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Editorial Team
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Asked: 2026-05-26T11:34:16+00:00

This is probably a long shot but doesn’t hurt to ask… Do you think

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This is probably a long shot but doesn’t hurt to ask…
Do you think it’s possible to obtain the IP address of the build host when building for iOS in Objective-C under xcode?
It’d be useful for my testing if it were possible.
For example: 

NSString* backendUrl = [NSString stringWithFormat:@"http://%@:5000/", HOST_IP];

Where I would expect HOST_IP (if there was something like that) to be something like this, but of course automatically controlled at build time to hold the correct IP:

#define HOST_IP @"172.76.77.5"
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1 Answer

  1. Editorial Team

    No convenient solution, but here are some options to consider.

    1. In your #define, type your computer’s Host-Name (if it’s on a LAN) – http://mylaptop:5000/
      or simply sign up to a free domain @ http://www.no-ip.com/

    2. If it’s necessary to specifically have a #define macro that contains your IP Address, you could simply write a small bash script that updates the defined ip in your .m/.cpp/.h file or whatever holds this #define.
      then you can add the script as a pre-build phase, or just run the script when you know that the IP Address has changed. although I admit it’s kinda hackish.

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