An upstream http proxy that supports websockets.
CLI upstream http/ws proxy Usage: rsintercept [OPTIONS] --upstream-address <UPSTREAM_ADDRESS> Options: -u, --upstream-address <UPSTREAM_ADDRESS> Upstream host address -l, --bind-address <BIND_ADDRESS> Bind address [default: 127.0.0.1:8080] -p, --prometheus-bind-address <PROMETHEUS_BIND_ADDRESS> Prometheus bind address [default: 127.0.0.1:9100] --trim <TRIM_LEVEL> Number of path segments to keep in metrics, 0 keeps all [default: 0] --http-host <HTTP_HOST> Host http header to use for upstream, it is left untouched by default -s, --ignore-status <IGNORE_STATUS> If specified, metrics will not include requests for which the response status is this code --tls-cert <TLS_CERT> tls certificate path --tls-pkey <TLS_PKEY> tls private key path -v, --verbose print websocket messages to stdout -j, --print-ip print connecting IP to stdout --drop-headers <DROP_HEADERS>... -h, --help Print help -V, --version Print version
The proxy exposes prometheus metrics that include the number of websocket messages received by the client, labled by the request path. For example:
# HELP rs_intercept_non_websocket_total Total HTTP requests forwarded that were not websocket # TYPE rs_intercept_non_websocket_total counter rs_intercept_non_websocket_total{path="/abc"} 2 rs_intercept_non_websocket_total{path="/def"} 1 rs_intercept_non_websocket_total{path="/hello"} 1 rs_intercept_non_websocket_total{path="/some-path"} 1 # HELP rs_intercept_websocket_messages_total Total WebSocket messages # TYPE rs_intercept_websocket_messages_total counter rs_intercept_websocket_messages_total{path="/"} 14 rs_intercept_websocket_messages_total{path="/abc"} 8 rs_intercept_websocket_messages_total{path="/abcdef"} 15 rs_intercept_websocket_messages_total{path="/some-path"} 19 # HELP rs_intercept_websocket_sessions_total Total WebSocket sessions # TYPE rs_intercept_websocket_sessions_total counter rs_intercept_websocket_sessions_total{path="/"} 1 rs_intercept_websocket_sessions_total{path="/abc"} 1 rs_intercept_websocket_sessions_total{path="/abcdef"} 2 rs_intercept_websocket_sessions_total{path="/some-path"} 1
cargo run --release -- -u ws.ifelse.io:80 --http-host ws.ifelse.io