Connect two TCP sockets and optionally display the traffic.


TCP Sockets come in two flavours a server and a client, you have to be one or the other. If you want to join two clients or two servers this package includes all the tools you need. to connect servers to servers and clients to clients. Why would you need this type of service? To create a rendezvous service that two clients can connect to for example or to join two servers with a shared client. Also included is a client to server, this acts as a simple TCP proxy and as with all the services you can optionally set the verbose flag and the readable (ascii) characters that are being transmitted and received will be displayed.

Getting started

dart pub add socket_connector


The following code will open two server sockets and connect them and display any traffic that goes between the sockets. You can test this using ncat to connect to the two listening ports in two sessions. You will see what is typed in one window appear in the other plus see the data on at the dart program.


ncat localhost 8000

ncat localhost 9000

SocketConnector socketStream = await SocketConnector.serverToServer(
      serverAddressA: InternetAddress.anyIPv4,
      serverAddressB: InternetAddress.anyIPv4,
      serverPortA: 9000,
      serverPortB: 8000,
      verbose: true);
      'Sender Port: ${socketStream.senderPort().toString()}  Receiver Port: ${socketStream.receiverPort().toString()}');

Additional information

TODO: All SocketConnectors only acceot a single session currently, so there is one type of connection that is currently missing which is server to socket which could allow separate sessions as clients connect.