44 lines
1.4 KiB
Rust
44 lines
1.4 KiB
Rust
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use tokio::{
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io::{AsyncBufReadExt, AsyncWriteExt, BufReader},
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net::TcpListener,
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};
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#[tokio::main]
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async fn main() {
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// Set up a TCP listenner to listen for incoming tcp requests
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let listener = TcpListener::bind("127.0.0.1:8080").await.unwrap();
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// First loop accept all the tcp client requests
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loop {
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// accept the requests
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let (mut socket, _addr) = listener.accept().await.unwrap();
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tokio::spawn(async move {
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// Splitting the TCP socket into read/write halves
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let (reader, mut writer) = socket.split();
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let mut buffer_reader = BufReader::new(reader);
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let mut line: String = String::new();
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// second loop keeps receving input from that one client going
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loop {
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// number of bytes read. We will truncate the buffer
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let bytes_read = buffer_reader.read_line(&mut line).await.unwrap();
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// If we received no bytes then the tcp socket must have closed
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if bytes_read == 0 {
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break;
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}
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// Does not write to every single tcp sockets that are connected
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// It only writes every single bytes in the input buffer
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writer.write_all(line.as_bytes()).await.unwrap();
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// clear the input buffer
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line.clear();
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}
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});
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}
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}
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