HTTP-GET source code download

jwatte's picture

If you've ever wanted to read web pages into your C or C++ program, then this code is for you. It's the smallest possible code that will let you read arbitrary web URLs into your own program. It does NOT have any kind of interesting features, and is not coded to be fully standards compliant, but:

  • it comes with source
  • it's very small
  • it works

Literally, you should be able to drop it into your own program in less than 10 minutes, assuming you already have a working devstudio project going.

HTTP GET uses the sock_port sockets portability layer to be easy to move to Linux. I'm releasing the source under the MIT license, which means you can include it in your own programs, at your own risk, without needing to release your own source, or pay anyone anything for the right to include the source. However, it if eats your computer, you accept the risk of that -- not me.

HTTP GET does not handle URL re-directs, refresh tags, or any other fanciness like that; it lets you, the user, decide how to handle the data that the server returns, in true minimalist fashion.

Get the source at the bottom of this article (log-in required).

For documentation, look at the unit test function, read the comments in the mysteriously named header , and look at the nettest.cpp implementation file, which implements a very bare-bones wget-like application that snarfs web URLs to disk.

To add to your own project, add mynetwork.cpp and sock_port.cpp to the project. Make sure that sock_port.h and mynetwork.h can be found in your include path. Build. That's it!

To start a new request, call NewHttpRequest(url), passing a full "http://host/path" URL (:port is optional). Then keep polling the request by checking whether it's complete(); when it is, you can read() data out of it until there is no more to read. Call dispose() when you're done.

Reading data while it's streaming (not yet complete()) is also supported, as well as calling rewind() to start reading from the beginning again. That, however, concludes the feature list. I told you it was small!

You will know something went wrong when NewHttpRequest() returns NULL, or when the request is complete() but read() returns 0 bytes. You don't know WHAT went wrong -- but, hey, that's the web for you!

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http-get-20081119.zip13.59 KB