Echo Server

There is an initial version of a simple echo server located at nym/tools/echo-server (opens in a new tab).

This is an initial minimal implementation of an echo server built using the NymProxyServer Rust SDK abstraction that, aside from the initialisation and running of a NymProxyServer instance in the background, is essentially a vanilla TCP echo server written with tokio.

This server was initially built for the TcpProxy tests, but can be useful for developers to need a constant endpoint to ping when developing. In the future this will be deployed to a remote server so developers don't have to run their own.

Build

Run cargo build --release from nym/tools/echo-server. The binary will be in the main workspace target/release dir.

Run

Usage: echo-server [OPTIONS]
 
Options:
  -g, --gateway <GATEWAY>          Optional gateway to use
  -c, --config-path <CONFIG_PATH>  Optional config path to specify
  -e, --env <ENV>                  Optional env file - defaults to Mainnet if None
  -l, --listen-port <LISTEN_PORT>  Listen port [default: 8080]
  -h, --help                       Print help

Logging

Every 10 seconds, the server logs:

• the total number of bytes received since startup
• the total number of bytes sent since startup
• the current number of concurrent connections it has
• the total number of concurrent connections it has