ServerSocketKnocking

C++ program that connects to a server on a TCP socket and logs the servers response to an HTTP GET request that you send it via the socket.

Setup

To begin with, clone the repo.

git clone https://github.com/dooleyb1/DirectoryTree

Compile and build the code.

make

Example (Public Webpage)

./knock -h www.tcd.ie -p 80 -f response.txt

This will send an HTTP GET request to the webpage www.tcd.ie at the socket listening at port 80 and log the response to the file response.txt.

Example (Local Server)

First run the c++ server program which establishes a server on localhost listening on the port 8888.

./server 

Socket created on port 8888

Waiting for incoming connections...

Then run the c++ knock program and use it to send an HTTP GET request to the host localhost at port 8888. This example logs the response to the terminal rather than a file.

./knock -h localhost -p 8888

Server will then notice recieve the connection request and send back a response (defined in server.cpp). If you look back at the knock program the response from the server should have logged to the terminal.

Hello knock, this is a response from server acting on localhost:8888 - whatsup

Parameters

h, host: the DNS name or IP address of the host to contact
p, port: the TCP port on the server to which to connect
w, web: make an HTTP GET request for the "/" resource
f, file: store any output received from socket in file
H, help: produce a usage message such as that below
?, help: produce a usage message such as that below

Important