sofia-sip
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Description:
SIP User-Agent library
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: sip voip networking library telephony
Install: brew install sofia-sip
About:
Sofia-SIP is an open-source SIP User-Agent library, compliant with the IETF RFCs for SIP and SDP. It provides a framework for building SIP-enabled applications, handling protocol signaling and session management. The library is written in C and is designed to be portable and efficient for integration into various software.
Key Features:
  • RFC 3261 compliant
  • C-based library for portability
  • Supports UDP, TCP, and TLS transports
  • Includes SDP implementation for media negotiation
Use Cases:
  • Developing custom VoIP clients or softphones
  • Building SIP-based network servers and proxies
  • Integrating SIP signaling into embedded devices
Alternatives:
  • PJSIP – PJSIP is a comprehensive open-source SIP library that also includes media handling, whereas Sofia-SIP focuses primarily on the signaling stack.
  • libre – libre is a lightweight SIP/SDP stack often used in security-focused applications, while Sofia-SIP is a more established, traditional library.
Version History
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