add templates for tcp client/server

windows/templates/mysql.template

@@ -4,8 +4,8 @@ Name=MySQL(MyriaDB)
 Icon=mysql.ico
 Description=A Sqlite3 API Example
 Description[zh_CN]=MySQL数据库示例程序
-Category=Utilities
-Category[zh_CN]=工具
+Category=Database
+Category[zh_CN]=数据库
 
 [Unit0]
 CName=main.c

windows/templates/sqlite.template

@@ -4,8 +4,8 @@ Name=Sqlite3
 Icon=sqlite.ico
 Description=A Sqlite3 API Example
 Description[zh_CN]=Sqlite3 示例程序
-Category=Utilities
-Category[zh_CN]=工具
+Category=Database
+Category[zh_CN]=数据库
 
 [Unit0]
 CName=main.c

windows/templates/tcpclient.template

@@ -0,0 +1,20 @@
+[Template]
+ver=2
+Name=TCP Client
+Name[zh_CN]=TCP客户端
+Icon=tcpclient.ico
+Description=A winsock2 tcp client
+Description[zh_CN]=基于Winsock2的TCP客户端程序示例
+Category=Network
+Category[zh_CN]=网络
+
+[Unit0]
+CName=main.c
+C=tcpclient_c.txt
+
+[Project]
+UnitCount=1
+Type=1
+Compiler=
+CppCompiler=
+Linker=-lws2_32

windows/templates/tcpclient_c.txt

@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <string.h>
+
+#include <winsock2.h>  
+#define PORT 8888
+#define SERVER_IP "127.0.0.1"
+#define  BUFFER_SIZE 4196
+
+const char* kExitFlag = "exit";
+
+int main() {
+	// 初始化socket dll。
+	WORD winsock_version = MAKEWORD(2,2);
+	WSADATA wsa_data;
+	if (WSAStartup(winsock_version, &wsa_data) != 0) {
+		printf("Failed to init socket!\n");
+		return 1;
+	}
+	
+	SOCKET client_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if (client_socket == INVALID_SOCKET) {
+		printf("Failed to create server socket!\n");
+		return 2;
+	}
+	
+	sockaddr_in server_addr;
+	server_addr.sin_family = AF_INET;
+	server_addr.sin_port = htons(PORT);
+	server_addr.sin_addr.S_un.S_addr = inet_addr(SERVER_IP);
+	if (connect(client_socket, (LPSOCKADDR)&server_addr, sizeof(server_addr)) == SOCKET_ERROR) {
+		printf("Failed to connect server: %ld !\n", GetLastError());
+		return 3;
+	}
+	
+	char recv_data[BUFFER_SIZE+1];
+	
+	while (true) {
+		char data[BUFFER_SIZE+1];
+		printf("Input data: ");
+		scanf("%s",data);
+		if (send(client_socket, data, strlen(data), 0) < 0) {
+			printf("Failed to send data!\n");
+			break;
+		}
+		
+		int ret = recv(client_socket, recv_data, BUFFER_SIZE, 0);
+		if (ret < 0) {
+			printf("Failed to receive data!\n");
+			break;
+		}
+		recv_data[ret]=0; // correctly ends received string
+		
+		printf("Receive data from server: \"%s\"\n",recv_data);
+		
+		if (data == kExitFlag) {
+			printf("Exit!\n");
+			break;
+		}
+	}
+	
+	closesocket(client_socket);
+	WSACleanup();
+	
+	return 0;
+}

windows/templates/tcpserver.template

@@ -0,0 +1,20 @@
+[Template]
+ver=2
+Name=TCP Server
+Name[zh_CN]=TCP服务器
+Icon=tcpserver.ico
+Description=A winsock2 tcp server demo
+Description[zh_CN]=基于Winsock2的TCP服务器程序示例
+Category=Network
+Category[zh_CN]=网络
+
+[Unit0]
+CName=main.c
+C=tcpserver_c.txt
+
+[Project]
+UnitCount=1
+Type=1
+Compiler=
+CppCompiler=
+Linker=-lws2_32

windows/templates/tcpserver_c.txt

@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <string.h>
+
+#include <winsock2.h> 
+
+#define PORT 8888
+#define  BUFFER_SIZE 4196
+
+const char* kExitFlag = "exit";
+
+int main() {
+	WORD winsock_version = MAKEWORD(2,2);
+	WSADATA wsa_data;
+	if (WSAStartup(winsock_version, &wsa_data) != 0) {
+		printf("Failed to init socket dll!\n");
+		return 1;
+	}
+	
+	SOCKET server_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if (server_socket == INVALID_SOCKET) {
+		printf("Failed to create server socket!\n");
+		return 2;
+	}
+	
+	sockaddr_in server_addr;
+	server_addr.sin_family = AF_INET;
+	server_addr.sin_port = htons(PORT);
+	server_addr.sin_addr.S_un.S_addr = INADDR_ANY;
+	
+	if (bind(server_socket, (LPSOCKADDR)&server_addr, sizeof(server_addr)) == SOCKET_ERROR) {
+		printf("Failed to bind port!\n");
+		return 3;
+	}
+	
+	if (listen(server_socket, 10)) {
+		printf("Failed to listen!\n");
+		return 4;
+	}
+	
+	sockaddr_in client_addr;
+	int client_addr_len = sizeof(client_addr);
+	printf("Wait for connecting...\n");
+	
+	SOCKET client_socket = accept(server_socket, (SOCKADDR*)&client_addr, &client_addr_len);
+	if (client_socket == INVALID_SOCKET) {
+		printf("Failed to accept!\n");
+		return 5;
+	}
+	
+	printf("Succeed to receive a connection: %s\n" , inet_ntoa(client_addr.sin_addr));
+	
+	char recv_buf[BUFFER_SIZE+1];
+	while (true) {
+		int ret = recv(client_socket, recv_buf, BUFFER_SIZE, 0);
+		if (ret < 0) {
+			printf("Failed to receive data!\n");
+			break;
+		}
+		recv_buf[ret]=0; // correctly ends received string
+		
+		printf("Receive from Client: \"%s\" \n", recv_buf);
+		if (strcmp(kExitFlag,recv_buf)==0) {
+			send(client_socket, kExitFlag, sizeof(kExitFlag), 0);			
+			printf("Exit!\n");
+			break;
+		}
+		
+		const char* send_data = "Hello, Tcp Client!\n";
+		send(client_socket, send_data, strlen(send_data), 0);
+	}
+	
+	closesocket(client_socket);
+	closesocket(server_socket);
+	
+	WSACleanup();
+	
+	return 0;
+}