gossip
A SIP stack implementation in Go for building stateful SIP user agents, clients, servers, and proxies.
What is gossip?
Gossip is a SIP (Session Initiation Protocol) stack implemented in Go for building stateful SIP user agents, clients, servers, and proxies. It handles SIP 2.0 transactions over UDP and TCP, providing the protocol foundation for VoIP and real-time communication systems. The project enables developers to create SIP-based applications without implementing the low-level protocol details from scratch.
Go developers building SIP-based communication systems such as softphones, SIP proxies, VoIP servers, or telephony applications that require protocol-level control.
Developers choose Gossip because it offers a native Go implementation of the SIP stack, which is simpler to integrate into Go-based projects compared to C/C++ alternatives. It provides essential SIP transaction handling with support for both UDP and TCP, while being specifically designed for stateful SIP agents.
Overview
SIP stack in Golang
Use Cases
Best For
- Building custom SIP user agents or softphones in Go
- Implementing SIP proxy servers for VoIP infrastructure
- Creating SIP-based telephony servers or PBX systems
- Developing real-time communication applications with SIP protocol support
- Prototyping or testing SIP transaction handling in Go environments
- Integrating SIP functionality into existing Go-based communication systems
Not Ideal For
- Production environments requiring stable, backward-compatible APIs
- Systems that need full SIP compatibility or advanced features like SDP negotiation or security extensions
- Teams without resources to handle frequent updates or debug low-level protocol issues
Pros & Cons
Pros
Implements basic SIP 2.0 transactions, providing a standards-based foundation for VoIP and real-time communication systems.
Works over both UDP and TCP, offering flexibility in network configurations for different deployment scenarios.
Built in Go, it simplifies integration into Go-based projects without the complexity of C/C++ bindings or foreign interfaces.
Has been live tested with actual softphones, ensuring core functionality works in practical use cases.
Cons
APIs will change without warning until V1.0, making it risky for long-term projects due to potential breaking changes.
Missing some compatibility features and isn't well tested, which could hinder interoperability with other SIP implementations.
Has known bugs and is in early development (V0.2), leading to potential instability in production environments.
Frequently Asked Questions
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