package xmpp import ( "crypto/tls" "net" "time" ) // XMPPTransport implements the XMPP native TCP transport type XMPPTransport struct { Config TransportConfiguration TLSConfig *tls.Config // TCP level connection / can be replaced by a TLS session after starttls conn net.Conn } func (t *XMPPTransport) Connect(address string) error { var err error t.conn, err = net.DialTimeout("tcp", address, time.Duration(t.Config.ConnectTimeout)*time.Second) return err } func (t XMPPTransport) DoesStartTLS() bool { return true } func (t *XMPPTransport) StartTLS(domain string) error { if t.Config.TLSConfig == nil { t.Config.TLSConfig = &tls.Config{} } if t.Config.TLSConfig.ServerName == "" { t.Config.TLSConfig.ServerName = domain } tlsConn := tls.Client(t.conn, t.TLSConfig) // We convert existing connection to TLS if err := tlsConn.Handshake(); err != nil { return err } if !t.TLSConfig.InsecureSkipVerify { if err := tlsConn.VerifyHostname(domain); err != nil { return err } } return nil } func (t XMPPTransport) Read(p []byte) (n int, err error) { return t.conn.Read(p) } func (t XMPPTransport) Write(p []byte) (n int, err error) { return t.conn.Write(p) } func (t XMPPTransport) Close() error { return t.conn.Close() }