(localaddress->addr.in6);
979 bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
980 if (bindresult != -1)
982 if (getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen))
984 // If getsockname failed, we can assume the bound socket is useless.
992 namelen = sizeof(localaddress->addr.in);
993 bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
994 if (bindresult != -1)
996 if (getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen))
998 // If getsockname failed, we can assume the bound socket is useless.
1003 if (bindresult != -1)
1006 // enable broadcast on this socket
1007 setsockopt(lhnetsocket->inetsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i));
1010 // enable DSCP for ToS support
1011 int tos = lhnet_default_dscp << 2;
1012 if (setsockopt(lhnetsocket->inetsocket, IPPROTO_IP, IP_TOS, (char *) &tos, sizeof(tos)))
1014 // Error in setsockopt - fine, we'll simply set no TOS then.
1018 lhnetsocket->next = &lhnet_socketlist;
1019 lhnetsocket->prev = lhnetsocket->next->prev;
1020 lhnetsocket->next->prev = lhnetsocket;
1021 lhnetsocket->prev->next = lhnetsocket;
1023 if (ioctlsocket(lhnetsocket->inetsocket, SIO_UDP_CONNRESET, &_false) == -1)
1024 Con_DPrintf("LHNET_OpenSocket_Connectionless: ioctlsocket SIO_UDP_CONNRESET returned error: %s\n", LHNETPRIVATE_StrError());
1029 Con_Printf("LHNET_OpenSocket_Connectionless: bind returned error: %s\n", LHNETPRIVATE_StrError());
1033 Con_Printf("LHNET_OpenSocket_Connectionless: setsockopt(IPV6_V6ONLY) returned error: %s\n", LHNETPRIVATE_StrError());
1037 Con_Printf("LHNET_OpenSocket_Connectionless: ioctlsocket returned error: %s\n", LHNETPRIVATE_StrError());
1038 closesocket(lhnetsocket->inetsocket);
1041 Con_Printf("LHNET_OpenSocket_Connectionless: socket returned error: %s\n", LHNETPRIVATE_StrError());
1045 Con_Print("LHNET_OpenSocket_Connectionless: can't open a socket (WSAStartup failed during LHNET_Init)\n");
1051 Z_Free(lhnetsocket);
1056 void LHNET_CloseSocket(lhnetsocket_t *lhnetsocket)
1060 // unlink from socket list
1061 if (lhnetsocket->next == NULL)
1063 lhnetsocket->next->prev = lhnetsocket->prev;
1064 lhnetsocket->prev->next = lhnetsocket->next;
1065 lhnetsocket->next = NULL;
1066 lhnetsocket->prev = NULL;
1068 // no special close code for loopback, just inet
1069 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4 || lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
1071 closesocket(lhnetsocket->inetsocket);
1073 Z_Free(lhnetsocket);
1077 lhnetaddress_t *LHNET_AddressFromSocket(lhnetsocket_t *sock)
1080 return &sock->address;
1085 int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *vaddress)
1087 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
1089 if (!lhnetsocket || !address || !content || maxcontentlength < 1)
1091 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
1094 lhnetpacket_t *p, *pnext;
1095 // scan for any old packets to timeout while searching for a packet
1096 // that is waiting to be delivered to this socket
1097 currenttime = time(NULL);
1098 for (p = lhnet_packetlist.next;p != &lhnet_packetlist;p = pnext)
1101 if (p->timeout < currenttime)
1104 p->next->prev = p->prev;
1105 p->prev->next = p->next;
1109 #ifndef STANDALONETEST
1110 if (cl_netlocalping.value && (realtime - cl_netlocalping.value * (1.0 / 2000.0)) < p->sentdoubletime)
1113 if (value == 0 && p->destinationport == lhnetsocket->address.port)
1115 if (p->length <= maxcontentlength)
1117 lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
1118 *address = *localaddress;
1119 address->port = p->sourceport;
1120 memcpy(content, p->data, p->length);
1126 p->next->prev = p->prev;
1127 p->prev->next = p->next;
1132 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
1134 SOCKLEN_T inetaddresslength;
