proxy_protocol_rs/
validator.rs

1// Copyright (C) 2025-2026 Michael S. Klishin and Contributors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::net::SocketAddr;
16
17use crate::types::ProxyInfo;
18
19/// Validate a Proxy Protocol header before the connection is passed
20/// to the application
21pub trait HeaderValidator: Send + Sync + 'static {
22    fn validate(
23        &self,
24        header: &ProxyInfo,
25        peer_addr: SocketAddr,
26    ) -> Result<(), Box<dyn std::error::Error + Send + Sync>>;
27}
28
29/// Blanket implementation for closures
30impl<F> HeaderValidator for F
31where
32    F: Fn(&ProxyInfo, SocketAddr) -> Result<(), Box<dyn std::error::Error + Send + Sync>>
33        + Send
34        + Sync
35        + 'static,
36{
37    fn validate(
38        &self,
39        header: &ProxyInfo,
40        peer_addr: SocketAddr,
41    ) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
42        self(header, peer_addr)
43    }
44}
proxy_protocol_rs/validator.rs

proxy_protocol_rs/
validator.rs
