17 releases (7 breaking)
0.7.1 | Jul 21, 2024 |
---|---|
0.6.0 | May 4, 2024 |
0.4.0 | Mar 24, 2024 |
#1223 in Network programming
Used in petrel
160KB
4K
SLoC
Diameter
Rust Implementation of the Diameter Protocol.
Overview
This library provides a Rust implementation of the Diameter protocol, as defined by RFC 6733.
Getting Started
Installation
Add this crate to your Rust project by adding the following to your Cargo.toml
:
[dependencies]
diameter-rs = "^0.7"
Usage
Diameter Client Example
Below is an example of creating a Diameter client that sends a Credit-Control-Request (CCR) message to a server and waits for a response.
use diameter::avp::flags::M;
use diameter::avp::Enumerated;
use diameter::avp::Identity;
use diameter::avp::UTF8String;
use diameter::avp::Unsigned32;
use diameter::dictionary::{self, Dictionary};
use diameter::flags;
use diameter::transport::DiameterClient;
use diameter::transport::DiameterClientConfig;
use diameter::{ApplicationId, CommandCode, DiameterMessage};
use std::sync::Arc;
#[tokio::main]
async fn main() {
// Diameter Dictionary
let dict = Dictionary::new(&[&dictionary::DEFAULT_DICT_XML]);
let dict = Arc::new(dict);
// Initialize a Diameter client and connect it to the server
let client_config = DiameterClientConfig {
use_tls: false,
verify_cert: false,
};
let mut client = DiameterClient::new("localhost:3868", client_config);
let mut handler = client.connect().await.unwrap();
let dict_ref = Arc::clone(&dict);
tokio::spawn(async move {
DiameterClient::handle(&mut handler, dict_ref).await;
});
// Create a Credit-Control-Request (CCR) Diameter message
let mut ccr = DiameterMessage::new(
CommandCode::CreditControl,
ApplicationId::CreditControl,
flags::REQUEST,
1123158611,
3102381851,
dict,
);
ccr.add_avp(264, None, M, Identity::new("host.example.com").into());
ccr.add_avp(296, None, M, Identity::new("realm.example.com").into());
ccr.add_avp(263, None, M, UTF8String::new("ses;12345888").into());
ccr.add_avp(416, None, M, Enumerated::new(1).into());
ccr.add_avp(415, None, M, Unsigned32::new(1000).into());
// Send the CCR message to the server and wait for a response
let response = client.send_message(ccr).await.unwrap();
let cca = response.await.unwrap();
println!("Received response: {}", cca);
}
Diameter Server Example
Below is an example of setting up a Diameter server that listens for incoming requests
use diameter::avp::flags::M;
use diameter::avp::Enumerated;
use diameter::avp::Identity;
use diameter::avp::UTF8String;
use diameter::avp::Unsigned32;
use diameter::dictionary::{self, Dictionary};
use diameter::flags;
use diameter::transport::DiameterServer;
use diameter::transport::DiameterServerConfig;
use diameter::DiameterMessage;
use std::sync::Arc;
#[tokio::main]
async fn main() {
// Diameter Dictionary
let dict = Dictionary::new(&[&dictionary::DEFAULT_DICT_XML]);
let dict = Arc::new(dict);
// Set up a Diameter server listening on a specific port
let mut server = DiameterServer::new("0.0.0.0:3868", DiameterServerConfig { native_tls: None })
.await
.unwrap();
// Asynchronously handle incoming requests to the server
let dict_ref = Arc::clone(&dict);
server
.listen(
move |req| {
let dict_ref2 = Arc::clone(&dict);
async move {
println!("Received request: {}", req);
// Create a response message based on the received request
let mut res = DiameterMessage::new(
req.get_command_code(),
req.get_application_id(),
req.get_flags() ^ flags::REQUEST,
req.get_hop_by_hop_id(),
req.get_end_to_end_id(),
dict_ref2,
);
// Add various Attribute-Value Pairs (AVPs) to the response
res.add_avp(264, None, M, Identity::new("host.example.com").into());
res.add_avp(296, None, M, Identity::new("realm.example.com").into());
res.add_avp(263, None, M, UTF8String::new("ses;123458890").into());
res.add_avp(416, None, M, Enumerated::new(1).into());
res.add_avp(415, None, M, Unsigned32::new(1000).into());
res.add_avp(268, None, M, Unsigned32::new(2001).into());
// Return the response
Ok(res)
}
},
dict_ref,
)
.await
.unwrap();
}
TLS
Below are examples of how to set up TLS for both the server and the client.
Server Configuration with TLS
let mut cert_file = File::open("server.crt").unwrap();
let mut certs = vec![];
cert_file.read_to_end(&mut certs).unwrap();
let mut key_file = File::open("server.key").unwrap();
let mut key = vec![];
key_file.read_to_end(&mut key).unwrap();
let pkcs8 = native_tls::Identity::from_pkcs8(&certs, &key).unwrap();
let config = DiameterServerConfig {
native_tls: Some(pkcs8),
};
Client Configuration with TLS
let client_config = DiameterClientConfig {
use_tls: true,
verify_cert: false,
};
Dependencies
~4–15MB
~198K SLoC