SIPTorch: “SIP Torture” (RFC 4475) testing suite

by do son · September 18, 2020

SIPTorch

SIPTorch is a testing suite for the Session Initiation Protocol. These tests, popularly known as SIP Torture Tests are primarily meant to harden and refine both the SIP protocol and its implementations. Hopefully, this tool will help to shape SIP into a globally interoperable protocol for real-time Internet communication services.

Presently the tool implements the tests mentioned specifically in the RFC 4475, but future extensions to the modules is planned. The tests are divided into several sections – some stress the parser, some test the implementation of application/transaction layer semantics, some messages are themselves invalid, while others test backward compatibility. This tool however does not support IPv6 elements for now.

Highlights

Implements full support for testing IPv4 elements.
48 modules crafted precisely for accurate tests.
User is in complete control of how the tool works.
Report generation functionality in markdown format.
Easily extensible modules library.

Modules

Please have a look at the modules.json for detailed version:

Application Layer Semantics
- 200 OK Response with Broadcast Via Header Field Value
- REGISTER with a Contact Header Parameter
- REGISTER with a URL in Contact Header Parameter
- INVITE Message Missing Required Header Fields
- Unknown/Invalid Content Type
- Invalid/Unacceptable Accept Offering
- Zero Value in Max-Forwards Header
- OPTIONS with Multiple Content-Length Values
- Multiple Values in Single Value Required Fields
- Request-URI with Known but Atypical Scheme
- REGISTER with a URL Escaped Header
- OPTIONS With Unknown Proxy-Require and Require Scheme
- Unknown/Invalid Authorization Scheme
- OPTIONS Request URI with Unknown Scheme
- Unknown Request URI with Unknown Scheme in Header Fields
Backward Compatability Tests
- INVITE With RFC 2543 Syntax Support
Invalid Messages
- Invalid Time Zone in Date Header Field
- Unterminated Quoted String in Display Names
- Response with Overlarge Status Code
- Content Length Larger Than Message
- Request Method with CSeq Method Mismatch
- Escaped Headers in SIP Request-URI
- Extraneous Header Field Separators
- Negative Content-Length
- Non-token Characters in Display Name
- </> Enclosing Request-URI
- Multiple Space Separating Request-Line Elements
- Malformed SIP Request-URI with Embedded LWS
- Unknown Method with CSeq Method Mismatch
- Negative Content-Length
- Failure to Enclose name-addr URI in <>
- Request Scalar Fields with Overlarge Values
- Response Scalar Fields with Overlarge Values
- Spaces Within Address Specification
- Escaped Headers in SIP Request-URI
- Unknown Protocol Version
Syntactical Parser Tests
- Extra Trailing Octets in a UDP Datagram
- Use of % When It Is Not an Escape
- Escaped Nulls in URIs
- Valid Use of the % Escaping Mechanism
- Long Values in Header Fields
- A message with No LWS between Display Name and <
- Multipart MIME Message
- Content-Length Larger Than Message
- Semicolon-Separated Parameters in URI User Part
- Varied and Unknown Transport Types
- Unusual Reason Phrase
Transaction Layer Semantics
- Branch Tag Missing Transaction Identifier