Problem
Part I
Develop a web server that handles one HTTP request at a time. Your web server should accept and parse the HTTP request, get the requested file from the server's file system, create an HTTP response message consisting of the requested file preceded by header lines, and then send the response directly to the client. If the requested file is not present in the server, the server should send an HTTP "404 Not Found" message back to the client.
Part II
In Part I, the web server handles only one HTTP request at a time. Implement a multithreaded server that is capable of serving multiple requests simultaneously. Using threading, first create a main thread in which your modified server listens for clients at a fixed socket. When it receives a TCP connection request from a client, it will set up the TCP connection through another socket and service the client request in a separate thread. There will be a separate TCP connection in a separate thread for each request/response pair.
Put an HTML file (e.g., HelloWorld.html) in the same directory that the web server source file is in. Run the web server program. Determine the IP address of the host that is running the server (e.g., 128.238.251.26). From another host, open a browser and provide the corresponding URL. For example:
"HelloWorld.html" is the name of the file you placed in the server directory. Note also the use of the port number after the colon. You need to replace this port number with whatever port you have used in the server code. In the above example, we have used the port number "6789". The browser should then display the contents of "HelloWorld.html". If you omit ":6789", the browser will assume port "80" and you will get the web page from the server only if your server is listening at port "80". Then try to get a file that is not present at the server. You should get a "404 Not Found" message.