WebRTC SDP Session Description Protocol Parser
WebRTC SDP Session Description Protocol Parser: Parses RFC 4566 SDP line tokens: version, origin, media types (audio), ports, and codec payload mappings (PCMU/8000).
About this webrtc sdp session description protocol parser
WebRTC SDP Session Description Protocol Parser — browser-based utility.
How this tool works
Implements client-side WebRTC SDP Session Description Protocol Parser operations. Parses RFC 4566 SDP line tokens: version, origin, media types (audio), ports, and codec payload mappings (PCMU/8000) specifically designed for a voip real-time communication engineer inspects an sdp session offer for media codecs and ice candidates.
- Protocol Message De-serialization: Parses raw DNS wire-format byte streams or HAR 1.2 JSON waterfall entries.
- Record Validation & Separation: Enforces RFC 6844 requirements that CAA authorization ('issue', 'issuewild') and reporting ('iodef') tags reside on separate records.
- Waterfall Timing Analysis: Sums network phases (blocked, dns, connect, ssl, send, wait, receive) to evaluate latency waterfalls.
- Visual Diagnostic Reporting: Renders color-coded waterfall timelines and highlights high-latency assets or missing HTTP caching headers.
Worked example
Scenario: Extract selected SDP lines without creating a connection.
Sample input:
Processing: Split trimmed lines and collect media, rtpmap, candidate, fingerprint and ice ufrag prefixes.
Illustrative output:
Limits and verification
Rejects combined single-line CAA records that violate RFC 6844 syntax. In HAR file analysis, protects against multi-gigabyte log allocations by parsing entry streams with memory safety bounds.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
- RFC 8866 (Session Description Protocol)
- W3C WebRTC 1.0
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Enter, paste, or select your input data into the WebRTC SDP Session Description Protocol Parser workspace controls.
- Review available parameter fields, units, formats, or options configured for your task.
- Click the action button or observe immediate live calculations rendered in your browser runtime.
- Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.
Frequently asked questions
What SDP lines does the analyzer extract?+
It splits nonempty trimmed SDP lines and extracts only m= media lines, a=rtpmap codec lines, a=candidate lines, a=fingerprint values and the first a=ice-ufrag value. It does not negotiate or validate WebRTC.
Which controls and result fields exist?+
The page has a text input, Run locally and Load sample. JSON returns version, media sections, parsed media, codecs, candidates, fingerprints and iceUfrag. It does not create peer connections, send media, contact STUN/TURN, test reachability or inspect certificates.
Which parsing limits apply?+
A media line is split on whitespace; a malformed rtpmap becomes a raw line. Candidate lines are retained verbatim, and fingerprint text is copied after its prefix. The parser does not check SDP grammar, candidate priority, codec compatibility, DTLS validity, ICE state or session success.
What result does the worked example produce?+
In the worked example, the tool matched the independent sample: one audio section, Opus 48000/2, one candidate, one fingerprint and iceUfrag czoa. This proves that line extraction vector only.