（8）Linux（客户端）和Windows（服务端）下socket通信实例

Linux（客户端）和Windows（服务端）下socket通信实例：

（1）首先是Windows做客户端，Linux做服务端的程序

Windows   Client端

1. #include <stdio.h>
2. #include <Windows.h>
3. #pragma comment(lib, "ws2_32.lib")
4. #define Port 5000
5. #define IP_ADDRESS "192.168.1.30"     //服务器地址
6. int main() // argc是命令行总的参数个数
7. {
8. WSADATA s; // 用来储存调用AfxSocketInit全局函数返回的Windows Sockets初始化信息
9. SOCKET ClientSocket;
10. struct sockaddr_in ClientAddr; // 一个sockaddr_in型的结构体对象
11. int ret = 0;
12. char SendBuffer[MAX_PATH]; // Windows的MAX_PATH默认是260
13. // 初始化Windows Socket
14. // WSAStartup函数对Winsock服务的初始化
15. if (WSAStartup(MAKEWORD(2, 2), &s) != 0) // 通过连接两个给定的无符号参数,首个参数为低字节
16. {
17. printf("Init Windows Socket Failed! Error: %d\n", GetLastError());
18. getchar();
19. return -1;
20. }
21. while (1)
22. {
23. // 创建一个套接口
24. // 如果这样一个套接口用connect()与一个指定端口连接
25. // 则可用send()和recv()与该端口进行数据报的发送与接收
26. // 当会话结束后，调用closesocket()
27. ClientSocket = socket(AF_INET, // 只支持ARPA Internet地址格式
28. SOCK_STREAM, // 新套接口的类型描述
29. IPPROTO_TCP); // 套接口所用的协议
30. if (ClientSocket == INVALID_SOCKET)
31. {
32. printf("Create Socket Failed! Error: %d\n", GetLastError());
33. getchar();
34. return -1;
35. }
36. ClientAddr.sin_family = AF_INET;
37. ClientAddr.sin_addr.s_addr = inet_addr(IP_ADDRESS); // 定义IP地址
38. ClientAddr.sin_port = htons(Port); // 将主机的无符号短整形数转换成网络字节顺序
39. memset(ClientAddr.sin_zero, 0X00, 8); // 函数通常为新申请的内存做初始化工作
40. // 连接Socket
41. ret = connect(ClientSocket,
42. (struct sockaddr*)&ClientAddr,
43. sizeof(ClientAddr));
44. if (ret == SOCKET_ERROR)
45. {
46. printf("Socket Connect Failed! Error:%d\n", GetLastError());
47. getchar();
48. return -1;
49. }
50. else
51. {
52. printf("Socket Connect Succeed!");
53. }
54. printf("Input Data: ");
55. while (1)
56. {
57. scanf("%s", &SendBuffer);
58. // 发送数据至服务器
59. ret = send(ClientSocket,
60. SendBuffer,
61. (int)strlen(SendBuffer), // 返回发送缓冲区数据长度
62. 0);
63. if (ret == SOCKET_ERROR)
64. {
65. printf("Send Information Failed! Error:%d\n", GetLastError());
66. getchar();
67. break;
68. }
69. break;
70. }
71. // 关闭socket
72. closesocket(ClientSocket);
73. if (SendBuffer[0] == ‘q‘) // 设定输入第一个字符为q时退出
74. {
75. printf("Quit!\n");
76. break;
77. }
78. }
79. WSACleanup();
80. getchar();
81. system("pause");
82. return 0;
83. }

Linux server端

1. #include <stdio.h>
2. #include <sys/socket.h>
3. #include <sys/types.h> /* See NOTES */
4. #include <sys/socket.h>
5. #include <arpa/inet.h>
6. #include <string.h>
7. #include<unistd.h>
8. #include <cstdlib>
9. #define SERVER_PORT 5000
10. #define LENGTH_OF_LISTEN_QUEUE 20
11. #define BUFFER_SIZE 10
12. int main() // (int argc, char* argv[])
13. {
14. struct sockaddr_in server_addr;
15. int server_socket;
16. int opt = 1;
17. bzero(&server_addr, sizeof(server_addr)); // 置字节字符串前n个字节为0，包括‘\0‘
18. server_addr.sin_family = AF_INET;
19. server_addr.sin_addr.s_addr = htons(INADDR_ANY); // 转小端,INADDR_ANY就是指定地址为0.0.0.0的地址
20. server_addr.sin_port = htons(SERVER_PORT);
21. // 创建一个Socket
22. server_socket = socket(PF_INET, SOCK_STREAM, 0);
23. if (server_socket < 0)
24. {
25. printf("Create Socket Failed!\n");
26. exit(1);
27. }
28. // bind a socket
29. setsockopt(server_socket, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
30. if(bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)))
31. {
32. printf("Server Bind Port: %d Failed!\n", SERVER_PORT);
33. exit(1);
34. }
35. // 监听Socket
36. if (listen(server_socket, LENGTH_OF_LISTEN_QUEUE))
37. {
38. printf("Server Listen Failed!\n");
39. exit(1);
40. }
41. while(1)
42. {
43. struct sockaddr_in client_addr;
44. int client_socket;
45. socklen_t length;
46. char Buffer[BUFFER_SIZE];
47. // 连接客户端Socket
48. length = sizeof(client_addr);
49. client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &length);
50. if (client_socket < 0)
51. {
52. printf("Server Accept Failed!\n");
53. break;
54. }
55. // 从客户端接收数据
56. while(1)
57. {
58. bzero(Buffer, BUFFER_SIZE);
59. length = recv(client_socket, Buffer, BUFFER_SIZE, 0);
60. if (length < 0)
61. {
62. printf("Server Recieve Data Failed!\n");
63. break;
64. }
65. if (‘q‘ == Buffer[0])
66. {
67. printf("Quit!\n");
68. break;
69. }
70. printf("%s\n", Buffer);
71. break;
72. }
73. close(client_socket);
74. }
75. close(server_socket);
76. return 0;
77. }

（2）Windows做服务端，Linux做客户端实例