Logo Search packages:      
Sourcecode: darkplaces version File versions  Download package

lhnet.c

// Written by Forest Hale 2003-06-15 and placed into public domain.

#ifdef WIN32
#ifdef _MSC_VER
#pragma comment(lib, "ws2_32.lib")
#endif
# ifdef SUPPORTIPV6
// Windows XP or higher is required for getaddrinfo, but the inclusion of wspiapi provides fallbacks for older versions
# define _WIN32_WINNT 0x0501
# endif
# include <winsock2.h>
# include <ws2tcpip.h>
# ifdef USE_WSPIAPI_H
#  include <wspiapi.h>
# endif
#endif

#ifndef STANDALONETEST
#include "quakedef.h"
#endif

#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <string.h>
#ifndef WIN32
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#ifdef SUPPORTIPV6
#include <net/if.h>
#endif
#endif

#ifdef __MORPHOS__
#include <proto/socket.h>
#endif

// for Z_Malloc/Z_Free in quake
#ifndef STANDALONETEST
#include "zone.h"
#include "sys.h"
#include "netconn.h"
#else
#define Con_Print printf
#define Con_Printf printf
#define Z_Malloc malloc
#define Z_Free free
#endif

#include "lhnet.h"

#if defined(WIN32)
#define EWOULDBLOCK WSAEWOULDBLOCK
#define ECONNREFUSED WSAECONNREFUSED

#define SOCKETERRNO WSAGetLastError()

#define IOC_VENDOR 0x18000000
#define _WSAIOW(x,y) (IOC_IN|(x)|(y))
#define SIO_UDP_CONNRESET _WSAIOW(IOC_VENDOR,12)

#define SOCKLEN_T int
#elif defined(__MORPHOS__)
#define ioctlsocket IoctlSocket
#define closesocket CloseSocket
#define SOCKETERRNO Errno()

#define SOCKLEN_T int
#else
#define ioctlsocket ioctl
#define closesocket close
#define SOCKETERRNO errno

#define SOCKLEN_T socklen_t
#endif

#ifdef MSG_DONTWAIT
#define LHNET_RECVFROM_FLAGS MSG_DONTWAIT
#define LHNET_SENDTO_FLAGS 0
#else
#define LHNET_RECVFROM_FLAGS 0
#define LHNET_SENDTO_FLAGS 0
#endif

00092 typedef struct lhnetaddressnative_s
{
      lhnetaddresstype_t addresstype;
      int port;
      union
      {
            struct sockaddr sock;
            struct sockaddr_in in;
#ifdef SUPPORTIPV6
            struct sockaddr_in6 in6;
#endif
      }
      addr;
}
lhnetaddressnative_t;

// to make LHNETADDRESS_FromString resolve repeated hostnames faster, cache them
#define MAX_NAMECACHE 64
00110 static struct namecache_s
{
      lhnetaddressnative_t address;
      double expirationtime;
      char name[64];
}
namecache[MAX_NAMECACHE];
static int namecacheposition = 0;

int LHNETADDRESS_FromPort(lhnetaddress_t *vaddress, lhnetaddresstype_t addresstype, int port)
{
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
      if (!address)
            return 0;
      switch(addresstype)
      {
      default:
            break;
      case LHNETADDRESSTYPE_LOOP:
            // local:port  (loopback)
            memset(address, 0, sizeof(*address));
            address->addresstype = LHNETADDRESSTYPE_LOOP;
            address->port = port;
            return 1;
      case LHNETADDRESSTYPE_INET4:
            // 0.0.0.0:port  (INADDR_ANY, binds to all interfaces)
            memset(address, 0, sizeof(*address));
            address->addresstype = LHNETADDRESSTYPE_INET4;
            address->port = port;
            address->addr.in.sin_family = AF_INET;
            address->addr.in.sin_port = htons((unsigned short)port);
            return 1;
#ifdef SUPPORTIPV6
      case LHNETADDRESSTYPE_INET6:
            // [0:0:0:0:0:0:0:0]:port  (IN6ADDR_ANY, binds to all interfaces)
            memset(address, 0, sizeof(*address));
            address->addresstype = LHNETADDRESSTYPE_INET6;
            address->port = port;
            address->addr.in6.sin6_family = AF_INET6;
            address->addr.in6.sin6_port = htons((unsigned short)port);
            return 1;
#endif
      }
      return 0;
}

#ifdef SUPPORTIPV6
int LHNETADDRESS_Resolve(lhnetaddressnative_t *address, const char *name, int port)
{
      char port_buff [16];
      struct addrinfo hints;
      struct addrinfo* addrinf;
      int err;

      dpsnprintf (port_buff, sizeof (port_buff), "%d", port);
      port_buff[sizeof (port_buff) - 1] = '\0';

      memset(&hints, 0, sizeof (hints));
      hints.ai_family = AF_UNSPEC;
      hints.ai_socktype = SOCK_DGRAM;
      //hints.ai_flags = AI_PASSIVE;

      err = getaddrinfo(name, port_buff, &hints, &addrinf);
      if (err != 0 || addrinf == NULL)
            return 0;
      if (addrinf->ai_addr->sa_family != AF_INET6 && addrinf->ai_addr->sa_family != AF_INET)
      {
            freeaddrinfo (addrinf);
            return 0;
      }

