The Protocol Client will wait for this packet after sending a Connect packet itself. The Connack packet is sent from a Protocol Gateway to a Protocol Client when it has successfully opened up a TCP connection on behalf of the Client. 1: The payload is a utf-8 hostname string followed by a 2-byte port number.
![tcp bridge tcp bridge](http://www.beaglesoft.com/images/AvirtAdmin.jpg)
#Tcp bridge serial
Add ping option to periodically test serial line and drop upstream connection if timeout.The gateway forwards traffic bi-directionally, as long as tcp connection is open and serial line is good.The Protocol Client connects to the Protocol Gateway over a serial-like connection, which can possibly corrupt data. The Protocol Gateway opens a real TCP connection to a set destination on behalf of the Protocol Client.
![tcp bridge tcp bridge](https://www.bridgetronic.com/wp-content/uploads/2019/05/11-1-1024x766.jpg)
#Tcp bridge free
![tcp bridge tcp bridge](https://www.aggsoft.com/tcp-com/tcp-com-bridge-in-devices-manager-s.png)
Host side gateway service written in Go that listens on COM ports for serial clients. An error tolerant serial UART to TCP connection, raw data bridge.