Develop webchat in C language

Here is a small description of the work requested + a RAR archive containing the architecture of the current site containing the chat. My client has been running a free LGBT community chat for years (30 to 80 people continuously) which is old. Its three main features are: a) That a thumbnail of the person is visible in the list of present on the right window with his nickname. b) When you want to chat with one of the nicknames, a private "one to one" dialog box opens in the left window where the image is shown. c) Finally, this script which was made in C resides in a CGI-BIN The developer who made this script is no longer available... I want to change server but as it is compiled, I have a root problem to transfer it. Anyway, it is not responsive and it will be an improvement to do in any case. Your mission if you accept it :) Build a chat on the same principle in an equivalent language Why develop in C in the CGI bin? For its robustness and its relative imperviousness to intrusions, it is fast since it is the server that works We are an agency and we use freelancers. But for this work the rate must be reasonable, because it is for a voluntary association and their site is free. You can see the current site in production here >> [login to view URL] click on "The transgender photo chat" / "Nad's little cat" / then fill in the form (No registration is required, the site is free and open to all) : The site will be built by us, you would only take care of the chat script and its dependencies. The web pages, the images and all the elements are provided by us. It is a free association site (no online payment) Here're images and all elements [login to view URL]