      // great it worked
      if (addrinf->ai_addr->sa_family == AF_INET6)
      {
            address->addresstype = LHNETADDRESSTYPE_INET6;
            memcpy(&address->addr.in6, addrinf->ai_addr, sizeof(address->addr.in6));
      }
      else
      {
            address->addresstype = LHNETADDRESSTYPE_INET4;
            memcpy(&address->addr.in, addrinf->ai_addr, sizeof(address->addr.in));
      }
      address->port = port;
      
      freeaddrinfo (addrinf);
      return 1;
}

int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int defaultport)
{
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
      int i, port, d1, d2, d3, d4, resolved;
      size_t namelen;
      unsigned char *a;
      char name[128];
#ifdef STANDALONETEST
      char string2[128];
#endif
      const char* addr_start;
      const char* addr_end = NULL;
      const char* port_name = NULL;
      int addr_family = AF_UNSPEC;

      if (!address || !string || !*string)
            return 0;
      memset(address, 0, sizeof(*address));
      address->addresstype = LHNETADDRESSTYPE_NONE;
      port = 0;

      // If it's a bracketed IPv6 address
      if (string[0] == '[')
      {
            const char* end_bracket = strchr(string, ']');

            if (end_bracket == NULL)
                  return 0;

            if (end_bracket[1] == ':')
                  port_name = end_bracket + 2;
            else if (end_bracket[1] != '\0')
                  return 0;

            addr_family = AF_INET6;
            addr_start = &string[1];
            addr_end = end_bracket;
      }
      else
      {
            const char* first_colon;

            addr_start = string;

            // If it's a numeric non-bracket IPv6 address (-> no port),
            // or it's a numeric IPv4 address, or a name, with a port
            first_colon = strchr(string, ':');
            if (first_colon != NULL)
            {
                  const char* last_colon = strrchr(first_colon + 1, ':');

                  // If it's an numeric IPv4 address, or a name, with a port
                  if (last_colon == NULL)
                  {
                        addr_end = first_colon;
                        port_name = first_colon + 1;
                  }
                  else
                        addr_family = AF_INET6;
            }
      }

      if (addr_end != NULL)
            namelen = addr_end - addr_start;
      else
            namelen = strlen (addr_start);

      if (namelen >= sizeof(name))
            namelen = sizeof(name) - 1;
      memcpy (name, addr_start, namelen);
      name[namelen] = 0;

      if (port_name)
            port = atoi(port_name);

      if (port == 0)
            port = defaultport;

      // handle loopback
      if (!strcmp(name, "local"))
      {
            address->addresstype = LHNETADDRESSTYPE_LOOP;
            address->port = port;
            return 1;
      }
      // try to parse as dotted decimal ipv4 address first
      // note this supports partial ip addresses
      d1 = d2 = d3 = d4 = 0;
#if _MSC_VER >= 1400
#define sscanf sscanf_s
#endif
      if (addr_family != AF_INET6 &&
            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)
      {
            // parsed a valid ipv4 address
            address->addresstype = LHNETADDRESSTYPE_INET4;
            address->port = port;
            address->addr.in.sin_family = AF_INET;
            address->addr.in.sin_port = htons((unsigned short)port);
            a = (unsigned char *)&address->addr.in.sin_addr;
            a[0] = d1;
            a[1] = d2;
            a[2] = d3;
            a[3] = d4;
#ifdef STANDALONETEST
            LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
            printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %s\n", string, string2);
#endif
            return 1;
      }
      for (i = 0;i < MAX_NAMECACHE;i++)
            if (!strcmp(namecache[i].name, name))
                  break;
#ifdef STANDALONETEST
      if (i < MAX_NAMECACHE)
#else
      if (i < MAX_NAMECACHE && realtime < namecache[i].expirationtime)
#endif
      {
            *address = namecache[i].address;
            address->port = port;
            if (address->addresstype == LHNETADDRESSTYPE_INET6)
            {
                  address->addr.in6.sin6_port = htons((unsigned short)port);
                  return 1;
            }
            else if (address->addresstype == LHNETADDRESSTYPE_INET4)
            {
                  address->addr.in.sin_port = htons((unsigned short)port);
                  return 1;
            }
            return 0;
      }

      for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
            namecache[namecacheposition].name[i] = name[i];
      namecache[namecacheposition].name[i] = 0;
#ifndef STANDALONETEST
      namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
#endif

      // try resolving the address (handles dns and other ip formats)
      resolved = LHNETADDRESS_Resolve(address, name, port);
      if (resolved)
      {
#ifdef STANDALONETEST
            const char *protoname;

            switch (address->addresstype)
            {
                  case LHNETADDRESSTYPE_INET6:
                        protoname = "ipv6";
                        break;
                  case LHNETADDRESSTYPE_INET4:
                        protoname = "ipv4";
                        break;
                  default:
                        protoname = "UNKNOWN";
                        break;
            }
            LHNETADDRESS_ToString(vaddress, string2, sizeof(string2), 1);
            Con_Printf("LHNETADDRESS_Resolve(\"%s\") returned %s address %s\n", string, protoname, string2);
#endif
            namecache[namecacheposition].address = *address;
      }
      else
      {
#ifdef STANDALONETEST
            printf("name resolution failed on address \"%s\"\n", name);
#endif
            namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
      }
      
      namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
      return resolved;
}
#else
int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int defaultport)
{
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
      int i, port, namelen, d1, d2, d3, d4;
      struct hostent *hostentry;
      unsigned char *a;
      const char *colon;
      char name[128];
#ifdef STANDALONETEST
      char string2[128];
#endif
      if (!address || !string || !*string)
            return 0;
      memset(address, 0, sizeof(*address));
      address->addresstype = LHNETADDRESSTYPE_NONE;
      port = 0;
      colon = strrchr(string, ':');
      if (colon && (colon == strchr(string, ':') || (string[0] == '[' && colon - string > 0 && colon[-1] == ']')))
      //           EITHER: colon is the ONLY colon  OR: colon comes after [...] delimited IPv6 address
      //           fixes misparsing of IPv6 addresses without port
      {
            port = atoi(colon + 1);
      }
      else
            colon = string + strlen(string);
      if (port == 0)
            port = defaultport;
      namelen = colon - string;
      if (namelen > 127)
            namelen = 127;
      if (string[0] == '[' && namelen > 0 && string[namelen-1] == ']') // ipv6
      {
            string++;
            namelen -= 2;
      }
      memcpy(name, string, namelen);
      name[namelen] = 0;
      // handle loopback
      if (!strcmp(name, "local"))
      {
            address->addresstype = LHNETADDRESSTYPE_LOOP;
            address->port = port;
            return 1;
      }
      // try to parse as dotted decimal ipv4 address first
      // note this supports partial ip addresses
      d1 = d2 = d3 = d4 = 0;
#if _MSC_VER >= 1400
#define sscanf sscanf_s
#endif
      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)
      {
            // parsed a valid ipv4 address
            address->addresstype = LHNETADDRESSTYPE_INET4;
            address->port = port;
            address->addr.in.sin_family = AF_INET;
            address->addr.in.sin_port = htons((unsigned short)port);
            a = (unsigned char *)&address->addr.in.sin_addr;
            a[0] = d1;
            a[1] = d2;
            a[2] = d3;
            a[3] = d4;
#ifdef STANDALONETEST
            LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
            printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %s\n", string, string2);
#endif
            return 1;
      }
      for (i = 0;i < MAX_NAMECACHE;i++)
            if (!strcmp(namecache[i].name, name))
                  break;
#ifdef STANDALONETEST
      if (i < MAX_NAMECACHE)
#else
      if (i < MAX_NAMECACHE && realtime < namecache[i].expirationtime)
#endif
      {
            *address = namecache[i].address;
            address->port = port;
            if (address->addresstype == LHNETADDRESSTYPE_INET6)
            {
#ifdef SUPPORTIPV6
                  address->addr.in6.sin6_port = htons((unsigned short)port);
                  return 1;
#endif
            }
            else if (address->addresstype == LHNETADDRESSTYPE_INET4)
            {
                  address->addr.in.sin_port = htons((unsigned short)port);
                  return 1;
            }
            return 0;
      }
      // try gethostbyname (handles dns and other ip formats)
      hostentry = gethostbyname(name);
      if (hostentry)
      {
            if (hostentry->h_addrtype == AF_INET6)
            {
#ifdef SUPPORTIPV6
                  // great it worked
                  address->addresstype = LHNETADDRESSTYPE_INET6;
                  address->port = port;
                  address->addr.in6.sin6_family = hostentry->h_addrtype;
                  address->addr.in6.sin6_port = htons((unsigned short)port);
                  memcpy(&address->addr.in6.sin6_addr, hostentry->h_addr_list[0], sizeof(address->addr.in6.sin6_addr));
                  for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
                        namecache[namecacheposition].name[i] = name[i];
                  namecache[namecacheposition].name[i] = 0;
#ifndef STANDALONETEST
                  namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
#endif
                  namecache[namecacheposition].address = *address;
                  namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
#ifdef STANDALONETEST
                  LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
                  printf("gethostbyname(\"%s\") returned ipv6 address %s\n", string, string2);
#endif
                  return 1;
#endif
            }
            else if (hostentry->h_addrtype == AF_INET)
            {
                  // great it worked
                  address->addresstype = LHNETADDRESSTYPE_INET4;
                  address->port = port;
                  address->addr.in.sin_family = hostentry->h_addrtype;
                  address->addr.in.sin_port = htons((unsigned short)port);
                  memcpy(&address->addr.in.sin_addr, hostentry->h_addr_list[0], sizeof(address->addr.in.sin_addr));
                  for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
                        namecache[namecacheposition].name[i] = name[i];
                  namecache[namecacheposition].name[i] = 0;
#ifndef STANDALONETEST
                  namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
#endif
                  namecache[namecacheposition].address = *address;
                  namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
#ifdef STANDALONETEST
                  LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
                  printf("gethostbyname(\"%s\") returned ipv4 address %s\n", string, string2);
#endif
                  return 1;
            }
      }
#ifdef STANDALONETEST
      printf("gethostbyname failed on address \"%s\"\n", name);
#endif
      for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
            namecache[namecacheposition].name[i] = name[i];
      namecache[namecacheposition].name[i] = 0;
#ifndef STANDALONETEST
      namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
#endif
      namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
      namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
      return 0;
}
#endif

int LHNETADDRESS_ToString(const lhnetaddress_t *vaddress, char *string, int stringbuffersize, int includeport)
{
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
      const unsigned char *a;
      *string = 0;
      if (!address || !string || stringbuffersize < 1)
            return 0;
      switch(address->addresstype)
      {
      default:
            break;
      case LHNETADDRESSTYPE_LOOP:
            if (includeport)
            {
                  if (stringbuffersize >= 12)
                  {
                        dpsnprintf(string, stringbuffersize, "local:%d", address->port);
                        return 1;
                  }
            }
            else
            {
                  if (stringbuffersize >= 6)
                  {
                        memcpy(string, "local", 6);
                        return 1;
                  }
            }
            break;
      case LHNETADDRESSTYPE_INET4:
            a = (const unsigned char *)(&address->addr.in.sin_addr);
            if (includeport)
            {
                  if (stringbuffersize >= 22)
                  {
                        dpsnprintf(string, stringbuffersize, "%d.%d.%d.%d:%d", a[0], a[1], a[2], a[3], address->port);
                        return 1;
                  }
            }
            else
            {
                  if (stringbuffersize >= 16)
                  {
                        dpsnprintf(string, stringbuffersize, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
                        return 1;
                  }
            }
            break;
#ifdef SUPPORTIPV6
      case LHNETADDRESSTYPE_INET6:
            a = (const unsigned char *)(&address->addr.in6.sin6_addr);
            if (includeport)
            {
                  if (stringbuffersize >= 88)
                  {
                        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);
                        return 1;
                  }
            }
            else
            {
                  if (stringbuffersize >= 80)
                  {
                        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]);
                        return 1;
                  }
            }
            break;
#endif
      }
      return 0;
}

