added sendable stream

src/main.rs

@@ -1,4 +1,4 @@
-use std::{sync::mpsc, time::Duration};
+use std::{time::Duration};
 use crossbeam_channel::unbounded;
 
 use modules::{socket_handler::Socket, stream_states::stream_states_class::StreamState, message_handler::{MessageHandler, StateMessage}};
@@ -18,12 +18,14 @@ fn main() {
 
     let socket_listener = Socket::make_listener(SERVER_ADDRESS);
     let (from_socket_tx, from_socket_rx) = unbounded::<String>();
-    let (mut listener_can_run_flag, listener_join_handle) = Socket::handle_connections(socket_listener, from_socket_tx);
+    let (to_socket_tx, to_socket_rx) = unbounded::<String>();
+    let (mut listener_can_run_flag, listener_join_handle) = Socket::handle_connections(socket_listener, from_socket_tx, to_socket_rx);
     
     let (control_c_flag_tx, control_c_called_flag_rx) = sync_flag::new_syncflag(false);
     
     setup_control_c(control_c_flag_tx);
-    
+    let _outgoing = std::net::TcpStream::connect(SERVER_ADDRESS).unwrap();
+    to_socket_tx.send("this is a message".to_string()).unwrap();
     //until control_c is caught, check the queue of incoming
     //requests from the socket handler.
     while !control_c_called_flag_rx.get() {

src/modules/socket_handler.rs

@@ -1,7 +1,7 @@
 use workctl::sync_flag;
 use std::net::{TcpListener, TcpStream, Shutdown};
 use std::io::{Read, Write};
-use crossbeam_channel::Sender;
+use crossbeam_channel::{Sender, Receiver};
 use std::thread::{self, JoinHandle};
 use std::time::Duration;
 
@@ -15,14 +15,14 @@ impl Socket {
         TcpListener::bind(address).unwrap()
     }
 
-    pub fn handle_connections(listener: TcpListener, messenger_tx: Sender<String>) -> (sync_flag::SyncFlagTx, JoinHandle<()>){
+    pub fn handle_connections(listener: TcpListener, messenger_tx: Sender<String>, messenger_rx: Receiver<String>) -> (sync_flag::SyncFlagTx, JoinHandle<()>){
         let (tx, thread_stop_flag) = sync_flag::new_syncflag(true);
         
         let handle = thread::spawn(move || {
             listener.set_nonblocking(true).unwrap();
             while thread_stop_flag.get() {
                 for (stream, _addr) in listener.accept() {
-                    Socket::handle_client(stream, messenger_tx.clone(), thread_stop_flag.clone());
+                    Socket::handle_client(stream, messenger_tx.clone(), messenger_rx.clone(),  thread_stop_flag.clone());
                 }
                 thread::sleep(Duration::from_millis(100));
             }
@@ -31,12 +31,12 @@ impl Socket {
         (tx, handle)
     }
 
-    pub fn handle_client(mut stream: TcpStream, update_tx: Sender<String>, program_shutdown_flag: sync_flag::SyncFlagRx) {
+    pub fn handle_client(mut stream: TcpStream, update_tx: Sender<String>, message_rx: Receiver<String>, program_shutdown_flag: sync_flag::SyncFlagRx) {
         let mut buffer = [0; 1024];
         stream.set_read_timeout(Some(Duration::from_millis(100))).expect("Could not set a read timeout");
         while program_shutdown_flag.get() {
             match stream.read(&mut buffer) {
-                Err(_) => {continue},
+                Err(_) => {},
                 Ok(read_size) => {
                     //Tcp is supposed to have a 0 byte read if closed by client
                     if read_size == 0 || !program_shutdown_flag.get() {
@@ -48,6 +48,13 @@ impl Socket {
                     }
                 }
             }
+            match message_rx.try_recv() {
+                Err(_) => {},
+                Ok(message) => {
+                    stream.write(message.as_bytes()).unwrap();
+                    stream.flush().unwrap();
+                }
+            }
         }
         stream.shutdown(Shutdown::Both).unwrap();
     }

src/tests/socket_handler_tests.rs

@@ -1,6 +1,6 @@
 use std::sync::mpsc;
 use crossbeam_channel::unbounded;
-use std::io::{Write};
+use std::io::{Write, Read};
 use std::thread;
 use std::time::Duration;
 
@@ -33,8 +33,9 @@ fn panic_no_listener() {
 fn can_handle_messages() {
     let listener = Socket::make_listener("localhost:5004");
     let (tx_1, rx_1) = unbounded::<String>();
+    let (_stream_tx, stream_rx) = unbounded::<String>();
 
-    let (mut flag, connection_handle) = Socket::handle_connections(listener, tx_1);
+    let (mut flag, connection_handle) = Socket::handle_connections(listener, tx_1, stream_rx);
 
     let join_handle = std::thread::spawn(move || {
         let mut outgoing = std::net::TcpStream::connect("localhost:5004").unwrap();
@@ -54,18 +55,16 @@ fn can_handle_messages() {
 fn can_handle_delayed_messages() {
     let listener = Socket::make_listener("localhost:5005");
     let (tx_1, rx_1) = unbounded::<String>();
+    let (_stream_tx, stream_rx) = unbounded::<String>();
 
-    let (mut flag, connection_handle) = Socket::handle_connections(listener, tx_1);
+    let (mut flag, connection_handle) = Socket::handle_connections(listener, tx_1, stream_rx);
 
-    let join_handle = std::thread::spawn(move || {
     let mut outgoing = std::net::TcpStream::connect("localhost:5005").unwrap();
     outgoing.write("this is a test1\n".as_bytes()).unwrap();
     thread::sleep(Duration::from_millis(500));
     outgoing.write("this is a test3\n".as_bytes()).unwrap();
     drop(outgoing);
-    });
-    join_handle.join().unwrap();
-    thread::sleep(Duration::from_millis(1000));
+    thread::sleep(Duration::from_millis(500));
 
     let message = rx_1.recv().unwrap();
     println!("{}", message);
@@ -78,3 +77,34 @@ fn can_handle_delayed_messages() {
     flag.set(false);
     connection_handle.join().unwrap();
 }
+
+#[test]
+fn can_send_and_receive_on_stream() {
+    let listener = Socket::make_listener("localhost:5006");
+    let (tx_1, rx_1) = unbounded::<String>();
+    let (stream_tx, stream_rx) = unbounded::<String>();
+
+    let (mut close_socket_flag, connection_handle) = Socket::handle_connections(listener, tx_1, stream_rx);
+
+    let mut outgoing = std::net::TcpStream::connect("localhost:5006").unwrap();
+    outgoing.set_read_timeout(Some(Duration::from_millis(1000))).expect("couln't set timout");
+
+    outgoing.write("such a test!\n".as_bytes()).unwrap();
+    outgoing.flush().unwrap();
+    thread::sleep(Duration::from_millis(250));
+    assert_eq!(rx_1.try_recv().unwrap(), "such a test!\n");
+
+    stream_tx.send("this is another test!".to_string()).unwrap();
+    thread::sleep(Duration::from_millis(250));
+
+    let mut buffer = [0; 256];
+    let msg_len = outgoing.read(&mut buffer).unwrap();
+    assert!(msg_len != 0);
+    
+    let message = String::from_utf8_lossy(&buffer[0..msg_len]);
+    assert_eq!("this is another test!", message.into_owned());
+
+    drop(outgoing);
+    close_socket_flag.set(false);
+    connection_handle.join().unwrap();
+}