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Asked: 2026-06-10T01:02:51+00:00

I have a piece of custom built web server code. It was written using

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I have a piece of custom built web server code. It was written using the evnet module.

It seems to the cut the length of the message when requested from a remote client. But when I use it on the same machine, it seems to deliver the full message. I can’t figure out what the problem could be or how to diagnose it. I tested it using a web browser, curl and nc. It never delivered the full length message when requesting from remote clients.

Here’s a simplified version of my webserver that still exhibits the problem. I am doing this on Ubuntu 11.04 with Python 2.7.1

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1 Answer

  1. Editorial Team

    You are closing the socket immediately after calling send() to send a bunch of data. If there is data still buffered, it will be thrown away when you close the socket.

    Instead, you should call shutdown(SHUT_WR) on the socket to tell the remote end that you are finished sending. This is called a TCP “half-close”. In response, the other end will close its side, and you will get a notification that the socket is no longer readable. Then, and only then, should you close the socket handle.

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