int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address)
{
      if (address)
            return address->addresstype;
      else
            return LHNETADDRESSTYPE_NONE;
}

const char *LHNETADDRESS_GetInterfaceName(const lhnetaddress_t *vaddress)
{
#ifdef SUPPORTIPV6
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;

      if (address && address->addresstype == LHNETADDRESSTYPE_INET6)
      {
#ifndef _WIN32

            static char ifname [IF_NAMESIZE];
            
            if (if_indextoname(address->addr.in6.sin6_scope_id, ifname) == ifname)
                  return ifname;

#else

            // The Win32 API doesn't have if_indextoname() until Windows Vista,
            // but luckily it just uses the interface ID as the interface name

            static char ifname [16];

            if (dpsnprintf(ifname, sizeof(ifname), "%lu", address->addr.in6.sin6_scope_id) > 0)
                  return ifname;

#endif
      }
#endif

      return NULL;
}

int LHNETADDRESS_GetPort(const lhnetaddress_t *address)
{
      if (!address)
            return -1;
      return address->port;
}

int LHNETADDRESS_SetPort(lhnetaddress_t *vaddress, int port)
{
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
      if (!address)
            return 0;
      address->port = port;
      switch(address->addresstype)
      {
      case LHNETADDRESSTYPE_LOOP:
            return 1;
      case LHNETADDRESSTYPE_INET4:
            address->addr.in.sin_port = htons((unsigned short)port);
            return 1;
#ifdef SUPPORTIPV6
      case LHNETADDRESSTYPE_INET6:
            address->addr.in6.sin6_port = htons((unsigned short)port);
            return 1;
#endif
      default:
            return 0;
      }
}

int LHNETADDRESS_Compare(const lhnetaddress_t *vaddress1, const lhnetaddress_t *vaddress2)
{
      lhnetaddressnative_t *address1 = (lhnetaddressnative_t *)vaddress1;
      lhnetaddressnative_t *address2 = (lhnetaddressnative_t *)vaddress2;
      if (!address1 || !address2)
            return 1;
      if (address1->addresstype != address2->addresstype)
            return 1;
      switch(address1->addresstype)
      {
      case LHNETADDRESSTYPE_LOOP:
            if (address1->port != address2->port)
                  return -1;
            return 0;
      case LHNETADDRESSTYPE_INET4:
            if (address1->addr.in.sin_family != address2->addr.in.sin_family)
                  return 1;
            if (memcmp(&address1->addr.in.sin_addr, &address2->addr.in.sin_addr, sizeof(address1->addr.in.sin_addr)))
                  return 1;
            if (address1->port != address2->port)
                  return -1;
            return 0;
#ifdef SUPPORTIPV6
      case LHNETADDRESSTYPE_INET6:
            if (address1->addr.in6.sin6_family != address2->addr.in6.sin6_family)
                  return 1;
            if (memcmp(&address1->addr.in6.sin6_addr, &address2->addr.in6.sin6_addr, sizeof(address1->addr.in6.sin6_addr)))
                  return 1;
            if (address1->port != address2->port)
                  return -1;
            return 0;
#endif
      default:
            return 1;
      }
}

00713 typedef struct lhnetpacket_s
{
      void *data;
      int length;
      int sourceport;
      int destinationport;
      time_t timeout;
#ifndef STANDALONETEST
      double sentdoubletime;
#endif
      struct lhnetpacket_s *next, *prev;
}
lhnetpacket_t;

static int lhnet_active;
static lhnetsocket_t lhnet_socketlist;
static lhnetpacket_t lhnet_packetlist;
#ifdef WIN32
static int lhnet_didWSAStartup = 0;
static WSADATA lhnet_winsockdata;
#endif

void LHNET_Init(void)
{
      if (lhnet_active)
            return;
      lhnet_socketlist.next = lhnet_socketlist.prev = &lhnet_socketlist;
      lhnet_packetlist.next = lhnet_packetlist.prev = &lhnet_packetlist;
      lhnet_active = 1;
#ifdef WIN32
      lhnet_didWSAStartup = !WSAStartup(MAKEWORD(1, 1), &lhnet_winsockdata);
      if (!lhnet_didWSAStartup)
            Con_Print("LHNET_Init: WSAStartup failed, networking disabled\n");
#endif
}

void LHNET_Shutdown(void)
{
      lhnetpacket_t *p;
      if (!lhnet_active)
            return;
      while (lhnet_socketlist.next != &lhnet_socketlist)
            LHNET_CloseSocket(lhnet_socketlist.next);
      while (lhnet_packetlist.next != &lhnet_packetlist)
      {
            p = lhnet_packetlist.next;
            p->prev->next = p->next;
            p->next->prev = p->prev;
            Z_Free(p);
      }
#ifdef WIN32
      if (lhnet_didWSAStartup)
      {
            lhnet_didWSAStartup = 0;
            WSACleanup();
      }
#endif
      lhnet_active = 0;
}

