In this article, we look at certain aspects of TCP/UDP/IP headers which we would most likely be used in the coming example implementations for Raw socket for TCP/UDP protocols in this website.  Kindly note that this article does not try to explain the TCP/UDP/IP headers in detail, but only tries to provide context to the […]

In the Previous article (Link here), we looked at how Raw sockets are invoked and how Raw sockets allow an application to directly access lower layer protocols or create it’s own L4 protocol on top of the IP layer. What does the above statement mean? We look at a diagram below (taken from the book […]

Normally the TCP/UDP sockets provide an abstraction wherein the user of those sockets does not need to concern himself/herself with the TCP/IP or layer 2 headers. The data is provided to the socket with all the lower layer headers removed. But what if some one wished to tweak the IP headers themselves. If a developer […]