Diff: main.cpp

Revision:

6:dd8d1cf1cb9c

Parent:

3:3fbf0efec25a

Child:

7:88de3c8d25cb

--- a/main.cpp	Tue Jun 04 16:06:35 2013 +0100
+++ b/main.cpp	Tue Feb 14 16:43:07 2017 +0000
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 #include "mbed.h"
 #include "EthernetInterface.h"
-
-const char* ECHO_SERVER_ADDRESS = "192.168.0.51";
-const int ECHO_SERVER_PORT = 7;
-
-int main() {
+ 
+#define ECHO_SERVER_PORT   7
+ 
+int main (void) {
     EthernetInterface eth;
     eth.init(); //Use DHCP
     eth.connect();
-    printf("IP Address is %s\n", eth.getIPAddress());
+    printf("\nServer IP Address is %s\n", eth.getIPAddress());
     
-    TCPSocketConnection socket;
-    while (socket.connect(ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT) < 0) {
-        printf("Unable to connect to (%s) on port (%d)\n", ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT);
-        wait(1);
-    }
-    
-    char hello[] = "Hello World\n";
-    socket.send_all(hello, sizeof(hello) - 1);
+    TCPSocketServer server;
+    server.bind(ECHO_SERVER_PORT);
+    server.listen();
     
-    char buf[256];
-    int n = socket.receive(buf, 256);
-    buf[n] = '\0';
-    printf("%s", buf);
-    
-    socket.close();
-    eth.disconnect();
-    
-    while(true) {}
-}
+    while (true) {
+        printf("\nWait for new connection...\n");
+        TCPSocketConnection client;
+        server.accept(client);
+        client.set_blocking(false, 1500); // Timeout after (1.5)s
+        
+        printf("Connection from: %s\n", client.get_address());
+        char buffer[256];
+        while (true) {
+            int n = client.receive(buffer, sizeof(buffer));
+            if (n <= 0) break;
+            
+            // print received message to terminal
+            buffer[n] = '\0';
+            printf("Received message from Client :'%s'\n",buffer);
+            
+            // reverse the message
+            char temp;
+            for(int f = 0, l = n-1; f<l; f++,l--){
+                temp = buffer[f];
+                buffer[f] = buffer[l];
+                buffer[l] = temp;
+                }
+            
+            // print reversed message to terminal
+            printf("Sending message to Client: '%s'\n",buffer);
+            
+            // Echo received message back to client
+            client.send_all(buffer, n);
+            if (n <= 0) break;
+        }
+        
+        client.close();
+    
\ No newline at end of file