static const char *LHNETPRIVATE_StrError(void)
{
#ifdef WIN32
      int i = WSAGetLastError();
      switch (i)
      {
            case WSAEINTR:           return "WSAEINTR";
            case WSAEBADF:           return "WSAEBADF";
            case WSAEACCES:          return "WSAEACCES";
            case WSAEFAULT:          return "WSAEFAULT";
            case WSAEINVAL:          return "WSAEINVAL";
            case WSAEMFILE:          return "WSAEMFILE";
            case WSAEWOULDBLOCK:     return "WSAEWOULDBLOCK";
            case WSAEINPROGRESS:     return "WSAEINPROGRESS";
            case WSAEALREADY:        return "WSAEALREADY";
            case WSAENOTSOCK:        return "WSAENOTSOCK";
            case WSAEDESTADDRREQ:    return "WSAEDESTADDRREQ";
            case WSAEMSGSIZE:        return "WSAEMSGSIZE";
            case WSAEPROTOTYPE:      return "WSAEPROTOTYPE";
            case WSAENOPROTOOPT:     return "WSAENOPROTOOPT";
            case WSAEPROTONOSUPPORT: return "WSAEPROTONOSUPPORT";
            case WSAESOCKTNOSUPPORT: return "WSAESOCKTNOSUPPORT";
            case WSAEOPNOTSUPP:      return "WSAEOPNOTSUPP";
            case WSAEPFNOSUPPORT:    return "WSAEPFNOSUPPORT";
            case WSAEAFNOSUPPORT:    return "WSAEAFNOSUPPORT";
            case WSAEADDRINUSE:      return "WSAEADDRINUSE";
            case WSAEADDRNOTAVAIL:   return "WSAEADDRNOTAVAIL";
            case WSAENETDOWN:        return "WSAENETDOWN";
            case WSAENETUNREACH:     return "WSAENETUNREACH";
            case WSAENETRESET:       return "WSAENETRESET";
            case WSAECONNABORTED:    return "WSAECONNABORTED";
            case WSAECONNRESET:      return "WSAECONNRESET";
            case WSAENOBUFS:         return "WSAENOBUFS";
            case WSAEISCONN:         return "WSAEISCONN";
            case WSAENOTCONN:        return "WSAENOTCONN";
            case WSAESHUTDOWN:       return "WSAESHUTDOWN";
            case WSAETOOMANYREFS:    return "WSAETOOMANYREFS";
            case WSAETIMEDOUT:       return "WSAETIMEDOUT";
            case WSAECONNREFUSED:    return "WSAECONNREFUSED";
            case WSAELOOP:           return "WSAELOOP";
            case WSAENAMETOOLONG:    return "WSAENAMETOOLONG";
            case WSAEHOSTDOWN:       return "WSAEHOSTDOWN";
            case WSAEHOSTUNREACH:    return "WSAEHOSTUNREACH";
            case WSAENOTEMPTY:       return "WSAENOTEMPTY";
            case WSAEPROCLIM:        return "WSAEPROCLIM";
            case WSAEUSERS:          return "WSAEUSERS";
            case WSAEDQUOT:          return "WSAEDQUOT";
            case WSAESTALE:          return "WSAESTALE";
            case WSAEREMOTE:         return "WSAEREMOTE";
            case WSAEDISCON:         return "WSAEDISCON";
            case 0:                  return "no error";
            default:                 return "unknown WSAE error";
      }
#else
      return strerror(errno);
#endif
}

void LHNET_SleepUntilPacket_Microseconds(int microseconds)
{
#ifdef FD_SET
      fd_set fdreadset;
      struct timeval tv;
      int lastfd;
      lhnetsocket_t *s;
      FD_ZERO(&fdreadset);
      lastfd = 0;
      for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
      {
            if (s->address.addresstype == LHNETADDRESSTYPE_INET4 || s->address.addresstype == LHNETADDRESSTYPE_INET6)
            {
                  if (lastfd < s->inetsocket)
                        lastfd = s->inetsocket;
#if defined(WIN32) && !defined(_MSC_VER)
                  FD_SET((int)s->inetsocket, &fdreadset);
#else
                  FD_SET((unsigned int)s->inetsocket, &fdreadset);
#endif
            }
      }
      tv.tv_sec = microseconds / 1000000;
      tv.tv_usec = microseconds % 1000000;
      select(lastfd + 1, &fdreadset, NULL, NULL, &tv);
#else
      Sys_Sleep(microseconds);
#endif
}

lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
{
      lhnetsocket_t *lhnetsocket, *s;
      if (!address)
            return NULL;
      lhnetsocket = (lhnetsocket_t *)Z_Malloc(sizeof(*lhnetsocket));
      if (lhnetsocket)
      {
            memset(lhnetsocket, 0, sizeof(*lhnetsocket));
            lhnetsocket->address = *address;
            switch(lhnetsocket->address.addresstype)
            {
            case LHNETADDRESSTYPE_LOOP:
                  if (lhnetsocket->address.port == 0)
                  {
                        // allocate a port dynamically
                        // this search will always terminate because there is never
                        // an allocated socket with port 0, so if the number wraps it
                        // will find the port is unused, and then refuse to use port
                        // 0, causing an intentional failure condition
                        lhnetsocket->address.port = 1024;
                        for (;;)
                        {
                              for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
                                    if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.port == lhnetsocket->address.port)
                                          break;
                              if (s == &lhnet_socketlist)
                                    break;
                              lhnetsocket->address.port++;
                        }
                  }
                  // check if the port is available
                  for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
                        if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.port == lhnetsocket->address.port)
                              break;
                  if (s == &lhnet_socketlist && lhnetsocket->address.port != 0)
                  {
                        lhnetsocket->next = &lhnet_socketlist;
                        lhnetsocket->prev = lhnetsocket->next->prev;
                        lhnetsocket->next->prev = lhnetsocket;
                        lhnetsocket->prev->next = lhnetsocket;
                        return lhnetsocket;
                  }
                  break;
            case LHNETADDRESSTYPE_INET4:
#ifdef SUPPORTIPV6
            case LHNETADDRESSTYPE_INET6:
#endif
#ifdef WIN32
                  if (lhnet_didWSAStartup)
                  {
#endif
#ifdef SUPPORTIPV6
                        if ((lhnetsocket->inetsocket = socket(address->addresstype == LHNETADDRESSTYPE_INET6 ? PF_INET6 : PF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
#else
                        if ((lhnetsocket->inetsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
#endif
                        {
#ifdef WIN32
                              u_long _false = 0;
#endif
#ifdef MSG_DONTWAIT
                              if (1)
#else
#ifdef WIN32
                              u_long _true = 1;
#else
                              char _true = 1;
#endif
                              if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
#endif
                              {
#ifdef IPV6_V6ONLY
                                    // We need to set this flag to tell the OS that we only listen on IPv6. If we don't
                                    // most OSes will create a dual-protocol socket that also listens on IPv4. In this case
                                    // if an IPv4 socket is already bound to the port we want, our bind() call will fail.
                                    int ipv6_only = 1;
                                    if (address->addresstype != LHNETADDRESSTYPE_INET6
                                          || setsockopt (lhnetsocket->inetsocket, IPPROTO_IPV6, IPV6_V6ONLY,
                                                               (const char *)&ipv6_only, sizeof(ipv6_only)) == 0
#ifdef WIN32
                                          // The Win32 API only supports IPV6_V6ONLY since Windows Vista, but fortunately
                                          // the default value is what we want on Win32 anyway (IPV6_V6ONLY = true)
                                          || SOCKETERRNO == WSAENOPROTOOPT
#endif
                                          )
#endif
                                    {
                                          lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
                                          SOCKLEN_T namelen;
                                          int bindresult;
#ifdef SUPPORTIPV6
                                          if (address->addresstype == LHNETADDRESSTYPE_INET6)
                                          {
                                                namelen = sizeof(localaddress->addr.in6);
                                                bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
                                                if (bindresult != -1)
                                                      getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
                                          }
                                          else
#endif
                                          {
                                                namelen = sizeof(localaddress->addr.in);
                                                bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
                                                if (bindresult != -1)
                                                      getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
                                          }
                                          if (bindresult != -1)
                                          {
                                                int i = 1;
                                                // enable broadcast on this socket
                                                setsockopt(lhnetsocket->inetsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i));
                                                lhnetsocket->next = &lhnet_socketlist;
                                                lhnetsocket->prev = lhnetsocket->next->prev;
                                                lhnetsocket->next->prev = lhnetsocket;
                                                lhnetsocket->prev->next = lhnetsocket;
#ifdef WIN32
                                                if (ioctlsocket(lhnetsocket->inetsocket, SIO_UDP_CONNRESET, &_false) == -1)
                                                      Con_DPrintf("LHNET_OpenSocket_Connectionless: ioctlsocket SIO_UDP_CONNRESET returned error: %s\n", LHNETPRIVATE_StrError());
#endif
                                                return lhnetsocket;
                                          }
                                          else
                                                Con_Printf("LHNET_OpenSocket_Connectionless: bind returned error: %s\n", LHNETPRIVATE_StrError());
                                    }
#ifdef IPV6_V6ONLY
                                    else
                                          Con_Printf("LHNET_OpenSocket_Connectionless: setsockopt(IPV6_V6ONLY) returned error: %s\n", LHNETPRIVATE_StrError());
#endif
                              }
                              else
                                    Con_Printf("LHNET_OpenSocket_Connectionless: ioctlsocket returned error: %s\n", LHNETPRIVATE_StrError());
                              closesocket(lhnetsocket->inetsocket);
                        }
                        else
                              Con_Printf("LHNET_OpenSocket_Connectionless: socket returned error: %s\n", LHNETPRIVATE_StrError());
#ifdef WIN32
                  }
                  else
                        Con_Print("LHNET_OpenSocket_Connectionless: can't open a socket (WSAStartup failed during LHNET_Init)\n");
#endif
                  break;
            default:
                  break;
            }
            Z_Free(lhnetsocket);
      }
      return NULL;
}

void LHNET_CloseSocket(lhnetsocket_t *lhnetsocket)
{
      if (lhnetsocket)
      {
            // unlink from socket list
            if (lhnetsocket->next == NULL)
                  return; // invalid!
            lhnetsocket->next->prev = lhnetsocket->prev;
            lhnetsocket->prev->next = lhnetsocket->next;
            lhnetsocket->next = NULL;
            lhnetsocket->prev = NULL;

            // no special close code for loopback, just inet
            if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4 || lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
            {
                  closesocket(lhnetsocket->inetsocket);
            }
            Z_Free(lhnetsocket);
      }
}

lhnetaddress_t *LHNET_AddressFromSocket(lhnetsocket_t *sock)
{
      if (sock)
            return &sock->address;
      else
            return NULL;
}

int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *vaddress)
{
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
      int value = 0;
      if (!lhnetsocket || !address || !content || maxcontentlength < 1)
            return -1;
      if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
      {
            time_t currenttime;
            lhnetpacket_t *p, *pnext;
            // scan for any old packets to timeout while searching for a packet
            // that is waiting to be delivered to this socket
            currenttime = time(NULL);
            for (p = lhnet_packetlist.next;p != &lhnet_packetlist;p = pnext)
            {
                  pnext = p->next;
                  if (p->timeout < currenttime)
                  {
                        // unlink and free
                        p->next->prev = p->prev;
                        p->prev->next = p->next;
                        Z_Free(p);
                        continue;
                  }
#ifndef STANDALONETEST
                  if (cl_netlocalping.value && (realtime - cl_netlocalping.value * (1.0 / 2000.0)) < p->sentdoubletime)
                        continue;
#endif
                  if (value == 0 && p->destinationport == lhnetsocket->address.port)
                  {
                        if (p->length <= maxcontentlength)
                        {
                              lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
                              *address = *localaddress;
                              address->port = p->sourceport;
                              memcpy(content, p->data, p->length);
                              value = p->length;
                        }
                        else
                              value = -1;
                        // unlink and free
                        p->next->prev = p->prev;
                        p->prev->next = p->next;
                        Z_Free(p);
                  }
            }
      }
      else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
      {
            SOCKLEN_T inetaddresslength;
            address->addresstype = LHNETADDRESSTYPE_NONE;
            inetaddresslength = sizeof(address->addr.in);
            value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, LHNET_RECVFROM_FLAGS, &address->addr.sock, &inetaddresslength);
            if (value > 0)
            {
                  address->addresstype = LHNETADDRESSTYPE_INET4;
                  address->port = ntohs(address->addr.in.sin_port);
                  return value;
            }
            else if (value < 0)
            {
                  int e = SOCKETERRNO;
                  if (e == EWOULDBLOCK)
                        return 0;
                  switch (e)
                  {
                        case ECONNREFUSED:
                              Con_Print("Connection refused\n");
                              return 0;
                  }
                  Con_DPrintf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
            }
      }
#ifdef SUPPORTIPV6
      else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
      {
            SOCKLEN_T inetaddresslength;
            address->addresstype = LHNETADDRESSTYPE_NONE;
            inetaddresslength = sizeof(address->addr.in6);
            value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, LHNET_RECVFROM_FLAGS, &address->addr.sock, &inetaddresslength);
            if (value > 0)
            {
                  address->addresstype = LHNETADDRESSTYPE_INET6;
                  address->port = ntohs(address->addr.in6.sin6_port);
                  return value;
            }
            else if (value == -1)
            {
                  int e = SOCKETERRNO;
                  if (e == EWOULDBLOCK)
                        return 0;
                  switch (e)
                  {
                        case ECONNREFUSED:
                              Con_Print("Connection refused\n");
                              return 0;
                  }
                  Con_DPrintf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
            }
      }
#endif
      return value;
}

int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentlength, const lhnetaddress_t *vaddress)
{
      lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
      int value = -1;
      if (!lhnetsocket || !address || !content || contentlength < 1)
            return -1;
      if (lhnetsocket->address.addresstype != address->addresstype)
            return -1;
      if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
      {
            lhnetpacket_t *p;
            p = (lhnetpacket_t *)Z_Malloc(sizeof(*p) + contentlength);
            p->data = (void *)(p + 1);
            memcpy(p->data, content, contentlength);
            p->length = contentlength;
            p->sourceport = lhnetsocket->address.port;
            p->destinationport = address->port;
            p->timeout = time(NULL) + 10;
            p->next = &lhnet_packetlist;
            p->prev = p->next->prev;
            p->next->prev = p;
            p->prev->next = p;
#ifndef STANDALONETEST
            p->sentdoubletime = realtime;
#endif
            value = contentlength;
      }
      else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
      {
            value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, LHNET_SENDTO_FLAGS, (struct sockaddr *)&address->addr.in, sizeof(struct sockaddr_in));
            if (value == -1)
            {
                  if (SOCKETERRNO == EWOULDBLOCK)
                        return 0;
                  Con_DPrintf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
            }
      }
#ifdef SUPPORTIPV6
      else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
      {
            value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, 0, (struct sockaddr *)&address->addr.in6, sizeof(struct sockaddr_in6));
            if (value == -1)
            {
                  if (SOCKETERRNO == EWOULDBLOCK)
                        return 0;
                  Con_DPrintf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
            }
      }
#endif
      return value;
}

#ifdef STANDALONETEST
int main(int argc, char **argv)
{
#if 1
      char *buffer = "test", buffer2[1024];
      int blen = strlen(buffer);
      int b2len = 1024;
      lhnetsocket_t *sock1;
      lhnetsocket_t *sock2;
      lhnetaddress_t myaddy1;
      lhnetaddress_t myaddy2;
      lhnetaddress_t myaddy3;
      lhnetaddress_t localhostaddy1;
      lhnetaddress_t localhostaddy2;
      int test1;
      int test2;

      printf("calling LHNET_Init\n");
      LHNET_Init();

      printf("calling LHNET_FromPort twice to create two local addresses\n");
      LHNETADDRESS_FromPort(&myaddy1, LHNETADDRESSTYPE_INET4, 4000);
      LHNETADDRESS_FromPort(&myaddy2, LHNETADDRESSTYPE_INET4, 4001);
      LHNETADDRESS_FromString(&localhostaddy1, "127.0.0.1", 4000);
      LHNETADDRESS_FromString(&localhostaddy2, "127.0.0.1", 4001);

      printf("calling LHNET_OpenSocket_Connectionless twice to create two local sockets\n");
      sock1 = LHNET_OpenSocket_Connectionless(&myaddy1);
      sock2 = LHNET_OpenSocket_Connectionless(&myaddy2);

      printf("calling LHNET_Write to send a packet from the first socket to the second socket\n");
      test1 = LHNET_Write(sock1, buffer, blen, &localhostaddy2);
      printf("sleeping briefly\n");
#ifdef WIN32
      Sleep (100);
#else
      usleep (100000);
#endif
      printf("calling LHNET_Read on the second socket to read the packet sent from the first socket\n");
      test2 = LHNET_Read(sock2, buffer2, b2len - 1, &myaddy3);
      if (test2 > 0)
            Con_Printf("socket to socket test succeeded\n");
      else
            Con_Printf("socket to socket test failed\n");

