noxy 0.0.7

HTTP forward and reverse proxy with a pluggable tower middleware pipeline
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

mod common;

use axum::Router;
use axum::routing::get;
use axum_server::tls_rustls::RustlsConfig;
use common::*;
use noxy::http::HttpService;
use noxy::middleware::ModifyHeaders;
use rcgen::{CertificateParams, KeyPair};
use tower::Layer;

#[tokio::test]
async fn modify_headers_sets_request_header() {
    let upstream_addr = start_echo_upstream().await;

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = ModifyHeaders::new().set_request("x-custom", "injected");
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .send()
        .await
        .unwrap();

    let body = resp.text().await.unwrap();
    assert!(
        body.contains("x-custom: injected"),
        "upstream should see x-custom header, got:\n{body}"
    );
}

#[tokio::test]
async fn modify_headers_removes_request_header() {
    let upstream_addr = start_echo_upstream().await;

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = ModifyHeaders::new().remove_request("x-remove-me");
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .header("x-remove-me", "should-be-gone")
        .send()
        .await
        .unwrap();

    let body = resp.text().await.unwrap();
    assert!(
        !body.contains("x-remove-me"),
        "upstream should not see x-remove-me header, got:\n{body}"
    );
}

#[tokio::test]
async fn modify_headers_sets_response_header() {
    let upstream_addr = start_upstream("hello").await;

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = ModifyHeaders::new().set_response("x-custom", "injected");
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .send()
        .await
        .unwrap();

    assert_eq!(
        resp.headers().get("x-custom").unwrap().to_str().unwrap(),
        "injected"
    );
}

#[tokio::test]
async fn modify_headers_removes_response_header() {
    install_crypto_provider();
    let key_pair = KeyPair::generate().unwrap();
    let params = CertificateParams::new(vec!["localhost".to_string()]).unwrap();
    let cert = params.self_signed(&key_pair).unwrap();
    let cert_der = cert.der().to_vec();
    let key_der = key_pair.serialized_der().to_vec();

    let config = RustlsConfig::from_der(vec![cert_der], key_der)
        .await
        .unwrap();

    let app = Router::new().route(
        "/",
        get(|| async {
            (
                [(
                    http::header::HeaderName::from_static("x-remove-me"),
                    "present",
                )],
                "hello",
            )
        }),
    );

    let handle = axum_server::Handle::new();
    let listener_handle = handle.clone();

    tokio::spawn(async move {
        axum_server::bind_rustls("127.0.0.1:0".parse().unwrap(), config)
            .handle(handle)
            .serve(app.into_make_service())
            .await
            .unwrap();
    });

    let upstream_addr = listener_handle.listening().await.unwrap();

    let proxy_addr = start_proxy(vec![Box::new(|inner: HttpService| {
        let layer = ModifyHeaders::new().remove_response("x-remove-me");
        tower::util::BoxService::new(layer.layer(inner))
    })])
    .await;
    let client = http_client(proxy_addr);

    let resp = client
        .get(format!("https://localhost:{}/", upstream_addr.port()))
        .send()
        .await
        .unwrap();

    assert!(
        resp.headers().get("x-remove-me").is_none(),
        "x-remove-me should have been removed"
    );
    assert_eq!(resp.text().await.unwrap(), "hello");
}