go-diameter

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Version: v3.0.2+incompatible Latest Latest
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Published: Jul 20, 2018 License: BSD-3-Clause

README

Diameter Base Protocol

Package go-diameter is an implementation of the Diameter Base Protocol RFC 6733 and a stack for the Go programming language.

GoDoc

Status

The current implementation is solid and works fine for general purpose clients and servers. It can send and receive messages efficiently as well as build and parse AVPs based on dictionaries.

See the API documentation at http://godoc.org/github.com/fiorix/go-diameter

Build Status

Features

  • Comprehensive XML dictionary format
  • Embedded dictionaries:
  • Human readable AVP representation (for debugging)
  • TLS, IPv4 and IPv6 support for both clients and servers
  • Stack based on net/http for simplicity
  • Ships with sample client, server, snoop agent and benchmark tool
  • State machines for CER/CEA and DWR/DWA for clients and servers
  • TCP and SCTP support. SCTP support relies on kernel SCTP implementation and external github.com/ishidawataru/sctp package and is currently tested and enabled for Go 1.8+ and x86 Linux

Install

go-diameter requires at least Go 1.4.

Make sure Go is installed, and both GOPATH and GOROOT are set.

Install:

go get github.com/fiorix/go-diameter/diam

Check out the examples:

cd $GOPATH/src/github.com/fiorix/go-diameter/examples

See the test cases for more specific examples.

Performance

Clients and servers written with the go-diameter package can be quite performant if done well. Besides Go benchmarks, the package ships with a simple benchmark tool to help testing servers and identifying bottlenecks.

In the examples directory, the server has a pprof (http server) that allows the go pprof tool to profile the server in real time. The client can perform benchmarks using the -bench command line flag.

For better performance, avoid logging diameter messages. Although logging is very useful for debugging purposes, it kills performance due to a number of conversions to make messages look pretty. If you run benchmarks on the example server, make sure to use the -s (silent) command line switch.

TLS degrades performance a bit, as well as reflection (Unmarshal). Those are important trade offs you might have to consider.

Besides this, the source code (and sub-packages) have function benchmarks that can help you understand what's fast and isn't. You will see that parsing messages is much slower than writing them, for example. This is because in order to parse messages it makes numerous dictionary lookups for AVP types, to be able to decode them. Encoding messages require less lookups and is generally simpler, thus faster.

Directories

Path Synopsis
Package diam provides support for the Diameter Base Protocol for Go.
Package diam provides support for the Diameter Base Protocol for Go.
avp
Package avp provides Diameter AVP constants and flags.
Package avp provides Diameter AVP constants and flags.
datatype
Package datatype provides data types for Diameter AVPs.
Package datatype provides data types for Diameter AVPs.
diamtest
Package diamtest provides utilities for Diameter testing.
Package diamtest provides utilities for Diameter testing.
dict
Package dict provides a Diameter dictionary parser.
Package dict provides a Diameter dictionary parser.
sm
Package sm provides diameter state machines for clients and servers.
Package sm provides diameter state machines for clients and servers.
sm/smparser
Package smparser provides message parsers for the state machine.
Package smparser provides message parsers for the state machine.
sm/smpeer
Package smpeer provides functions for extracting information from a CER or CEA, and associating with a Context.
Package smpeer provides functions for extracting information from a CER or CEA, and associating with a Context.
examples
bare
Experimental diameter server that currently does nothing but print incoming messages.
Experimental diameter server that currently does nothing but print incoming messages.
s6a_client
Diameter S6A client example.
Diameter S6A client example.
s6a_proxy/protos
protos package encapsulates protoc generated go files for S6a GRPC Proxy.
protos package encapsulates protoc generated go files for S6a GRPC Proxy.
s6a_proxy/service
package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation
package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation package servce implements S6a GRPC proxy service which sends AIR, ULR messages over diameter connection, waits (blocks) for diameter's AIAs, ULAs & returns their RPC representation

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