问题
Are there any non-GPL SIP libraries/SDKs that'll let me implement SIP for iOS?
回答1:
These are the ones I know about:
Proprietary:
- vaxvoip
Open source: GPL/LGPL
- sofia-sip
- linphone
- exosip
回答2:
oSIP is LGPL and therefore can be used (as a library) in commercial and closed-source projects. It compiles easily for arm. It is the SIP library used by linphone for iPhone; however, linphone is GPL.
回答3:
These days SIP over WebRTC is getting popularity. It uses SIP Signaling and WebRTC as Media which is provided by google.
Following options are also very good if you to avoid getting into SIP level complexities.
https://alqatech.com/services/webrtc-sdk-android/
https://alqatech.com/services/webrtc-sdk-ios/
来源：https://stackoverflow.com/questions/10854442/sip-library-for-ios-with-non-gpl-license