More csharp udp

Author: calaldees

teachprogramming/static/language_reference/languages/csharp/Makefile

@@ -1,14 +1,14 @@
 DOCKER_IMAGE:=dotnet
-DOCKER_RUN:=docker run --rm -it --volume ${PWD}:/app/:ro -p 5005:5005/udp --volume /app/bin --volume /app/obj ${DOCKER_IMAGE}
+DOCKER_RUN:=docker run --rm -it --volume ${PWD}:/app/:ro --volume /app/bin --volume /app/obj
 
 compile_and_run_current_folder_in_container:
-	${DOCKER_RUN}
+	${DOCKER_RUN} ${DOCKER_IMAGE}
 build:
 	mkdir -p bin obj
 	docker build --tag ${DOCKER_IMAGE} .
 run:
 	docker run --rm -it ${DOCKER_IMAGE}
 shell:
-	${DOCKER_RUN} /bin/sh
+	${DOCKER_RUN} --publish 5005:5005/udp ${DOCKER_IMAGE} /bin/sh
 clean:
 	rm -rf bin obj

teachprogramming/static/language_reference/languages/csharp/csharp.cs

@@ -525,13 +525,6 @@ void http_request_json() {
 
   }
 
-  void network_udp_send() {
-    // TODO https://stackoverflow.com/q/20038943/3356840  // VER: network_udp_send
-  }
-  void network_udp_recv() {
-    // TODO https://stackoverflow.com/q/20038943/3356840  // VER: network_udp_recv
-  }
-
 
 /*
 Named params
@@ -608,8 +601,6 @@ static int add(ref int a, int b) {
       sort();
       http_request();
       http_request_json();
-      network_udp_send();
-      network_udp_recv();
   }
   public static void Main(string[] args) {new Program();}
 }

teachprogramming/static/language_reference/languages/csharp/udp.cs

@@ -4,31 +4,38 @@
 // dotnet run --p StartupObject=UdpNamespace.Udp
 
 using System;
-using System.Net;
-using System.Net.Sockets;
-using System.Text;
+using System.Net;           // VER: network_udp_send,network_udp_recv
+using System.Net.Sockets;   // VER: network_udp_send,network_udp_recv
+using System.Text;          // VER: network_udp_send,network_udp_recv
 
 namespace UdpNamespace {
 public class Udp {
     Udp() {
-        Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+        Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);   // VER: network_udp_send,network_udp_recv
 
         // ping host.docker.internal -> 192.168.5.2
         //IPEndPoint addr = new IPEndPoint(IPAddress.Parse("192.168.5.2"), 64488);
+
+        IPEndPoint addr = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 5005); // VER: network_udp_send
+        byte[] data = Encoding.ASCII.GetBytes("Hello World!");                // VER: network_udp_send
+        sock.SendTo(data, addr);                                              // VER: network_udp_send
+        Console.WriteLine($"Bound to {sock.LocalEndPoint}");                  // VER: network_udp_send
+
         /*
-        IPEndPoint addr = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 5005);
-        byte[] data = Encoding.ASCII.GetBytes("Hello World!");
-        sock.SendTo(data, addr);
-        Console.WriteLine($"Bound to {sock.LocalEndPoint}");
+        verified with
+            docker exec -it e0cdcbd43842 /bin/sh
+            nc -u 127.0.0.1 5005
+        So it's something wrong with udp to the container
         */
 
-        sock.Bind(new IPEndPoint(IPAddress.Any, 5005));
-        byte[] buf = new byte[1024];
-        while (true) {
-            int bytesReceived = sock.Receive(buf);
-            String msg = System.Text.Encoding.UTF8.GetString(buf, 0, bytesReceived);
-            Console.WriteLine($"received bytes: {msg} from ???");
-        }
+        //sock.Bind(new IPEndPoint(IPAddress.Any, 5005));        // VER: network_udp_recv
+        byte[] buf = new byte[1024];                             // VER: network_udp_recv
+        while (true) {                                           // VER: network_udp_recv
+            //Console.WriteLine($"Read {sock.LocalEndPoint}");
+            int bytesReceived = sock.Receive(buf);               // VER: network_udp_recv
+            String msg = System.Text.Encoding.UTF8.GetString(buf, 0, bytesReceived);  // VER: network_udp_recv
+            Console.WriteLine($"received bytes: {msg} from ???"); // VER: network_udp_recv
+        }                                                         // VER: network_udp_recv
     }
     public static void Main(string[] args) {new Udp();}
 }

teachprogramming/static/language_reference/languages/java/Java.java

@@ -437,8 +437,6 @@ public Java() {
     define_map();
     define_set();
     function_with_param_function();
-    network_udp_send();
-    network_udp_recv();
   }
 
 }