Improve behavior when no SRV records are set.

connect.go

@@ -16,9 +16,9 @@ import (
 
 func connect(options xmpp.Options, directTLS bool) (*xmpp.Client, error) {
 	proxy := os.Getenv("HTTP_PROXY")
+	server := options.User[strings.Index(options.User, "@")+1:]
 	// Look up SRV records if server is not specified manually.
 	if options.Host == "" {
-		server := options.User[strings.Index(options.User, "@")+1:]
 		// Don't do SRV look ups if proxy is set.
 		if proxy == "" {
 			// Look up xmpp-client SRV records.
@@ -46,6 +46,9 @@ func connect(options xmpp.Options, directTLS bool) (*xmpp.Client, error) {
 	}
 	_, port, _ := net.SplitHostPort(options.Host)
 	if port == "" {
+		if options.Host == "" {
+			options.Host = server
+		}
 		// Try port 5223 if directTLS is set and no port is provided.
 		if directTLS {
 			options.NoTLS = false