Initial commit of files

src/libnet/udp_client.c

@@ -0,0 +1,51 @@
+//
+// UDP Client Connect
+//
+
+#include "netlib.h"
+
+int udp_client( const char *host, const char *service )
+{
+  int     sock;       /* tcp socket */
+  struct addrinfo     hints, *res, *ressave;
+  
+  /* default IPv6 localhost */
+  if ( !host || !strlen(host) )
+    host = "ip6-localhost";
+  
+  /* get address information */   
+  bzero(&hints, sizeof(struct addrinfo));
+  hints.ai_family = AF_UNSPEC;
+  hints.ai_socktype = SOCK_DGRAM;
+  if ( getaddrinfo(host, service, &hints, &res) )
+  {
+    log_error("getaddrinfo");
+    return -1;
+  }
+  ressave = res;
+  
+  while (res)
+  {
+    sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+    if (sock < 0)
+      continue;   // ignore
+      
+      // connected (allows send()/write() to be used)
+      if ( connect(sock, res->ai_addr, res->ai_addrlen) == 0 )
+        break;      // success
+        
+        // next    
+        close(sock);
+      res = res->ai_next;
+  }
+  
+  if ( !res )
+  {
+    log_error("udp_client");
+    return -1;
+  }
+  
+  freeaddrinfo(ressave);
+  
+  return sock;
+}