Understanding socket programming

The Go standard library allows us to easily interact with the transport layer, using both TCP and UDP connections. In this section, we will look at how to expose a service using a socket and how to look it up and use it from another application.

Network package

The tools needed to create and handle a TCP connection are located inside the net package. The main interface of the package is Conn, which represents a connection.

It has four implementations:

• IPConn: Raw connection that uses the IP protocol, the one that TCP and UDP connection are built on
• TCPConn: An IP connection that uses the TCP protocol
• UDPConn: An IP connection that uses the UDP protocol
• UnixConn: A Unix domain socket, where...