Python Diameter Stack¶
This Python package provides tools to create and parse Diameter Messages and
AVPs, to communicate with diameter peers using the diameter base protocol and
to write diameter applications, as defined in the Diameter Base rfc6733.
The diameter stack supports transports over both TCP and SCTP, with SCTP support provided by an optional depency on pysctp.
The provided Application and Node implementations handle the majority of the basic protocol-level operations automatically, such as managing peer tables, sending CER/CEA, DWR/DEA and disconnecting with DPR/DPA.
Functional overview¶
The package contains an extensive AVP dictionary and allows constructing AVPs and Diameter messages either manually, or by parsing network-received bytes. Message AVPs can be accessed directly as instance attributes.
The diameter package provides tools for:
- Parsing and writing AVPs
- Parsing and writing diameter Mesages
- Creating diameter nodes and connecting to other peers
- Writing diameter applications
Supported applications¶
The diameter stack has inbuilt support for Diameter Base, Gy, Rf, Ro, Sy, Cx and Dx applications and a generic implementation of application types that allows working even with unsupported application types.
Supported diameter application commands¶
The diameter stack provides a Python command class for the following application message types:
- Diameter Base Protocol
rfc3588,rfc6733 -
- Abort-Session
- Accounting
- Capabilities-Exchange
- Device-Watchdog
- Disconnect-PeerConnection
- Re-Auth
- Session-Termination
- Diameter Mobile IPv4
rfc4004 -
- AA-Mobile-Node
- Home-Agent-MIP
- Diameter Network Access Server
rfc4005,rfc7155 -
- AA
- Abort-Session
- Accounting
- Re-Auth
- Session-Termination
- Diameter Credit Control
rf4006,rfc6733,3GPP TS 32.299 -
- Credit-Control, with full 3GPP specification support
- Diameter Extensible Authentication Protocol (EAP)
rfc4072 -
- Diameter-EAP
- Diameter Policy and charging control
rfc4072 -
- Spending-Limit
- Spending-Status-Notification
- Diameter Cx and Dx interfaces
3GPP TS 29.229 -
- User-Authorization
- Server-Assignment
- Location-Info
- Multimedia-Auth
- Registration-Termination
- Push-Profile
The stack includes also a generic fallback Python class for every other message.