Not quite accurate. The code he wrote does the "proxy" logic while libraries underneath it are doing the work of parsing HTTP. He's definitely not doing "calls

Not quite accurate. The code he wrote does the "proxy" logic while libraries underneath it are doing the work of parsing HTTP. He's definitely not doing "calls into a lib that implements an http proxy." More to the point, what he has is a proxy in 20 lines of code which will let him make, say, a custom load balancing http proxy in 40 lines of code.