Report error string on connection failure rather than error code.

ChangeLog.txt

@@ -1,6 +1,13 @@
+Broker:
 - Fix incorrect bridge notification on initial connection. Closes #467096.
 - Build fixes for OpenBSD.
 
+Client library:
+- Add missing error strings to mosquitto_strerror.
+
+Clients:
+- Report error string on connection failure rather than error code.
+
 1.4.2 - 20150507
 ================
 

client/client_shared.c

@@ -755,7 +755,7 @@ int client_connect(struct mosquitto *mosq, struct mosq_config *cfg)
 #endif
 				fprintf(stderr, "Error: %s\n", err);
 			}else{
-				fprintf(stderr, "Unable to connect (%d).\n", rc);
+				fprintf(stderr, "Unable to connect (%s).\n", mosquitto_strerror(rc));
 			}
 		}
 		mosquitto_lib_cleanup();

lib/mosquitto.c

@@ -1273,6 +1273,8 @@ void mosquitto_user_data_set(struct mosquitto *mosq, void *userdata)
 const char *mosquitto_strerror(int mosq_errno)
 {
 	switch(mosq_errno){
+		case MOSQ_ERR_CONN_PENDING:
+			return "Connection pending.";
 		case MOSQ_ERR_SUCCESS:
 			return "No error.";
 		case MOSQ_ERR_NOMEM:
@@ -1303,6 +1305,8 @@ const char *mosquitto_strerror(int mosq_errno)
 			return "Unknown error.";
 		case MOSQ_ERR_ERRNO:
 			return strerror(errno);
+		case MOSQ_ERR_EAI:
+			return "Lookup error.";
 		case MOSQ_ERR_PROXY:
 			return "Proxy error.";
 		default: