Fixed number of sockets in TCP_Echo_Server

DemoTasks/SimpleTCPEchoServer.c

@@ -159,9 +159,8 @@ struct freertos_sockaddr xClient, xBindAddress;
 Socket_t xListeningSocket, xConnectedSocket;
 socklen_t xSize = sizeof( xClient );
 static const TickType_t xReceiveTimeOut = portMAX_DELAY;
-const BaseType_t xBacklog = 20;
+const BaseType_t xBacklog = 1;
 
-	
 #if( ipconfigUSE_TCP_WIN == 1 )
 	WinProperties_t xWinProps;
 
@@ -174,6 +173,8 @@ const BaseType_t xBacklog = 20;
 
 	/* Just to prevent compiler warnings. */
 	( void ) pvParameters;
+	
+#ifdef DEBUG_LISTEN_SOCK	
 
 	/* Attempt to open the socket. */
 	xListeningSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
@@ -221,6 +222,57 @@ const BaseType_t xBacklog = 20;
 		/* Spawn a task to handle the connection. */
 		xTaskCreate( prvServerConnectionInstance, "EchoServer", usUsedStackSize, ( void * ) xConnectedSocket, tskIDLE_PRIORITY + 1, &prvServerConnectionInstance_Handle );				
 	}
+	
+#else	/*DEBUG_LISTEN_SOCK*/
+	
+	for( ;; )
+	{	
+		/* Delete previous suspended EchoServer task if it was created. */
+		if (prvServerConnectionInstance_Handle && eSuspended == eTaskGetState( prvServerConnectionInstance_Handle) )
+		{						
+			vTaskDelete( prvServerConnectionInstance_Handle );		
+		}		
+	/* Attempt to open the socket. */
+	xListeningSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
+	configASSERT( xListeningSocket != FREERTOS_INVALID_SOCKET );
+
+	/* Set a time out so accept() will just wait for a connection. */
+	FreeRTOS_setsockopt( xListeningSocket, 0, FREERTOS_SO_RCVTIMEO, &xReceiveTimeOut, sizeof( xReceiveTimeOut ) );
+
+	/* Set the window and buffer sizes. */
+	#if( ipconfigUSE_TCP_WIN == 1 )
+	{
+		FreeRTOS_setsockopt( xListeningSocket, 0, FREERTOS_SO_WIN_PROPERTIES|FREERTOS_SO_REUSE_LISTEN_SOCKET, ( void * ) &xWinProps, sizeof( xWinProps ) );
+	}
+	#endif /* ipconfigUSE_TCP_WIN */
+
+	/* Bind the socket to the port that the client task will send to, then
+	listen for incoming connections. */
+	xBindAddress.sin_port = tcpechoPORT_NUMBER;
+	xBindAddress.sin_port = FreeRTOS_htons( xBindAddress.sin_port );
+#if (ipconfigUSE_DHCP == 0)	
+	xBindAddress.sin_addr = FreeRTOS_htonl(xNetworkAddressing.ulDefaultIPAddress);
+#endif	
+	FreeRTOS_bind( xListeningSocket, &xBindAddress, sizeof( xBindAddress ) );
+	FreeRTOS_listen( xListeningSocket, xBacklog );
+
+						
+		/* Wait for a client to connect. */	
+		xConnectedSocket = FreeRTOS_accept( xListeningSocket, &xClient, &xSize );
+		configASSERT( xConnectedSocket != FREERTOS_INVALID_SOCKET );							
+		//FreeRTOS_debug_printf(("Heap size TCP 0 = %d\n", xPortGetFreeHeapSize()));
+				
+#ifdef DEBUG		
+		size_t FreeHeapSize = xPortGetFreeHeapSize();
+		if(FreeHeapSize < 25032)//45520)
+		{			
+			FreeRTOS_printf(("[LISTEN_TASK] FreeHeapSize = %d\n", FreeHeapSize));			
+		}
+#endif		
+		/* Spawn a task to handle the connection. */
+		xTaskCreate( prvServerConnectionInstance, "EchoServer", usUsedStackSize, ( void * ) xConnectedSocket, tskIDLE_PRIORITY + 1, &prvServerConnectionInstance_Handle );				
+	}	
+#endif /*DEBUG_LISTEN_SOCK*/
 }
 /*-----------------------------------------------------------*/
 