#ifdef WIN32
      printf("press any key to exit\n");
      getchar();
#endif

      printf("calling LHNET_Shutdown\n");
      LHNET_Shutdown();
      printf("exiting\n");
      return 0;
#else
      lhnetsocket_t *sock[16], *sendsock;
      int i;
      int numsockets;
      int count;
      int length;
      int port;
      time_t oldtime;
      time_t newtime;
      char *sendmessage;
      int sendmessagelength;
      lhnetaddress_t destaddress;
      lhnetaddress_t receiveaddress;
      lhnetaddress_t sockaddress[16];
      char buffer[1536], addressstring[128], addressstring2[128];
      if ((argc == 2 || argc == 5) && (port = atoi(argv[1])) >= 1 && port < 65535)
      {
            printf("calling LHNET_Init()\n");
            LHNET_Init();

            numsockets = 0;
            LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_LOOP, port);
            LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET4, port);
            LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET6, port+1);

            sendsock = NULL;
            sendmessage = NULL;
            sendmessagelength = 0;

            for (i = 0;i < numsockets;i++)
            {
                  LHNETADDRESS_ToString(&sockaddress[i], addressstring, sizeof(addressstring), 1);
                  printf("calling LHNET_OpenSocket_Connectionless(<%s>)\n", addressstring);
                  if ((sock[i] = LHNET_OpenSocket_Connectionless(&sockaddress[i])))
                  {
                        LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
                        printf("opened socket successfully (address \"%s\")\n", addressstring2);
                  }
                  else
                  {
                        printf("failed to open socket\n");
                        if (i == 0)
                        {
                              LHNET_Shutdown();
                              return -1;
                        }
                  }
            }
            count = 0;
            if (argc == 5)
            {
                  count = atoi(argv[2]);
                  if (LHNETADDRESS_FromString(&destaddress, argv[3], -1))
                  {
                        sendmessage = argv[4];
                        sendmessagelength = strlen(sendmessage);
                        sendsock = NULL;
                        for (i = 0;i < numsockets;i++)
                              if (sock[i] && LHNETADDRESS_GetAddressType(&destaddress) == LHNETADDRESS_GetAddressType(&sockaddress[i]))
                                    sendsock = sock[i];
                        if (sendsock == NULL)
                        {
                              printf("Could not find an open socket matching the addresstype (%i) of destination address, switching to listen only mode\n", LHNETADDRESS_GetAddressType(&destaddress));
                              argc = 2;
                        }
                  }
                  else
                  {
                        printf("LHNETADDRESS_FromString did not like the address \"%s\", switching to listen only mode\n", argv[3]);
                        argc = 2;
                  }
            }
            printf("started, now listening for \"exit\" on the opened sockets\n");
            oldtime = time(NULL);
            for(;;)
            {
#ifdef WIN32
                  Sleep(1);
#else
                  usleep(1);
#endif
                  for (i = 0;i < numsockets;i++)
                  {
                        if (sock[i])
                        {
                              length = LHNET_Read(sock[i], buffer, sizeof(buffer), &receiveaddress);
                              if (length < 0)
                                    printf("localsock read error: length < 0");
                              else if (length > 0 && length < (int)sizeof(buffer))
                              {
                                    buffer[length] = 0;
                                    LHNETADDRESS_ToString(&receiveaddress, addressstring, sizeof(addressstring), 1);
                                    LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
                                    printf("received message \"%s\" from \"%s\" on socket \"%s\"\n", buffer, addressstring, addressstring2);
                                    if (!strcmp(buffer, "exit"))
                                          break;
                              }
                        }
                  }
                  if (i < numsockets)
                        break;
                  if (argc == 5 && count > 0)
                  {
                        newtime = time(NULL);
                        if (newtime != oldtime)
                        {
                              LHNETADDRESS_ToString(&destaddress, addressstring, sizeof(addressstring), 1);
                              LHNETADDRESS_ToString(LHNET_AddressFromSocket(sendsock), addressstring2, sizeof(addressstring2), 1);
                              printf("calling LHNET_Write(<%s>, \"%s\", %i, <%s>)\n", addressstring2, sendmessage, sendmessagelength, addressstring);
                              length = LHNET_Write(sendsock, sendmessage, sendmessagelength, &destaddress);
                              if (length == sendmessagelength)
                                    printf("sent successfully\n");
                              else
                                    printf("LH_Write failed, returned %i (length of message was %i)\n", length, strlen(argv[4]));
                              oldtime = newtime;
                              count--;
                              if (count <= 0)
                                    printf("Done sending, still listening for \"exit\"\n");
                        }
                  }
            }
            for (i = 0;i < numsockets;i++)
            {
                  if (sock[i])
                  {
                        LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
                        printf("calling LHNET_CloseSocket(<%s>)\n", addressstring2);
                        LHNET_CloseSocket(sock[i]);
                  }
            }
            printf("calling LHNET_Shutdown()\n");
            LHNET_Shutdown();
            return 0;
      }
      printf("Testing code for lhnet.c\nusage: lhnettest <localportnumber> [<sendnumberoftimes> <sendaddress:port> <sendmessage>]\n");
      return -1;
#endif
}
#endif


Generated by  Doxygen 1.6.0   Back to index