issue 6 fixed

ChangeLog

@@ -7,6 +7,7 @@ Version 4.1.2.2 'Vitari':
 	- Move debian package from SVN to GIT.
 	- Move secondary download area to coturn.net.
 	- TLS renegotiation DoS attack prevention implemented;
+	- FQDN as relay-ip and listener-ip parameters (issue 6);
 	- oAuth security implementation. (TODO) 
 	
 08/14/2014 Oleg Moskalenko <mom040267@gmail.com>

src/client/ns_turn_ioaddr.c

@@ -29,6 +29,8 @@
  */
 
 #include "ns_turn_ioaddr.h"
+#include <netdb.h>
+#include <string.h>
 
 //////////////////////////////////////////////////////////////
 
@@ -202,7 +204,38 @@ int make_ioa_addr(const u08bits* saddr, int port, ioa_addr *addr) {
 #endif
     addr->s6.sin6_port = nswap16(port);
   } else {
-    return -1;
+    struct addrinfo addr_hints;
+    struct addrinfo *addr_result = NULL;
+    int err;
+
+    memset(&addr_hints, 0, sizeof(struct addrinfo));
+    addr_hints.ai_family = AF_UNSPEC;    /* Allow IPv4 or IPv6 */
+    addr_hints.ai_socktype = SOCK_DGRAM; /* Datagram socket */
+    addr_hints.ai_flags = AI_PASSIVE;    /* For wildcard IP address */
+    addr_hints.ai_protocol = 0;          /* Any protocol */
+    addr_hints.ai_canonname = NULL;
+    addr_hints.ai_addr = NULL;
+    addr_hints.ai_next = NULL;
+
+    err = getaddrinfo((const char*)saddr, NULL, &addr_hints, &addr_result);
+    if (err != 0) {
+      fprintf(stderr,"error resolving '%s' hostname: %s\n",saddr,gai_strerror(err));
+      return -1;
+    }
+    
+    // getaddrinfo() returns a list of address structures. We just take the
+    // first one.
+    ns_bcopy(addr_result->ai_addr, addr, addr_result->ai_addrlen);
+    if (addr_result->ai_family == AF_INET) {
+      addr->s4.sin_port = nswap16(port);
+    } else if (addr_result->ai_family == AF_INET6) {
+      addr->s6.sin6_port = nswap16(port);
+#if defined(SIN6_LEN) /* this define is required by IPv6 if used */
+      addr->s6.sin6_len = sizeof(struct sockaddr_in6);
+#endif
+    }
+    
+    freeaddrinfo(addr_result);
   }
 
   return 0;