@@ -256,7 +308,7 @@ uint8_t *pucRxBuffer;
 			lBytes = FreeRTOS_recv( xConnectedSocket, pucRxBuffer, ipconfigTCP_MSS, 0 );
 
 			/* If data was received, echo it back. */
-			if( lBytes >= 0 )
+			if( lBytes > 0 )
 			{							
 				RF_OUT_ENUM state = -1;
 				int8_t enable = -1;

Test_project_for_GD32107C-EVAL.uvoptx

@@ -153,40 +153,7 @@
           <Name>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0GD32F10x_CL -FS08000000 -FL040000 -FP0($$Device:GD32F107VC$Flash\GD32F10x_CL.FLM))</Name>
         </SetRegEntry>
       </TargetDriverDllRegistry>
-      <Breakpoint>
+      <Breakpoint/>
-        <Bp>
-          <Number>0</Number>
-          <Type>0</Type>
-          <LineNumber>752</LineNumber>
-          <EnabledFlag>1</EnabledFlag>
-          <Address>0</Address>
-          <ByteObject>0</ByteObject>
-          <HtxType>0</HtxType>
-          <ManyObjects>0</ManyObjects>
-          <SizeOfObject>0</SizeOfObject>
-          <BreakByAccess>0</BreakByAccess>
-          <BreakIfRCount>0</BreakIfRCount>
-          <Filename>.\FreeRTOS\source\FreeRTOS_TCP_IP.c</Filename>
-          <ExecCommand></ExecCommand>
-          <Expression></Expression>
-        </Bp>
-        <Bp>
-          <Number>1</Number>
-          <Type>0</Type>
-          <LineNumber>760</LineNumber>
-          <EnabledFlag>1</EnabledFlag>
-          <Address>0</Address>
-          <ByteObject>0</ByteObject>
-          <HtxType>0</HtxType>
-          <ManyObjects>0</ManyObjects>
-          <SizeOfObject>0</SizeOfObject>
-          <BreakByAccess>0</BreakByAccess>
-          <BreakIfRCount>0</BreakIfRCount>
-          <Filename>.\FreeRTOS\source\FreeRTOS_TCP_IP.c</Filename>
-          <ExecCommand></ExecCommand>
-          <Expression></Expression>
-        </Bp>
-      </Breakpoint>
       <WatchWindow1>
         <Ww>
           <count>0</count>
@@ -288,12 +255,22 @@
           <WinNumber>1</WinNumber>
           <ItemText>FreeHeapSize</ItemText>
         </Ww>
+        <Ww>
+          <count>20</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>pucRxBuffer</ItemText>
+        </Ww>
+        <Ww>
+          <count>21</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>lBytes,0x0A</ItemText>
+        </Ww>
       </WatchWindow1>
       <MemoryWindow1>
         <Mm>
           <WinNumber>1</WinNumber>
           <SubType>0</SubType>
-          <ItemText>frame</ItemText>
+          <ItemText>pucRxBuffer</ItemText>
           <AccSizeX>0</AccSizeX>
         </Mm>
       </MemoryWindow1>

Test_project_for_GD32107C-EVAL.uvprojx

@@ -339,7 +339,7 @@
             <v6Rtti>0</v6Rtti>
             <VariousControls>
               <MiscControls>-D DEBUG -Wno-pragma-pack -Wno-macro-redefined</MiscControls>
-              <Define></Define>
+              <Define>DEBUG_LISTEN_SOCK</Define>
               <Undefine></Undefine>
               <IncludePath>.\FreeRTOS\source\portable\NetworkInterface\include;.\FreeRTOS\source\include;.\FreeRTOS\source\portable\Compiler\Keil;.\DemoTasks\include;..\GigaDevice_test;.\include;.\PHY</IncludePath>
             </VariousControls>