1135 address->addresstype = LHNETADDRESSTYPE_NONE;
1136 inetaddresslength = sizeof(address->addr.in);
1137 value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, LHNET_RECVFROM_FLAGS, &address->addr.sock, &inetaddresslength);
1140 address->addresstype = LHNETADDRESSTYPE_INET4;
1141 address->port = ntohs(address->addr.in.sin_port);
1146 int e = SOCKETERRNO;
1147 if (e == EWOULDBLOCK)
1152 Con_Print("Connection refused\n");
1155 Con_DPrintf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
1159 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
1161 SOCKLEN_T inetaddresslength;
1162 address->addresstype = LHNETADDRESSTYPE_NONE;
1163 inetaddresslength = sizeof(address->addr.in6);
1164 value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, LHNET_RECVFROM_FLAGS, &address->addr.sock, &inetaddresslength);
1167 address->addresstype = LHNETADDRESSTYPE_INET6;
1168 address->port = ntohs(address->addr.in6.sin6_port);
1171 else if (value == -1)
1173 int e = SOCKETERRNO;
1174 if (e == EWOULDBLOCK)
1179 Con_Print("Connection refused\n");
1182 Con_DPrintf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
1189 int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentlength, const lhnetaddress_t *vaddress)
1191 lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
1193 if (!lhnetsocket || !address || !content || contentlength < 1)
1195 if (lhnetsocket->address.addresstype != address->addresstype)
1197 if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
1200 p = (lhnetpacket_t *)Z_Malloc(sizeof(*p) + contentlength);
1201 p->data = (void *)(p + 1);
1202 memcpy(p->data, content, contentlength);
1203 p->length = contentlength;
1204 p->sourceport = lhnetsocket->address.port;
1205 p->destinationport = address->port;
1206 p->timeout = time(NULL) + 10;
1207 p->next = &lhnet_packetlist;
1208 p->prev = p->next->prev;
1211 #ifndef STANDALONETEST
1212 p->sentdoubletime = realtime;
1214 value = contentlength;
1216 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
1218 value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, LHNET_SENDTO_FLAGS, (struct sockaddr *)&address->addr.in, sizeof(struct sockaddr_in));
1221 if (SOCKETERRNO == EWOULDBLOCK)
1223 Con_DPrintf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
1227 else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
1229 value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, 0, (struct sockaddr *)&address->addr.in6, sizeof(struct sockaddr_in6));
1232 if (SOCKETERRNO == EWOULDBLOCK)
1234 Con_DPrintf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
1241 #ifdef STANDALONETEST
1242 int main(int argc, char **argv)
1245 char *buffer = "test", buffer2[1024];
1246 int blen = strlen(buffer);
1248 lhnetsocket_t *sock1;
1249 lhnetsocket_t *sock2;
1250 lhnetaddress_t myaddy1;
1251 lhnetaddress_t myaddy2;
1252 lhnetaddress_t myaddy3;
1253 lhnetaddress_t localhostaddy1;
1254 lhnetaddress_t localhostaddy2;
1258 printf("calling LHNET_Init\n");
1261 printf("calling LHNET_FromPort twice to create two local addresses\n");
1262 LHNETADDRESS_FromPort(&myaddy1, LHNETADDRESSTYPE_INET4, 4000);
1263 LHNETADDRESS_FromPort(&myaddy2, LHNETADDRESSTYPE_INET4, 4001);
1264 LHNETADDRESS_FromString(&localhostaddy1, "127.0.0.1", 4000);
1265 LHNETADDRESS_FromString(&localhostaddy2, "127.0.0.1", 4001);
1267 printf("calling LHNET_OpenSocket_Connectionless twice to create two local sockets\n");
1268 sock1 = LHNET_OpenSocket_Connectionless(&myaddy1);
1269 sock2 = LHNET_OpenSocket_Connectionless(&myaddy2);
1271 printf("calling LHNET_Write to send a packet from the first socket to the second socket\n");
1272 test1 = LHNET_Write(sock1, buffer, blen, &localhostaddy2);
1273 printf("sleeping briefly\n");
