Java-based HTTP server

1.java.net.socket Java.net.ServerSocket

2. In HTTP, it is always the client that begins a transaction by establishing a connection and sending an HTTP request. The Web server does not need to contact the client or make a callback connection to the client. Both the client and the server can terminate the connection prematurely.

3. An HTTP request consists of three components

Method--uri--Protocol/version

The requested header

Main content

URIs are usually interpreted relative to the server root, so always a slash/start.

The 4.accept method returns only when there is a connection request, and returns an instance of the socket class.

Java-based HTTP server