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OS X Socket Performance
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OS X Socket Performance

Hi,

Based on some discussion on the Cocoa dev list, there are apparently three options for creating socket based applications on OS X: use an objective-c wrapper around BSD sockets (like SmallSockets), create a BSD socket in straight C, or use CFNetwork.

My question is this: which of these options offers the highest performance? My guess is that working in straight C with BSD sockets would be, but I have a strong desire to stick with Apple's APIs in order to leverage any future enhancements to CFNetwork.

The project we're working on is basically a chat server with some additional HTTP based administration functionality. I know that Macromedia was able to produce a chat-like server for OS 9 (the Multiuser Server) which claimed support for 2000 users (using Open Transport, I assume) on hardware that was not nearly as fast as today's G4s, so I would think targeting 2000 users wouldn't be impossible, but I'm concerned about the overhead of CFNetwork and SmallSockets.

Any advice as to where I could research this (or direct experience!) would be incredibly helpful. TIA!

-Chris
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