A asynchronous library/app for intercepting/sniffing TCP requests, modifying headers and responses.
To Install RServer, Please use the following command :
cargo install rserverHow to use the RServer to intercept/sniff TCP requests. RServer currently runs on 8080 port by default.
To run RServer, use the folowing command :
rserverPlease set the browser/system proxy as host 127.0.0.1 and port 8080 (default port of RServer) to use Rserver for intercepting all requests.
If you directly want to test RServer installation without doing the above step, please run the below command :
https_proxy=127.0.0.1:8080 curl https://www.google.comrserver [OPTIONS]
FLAGS:
--help Prints help information
-V, --version Prints version information
OPTIONS:
--enable-proxy <enable-proxy> Enable proxy flag [default: false]
-h, --host <host> Server host [default: 127.0.0.1]
-p, --port <port> Server port [default: 8080]
--proxy-host <proxy-host> Proxy host
--proxy-port <proxy-port> Proxy port
use rserver::Config;
use rserver::Server;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let config = Config::default();
let server = Server::new(config);
server.start().await
}- Asynchronous server.
- Add HTTPS / CONNECT method support.
- Minor bug fixes & other improvements.
- Modular code
How to read the stream data and return stream data & its length.
/// Read the stream data and return stream data & its length
fn read_stream(stream: &mut TcpStream) -> (Vec<u8>, usize) {
let buffer_size = 512;
let mut request_buffer = vec![];
// let us loop & try to read the whole request data
let mut request_len = 0usize;
loop {
let mut buffer = vec![0; buffer_size];
match stream.read(&mut buffer) {
Ok(n) => {
if n == 0 {
break;
} else {
request_len += n;
// we need not read more data in case we have read less data than buffer size
if n < buffer_size {
// let us only append the data how much we have read rather than complete existing buffer data
// as n is less than buffer size
request_buffer.append(&mut buffer[..n].to_vec()); // convert slice into vec
break;
} else {
// append complete buffer vec data into request_buffer vec as n == buffer_size
request_buffer.append(&mut buffer);
}
}
}
Err(e) => {
println!("Error in reading stream data: {:?}", e);
break;
}
}
}
(request_buffer, request_len)
}To-Do
- Modifying/replacing Request Headers
- Modifying/replacing Reponse Headers