Question 1

How to build a SIP proxy server with rsipstack?

Accepted Answer

Use the provided proxy example by running 'cargo run --example proxy' with parameters like port and external IP. It demonstrates registration handling, call routing, and transaction forwarding for a stateful proxy.

Question 2

rsipstack vs SIP.js for building user agents?

Accepted Answer

rsipstack is a Rust library for server-side or native applications, offering full SIP compliance and high performance, while SIP.js is JavaScript-based for browser clients. Choose rsipstack for Rust backends and SIP.js for web frontends.

Question 3

Does rsipstack support WebSocket transport?

Accepted Answer

Yes, WebSocket transport is supported but requires enabling the optional 'websocket' feature, which is enabled by default. This allows integration with WebRTC and browser-based communication.

Question 4

How to handle digest authentication in rsipstack?

Accepted Answer

Use the built-in authentication support via the Credential struct in the dialog layer, as shown in the user agent example, to handle secure SIP communications with username and password.

Question 5

What are the performance benchmarks for rsipstack?

Accepted Answer

Benchmark tests in the README show over 1,500 calls per second in local setups, leveraging Rust's efficiency. However, real-world performance depends on network conditions and application complexity.

Question 6

Can rsipstack integrate with WebRTC for browser calls?

Accepted Answer

Yes, it's designed for integration with WebRTC, such as in WebRTC SBC scenarios, by using WebSocket transport and handling SIP signaling, though media handling requires additional WebRTC libraries.

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