// DialTimeout acts like Dial but takes timeouts for establishing the
// connection to the server, writing a command and reading a reply. lv3 AppEngine
func DialTimeout(cx appengine.Context, network, address string, connectTimeout, readTimeout,
writeTimeout time.Duration) (Conn, error) {
var c *socket.Conn
var err error
if connectTimeout > 0 {
c, err = socket.DialTimeout(cx, network, address, connectTimeout)
} else {
c, err = socket.Dial(cx, network, address)
}
if err != nil {
return nil, err
}
return NewConn(c, readTimeout, writeTimeout), nil
}
func getCreateTunnelConn(context appengine.Context, uid string, ev *event.SocketConnectWithDataEvent) (*tunnelConn, bool, error) {
created := false
if c, exist := getTunnelConn(uid, ev.GetHash()); exist {
if c.Addr == ev.Addr {
return c, created, nil
} else {
closeTunnelConn(uid, ev.GetHash())
}
}
c := &tunnelConn{Net: ev.Net, Addr: ev.Addr}
conn, err := socket.DialTimeout(context, ev.Net, ev.Addr, time.Duration(ev.Timeout)*time.Second)
if nil == err {
c.c = conn
created = true
saveTunnelConn(uid, ev.GetHash(), c)
return c, created, nil
}
context.Errorf("[%d]Failed to connect %s for reason:%v", ev.GetHash(), ev.Addr, err)
return nil, created, err
}