X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=sources%2Fsockbind.c;h=4ecbe97962ac8a8c6cd41f6fdf69a73652da944a;hp=3e31fe7e9c4998880793828ea0c20a63e450a51e;hb=f56df9c083fb4cfcfc410513304be39602001ae7;hpb=8654ce33b450ae7bb34c3907835000a0760c2931

diff --git a/sources/sockbind.c b/sources/sockbind.c
index 3e31fe7..4ecbe97 100644
--- a/sources/sockbind.c
+++ b/sources/sockbind.c
@@ -37,7 +37,7 @@
 
 int sockbind(char *host, char *serv, int prot, int type) 
 {
-    struct addrinfo hint, *addr;
+    struct addrinfo hint, *addr, *save;
     int res;
     int sock;
     /* initialize hint structure */
@@ -50,20 +50,26 @@ int sockbind(char *host, char *serv, int prot, int type)
     if (res != 0) {                                /* on error exit */
 	printf("sockbind cannot resolve host %s, service %s, ", host, serv);
 	printf("protocol %d: %s\n", prot, gai_strerror(res));
+	errno = 0;                                 /* clear errno */
 	return -1;
     }
-    /* get a socket */
-    sock = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
-    if (sock < 0) {
-	printf("sockconn cannot create socket\n");
-	return sock;
+    /* loop on possible addresses */
+    save = addr;
+    while (addr != NULL) {
+	/* get a socket */
+	sock = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+	if ( (sock < 0) && (addr->ai_next == NULL) ) {
+	    printf("sockbind cannot create socket\n");
+	    return sock;
+	} else continue;
+	/* connect the socket */
+	res = bind(sock, addr->ai_addr, addr->ai_addrlen);
+	if ( (res < 0) && (addr->ai_next == NULL) ) {
+	    printf("sockbind cannot bind socket\n");
+	    return res;
+	}
+	addr=addr->ai_next;
     }
-    /* connect the socket */
-    res = bind(sock, addr->ai_addr, addr->ai_addrlen);
-    if (res < 0) {
-	printf("sockconn cannot bind socket\n");
-	return res;
-    }
-    freeaddrinfo(addr);         /* done, release memory */
+    freeaddrinfo(save);                            /* done, release memory */
     return sock;
 }