1279 printf("calling LHNET_Read on the second socket to read the packet sent from the first socket\n");
1280 test2 = LHNET_Read(sock2, buffer2, b2len - 1, &myaddy3);
1282 Con_Printf("socket to socket test succeeded\n");
1284 Con_Printf("socket to socket test failed\n");
1287 printf("press any key to exit\n");
1291 printf("calling LHNET_Shutdown\n");
1293 printf("exiting\n");
1296 lhnetsocket_t *sock[16], *sendsock;
1305 int sendmessagelength;
1306 lhnetaddress_t destaddress;
1307 lhnetaddress_t receiveaddress;
1308 lhnetaddress_t sockaddress[16];
1309 char buffer[1536], addressstring[128], addressstring2[128];
1310 if ((argc == 2 || argc == 5) && (port = atoi(argv[1])) >= 1 && port < 65535)
1312 printf("calling LHNET_Init()\n");
1316 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_LOOP, port);
1317 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET4, port);
1318 LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET6, port+1);
1322 sendmessagelength = 0;
1324 for (i = 0;i < numsockets;i++)
1326 LHNETADDRESS_ToString(&sockaddress[i], addressstring, sizeof(addressstring), 1);
1327 printf("calling LHNET_OpenSocket_Connectionless(<%s>)\n", addressstring);
1328 if ((sock[i] = LHNET_OpenSocket_Connectionless(&sockaddress[i])))
1330 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
1331 printf("opened socket successfully (address \"%s\")\n", addressstring2);
1335 printf("failed to open socket\n");
1346 count = atoi(argv[2]);
1347 if (LHNETADDRESS_FromString(&destaddress, argv[3], -1))
1349 sendmessage = argv[4];
1350 sendmessagelength = strlen(sendmessage);
1352 for (i = 0;i < numsockets;i++)
1353 if (sock[i] && LHNETADDRESS_GetAddressType(&destaddress) == LHNETADDRESS_GetAddressType(&sockaddress[i]))
1355 if (sendsock == NULL)
1357 printf("Could not find an open socket matching the addresstype (%i) of destination address, switching to listen only mode\n", LHNETADDRESS_GetAddressType(&destaddress));
1363 printf("LHNETADDRESS_FromString did not like the address \"%s\", switching to listen only mode\n", argv[3]);
1367 printf("started, now listening for \"exit\" on the opened sockets\n");
1368 oldtime = time(NULL);
1376 for (i = 0;i < numsockets;i++)
1380 length = LHNET_Read(sock[i], buffer, sizeof(buffer), &receiveaddress);
1382 printf("localsock read error: length < 0");
1383 else if (length > 0 && length < (int)sizeof(buffer))
1386 LHNETADDRESS_ToString(&receiveaddress, addressstring, sizeof(addressstring), 1);
1387 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
1388 printf("received message \"%s\" from \"%s\" on socket \"%s\"\n", buffer, addressstring, addressstring2);
1389 if (!strcmp(buffer, "exit"))
1396 if (argc == 5 && count > 0)
1398 newtime = time(NULL);
1399 if (newtime != oldtime)
1401 LHNETADDRESS_ToString(&destaddress, addressstring, sizeof(addressstring), 1);
1402 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sendsock), addressstring2, sizeof(addressstring2), 1);
1403 printf("calling LHNET_Write(<%s>, \"%s\", %i, <%s>)\n", addressstring2, sendmessage, sendmessagelength, addressstring);
1404 length = LHNET_Write(sendsock, sendmessage, sendmessagelength, &destaddress);
1405 if (length == sendmessagelength)
1406 printf("sent successfully\n");
1408 printf("LH_Write failed, returned %i (length of message was %i)\n", length, strlen(argv[4]));
1412 printf("Done sending, still listening for \"exit\"\n");
1416 for (i = 0;i < numsockets;i++)
1420 LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
1421 printf("calling LHNET_CloseSocket(<%s>)\n", addressstring2);
1422 LHNET_CloseSocket(sock[i]);
1425 printf("calling LHNET_Shutdown()\n");
1429 printf("Testing code for lhnet.c\nusage: lhnettest <localportnumber> [<sendnumberoftimes> <sendaddress:port> <sendmessage>]\n");