Get requested address in socket programming with C

I am using something like this to create a server using C. When I go to 127.0.0.1:5000 from my browser I can see "Hello Worlds" as I am sending it as buffer. But I want 127.0.0.1:5000/filename.html to work. But I don't know how to get filename that comes after 127.0.0.1:5000 in C.

I am using this to make connection:

  serv_addr.sin_family = AF_INET;
  serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
  serv_addr.sin_port = htons(5000);

  bind(listenfd, (struct sockaddr*)&serv_addr,sizeof(serv_addr));

  connfd = accept(listenfd, (struct sockaddr*)NULL ,NULL);