diff --git a/simgear/io/raw_socket.cxx b/simgear/io/raw_socket.cxx index aaa7d871..d972c145 100644 --- a/simgear/io/raw_socket.cxx +++ b/simgear/io/raw_socket.cxx @@ -115,17 +115,33 @@ void IPAddress::set ( const char* host, int port ) return; } - struct addrinfo* result = NULL; - int err = getaddrinfo(host, NULL, NULL /* no hints */, &result); + struct addrinfo hints; + memset(&hints, 0, sizeof(struct addrinfo)); + hints.ai_family = AF_INET; + + struct addrinfo* result0 = NULL; + int err = getaddrinfo(host, NULL, &hints, &result0); if (err) { SG_LOG(SG_IO, SG_WARN, "getaddrinfo failed for '" << host << "' : " << gai_strerror(err)); - } else if (result->ai_addrlen != getAddrLen()) { - SG_LOG(SG_IO, SG_ALERT, "mismatch in socket address sizes"); } else { - memcpy(addr, result->ai_addr, result->ai_addrlen); - } - - freeaddrinfo(result); + struct addrinfo* result; + for (result = result0; result != NULL; result = result->ai_next) { + if (result->ai_family != AF_INET) { // only accept IP4 for the moment + continue; + } + + if (result->ai_addrlen != getAddrLen()) { + SG_LOG(SG_IO, SG_ALERT, "mismatch in socket address sizes: got " << + result->ai_addrlen << ", expected " << getAddrLen()); + continue; + } + + memcpy(addr, result->ai_addr, result->ai_addrlen); + break; + } // of getaddrinfo results iteration + } // of getaddrinfo succeeded + + freeaddrinfo(result0); addr->sin_port = htons (port); // fix up port after getaddrinfo }