How to create a tunnel in HTTP

What is HTTP Tunnel

HTTP tunneling is used to create a network link between two computers in conditions of restricted network connectivity including firewalls. The tunnel is created by a proxy server which is usually located in a DMZ zone.

Create a tunnel using HTTP method, you can use the HTTP CONNECT method. The CONNECT method is used to establish a tunnel to a server identified by a target resource. This method allows a client to connect to a server through an HTTP proxy by sending an HTTP CONNECT request to the proxy.

The proxy then establishes a connection to the target server and returns a 200 OK response to the client. The client can then send data to the target server through the established tunnel.

Send an HTTP CONNECT request to the proxy with the target server and port as the request target

If the proxy allows the connection, it will respond with a 200 OK response

The client can then send data to the target server through the established tunnel by sending the data as raw data over the HTTP connection.

It’s important to note that the CONNECT method is intended for use with HTTP proxies and is not part of the core HTTP protocol. Some HTTP servers and clients may not support the CONNECT method.