有没有windows下c语言实现udp协议的代码
Posted
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了有没有windows下c语言实现udp协议的代码相关的知识,希望对你有一定的参考价值。
Windows下C语言的Socket编程例子(TCP和UDP)一。 <TCP>
server端:
复制代码
1 #include "stdafx.h"
2 #include <stdio.h>
3 #include <winsock2.h>
4
5 #pragma comment(lib,"ws2_32.lib")
6
7 int main(int argc, char* argv[])
8
9 //初始化WSA
10 WORD sockVersion = MAKEWORD(2,2);
11 WSADATA wsaData;
12 if(WSAStartup(sockVersion, &wsaData)!=0)
13
14 return 0;
15
16
17 //创建套接字
18 SOCKET slisten = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
19 if(slisten == INVALID_SOCKET)
20
21 printf("socket error !");
22 return 0;
23
24
25 //绑定IP和端口
26 sockaddr_in sin;
27 sin.sin_family = AF_INET;
28 sin.sin_port = htons(8888);
29 sin.sin_addr.S_un.S_addr = INADDR_ANY;
30 if(bind(slisten, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET_ERROR)
31
32 printf("bind error !");
33
34
35 //开始监听
36 if(listen(slisten, 5) == SOCKET_ERROR)
37
38 printf("listen error !");
39 return 0;
40
41
42 //循环接收数据
43 SOCKET sClient;
44 sockaddr_in remoteAddr;
45 int nAddrlen = sizeof(remoteAddr);
46 char revData[255];
47 while (true)
48
49 printf("等待连接...\\n");
50 sClient = accept(slisten, (SOCKADDR *)&remoteAddr, &nAddrlen);
51 if(sClient == INVALID_SOCKET)
52
53 printf("accept error !");
54 continue;
55
56 printf("接受到一个连接:%s \\r\\n", inet_ntoa(remoteAddr.sin_addr));
57
58 //接收数据
59 int ret = recv(sClient, revData, 255, 0);
60 if(ret > 0)
61
62 revData[ret] = 0x00;
63 printf(revData);
64
65
66 //发送数据
67 char * sendData = "你好,TCP客户端!\\n";
68 send(sClient, sendData, strlen(sendData), 0);
69 closesocket(sClient);
70
71
72 closesocket(slisten);
73 WSACleanup();
74 return 0;
75
复制代码
client端:
复制代码
1 #include "stdafx.h"
2 #include <WINSOCK2.H>
3 #include <STDIO.H>
4
5 #pragma comment(lib,"ws2_32.lib")
6
7
8 int main(int argc, char* argv[])
9
10 WORD sockVersion = MAKEWORD(2,2);
11 WSADATA data;
12 if(WSAStartup(sockVersion, &data) != 0)
13
14 return 0;
15
16
17 SOCKET sclient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
18 if(sclient == INVALID_SOCKET)
19
20 printf("invalid socket !");
21 return 0;
22
23
24 sockaddr_in serAddr;
25 serAddr.sin_family = AF_INET;
26 serAddr.sin_port = htons(8888);
27 serAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
28 if (connect(sclient, (sockaddr *)&serAddr, sizeof(serAddr)) == SOCKET_ERROR)
29
30 printf("connect error !");
31 closesocket(sclient);
32 return 0;
33
34 char * sendData = "你好,TCP服务端,我是客户端!\\n";
35 send(sclient, sendData, strlen(sendData), 0);
36
37 char recData[255];
38 int ret = recv(sclient, recData, 255, 0);
39 if(ret > 0)
40
41 recData[ret] = 0x00;
42 printf(recData);
43
44 closesocket(sclient);
45 WSACleanup();
46 return 0;
47
复制代码
二. <UDP>
SERVER 端
复制代码
1 #include "stdafx.h"
2 #include <stdio.h>
3 #include <winsock2.h>
4
5 #pragma comment(lib, "ws2_32.lib")
6
7 int main(int argc, char* argv[])
8
9 WSADATA wsaData;
10 WORD sockVersion = MAKEWORD(2,2);
11 if(WSAStartup(sockVersion, &wsaData) != 0)
12
13 return 0;
14
15
16 SOCKET serSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
17 if(serSocket == INVALID_SOCKET)
18
19 printf("socket error !");
20 return 0;
21
22
23 sockaddr_in serAddr;
24 serAddr.sin_family = AF_INET;
25 serAddr.sin_port = htons(8888);
26 serAddr.sin_addr.S_un.S_addr = INADDR_ANY;
27 if(bind(serSocket, (sockaddr *)&serAddr, sizeof(serAddr)) == SOCKET_ERROR)
28
29 printf("bind error !");
30 closesocket(serSocket);
31 return 0;
32
33
34 sockaddr_in remoteAddr;
35 int nAddrLen = sizeof(remoteAddr);
36 while (true)
37
38 char recvData[255];
39 int ret = recvfrom(serSocket, recvData, 255, 0, (sockaddr *)&remoteAddr, &nAddrLen);
40 if (ret > 0)
41
42 recvData[ret] = 0x00;
43 printf("接受到一个连接:%s \\r\\n", inet_ntoa(remoteAddr.sin_addr));
44 printf(recvData);
45
46
47 char * sendData = "一个来自服务端的UDP数据包\\n";
48 sendto(serSocket, sendData, strlen(sendData), 0, (sockaddr *)&remoteAddr, nAddrLen);
49
50
51 closesocket(serSocket);
52 WSACleanup();
53 return 0;
54
复制代码
CLIENT 端
复制代码
1 #include "stdafx.h"
2 #include <stdio.h>
3 #include <winsock2.h>
4
5 #pragma comment(lib, "ws2_32.lib")
6
7 int main(int argc, char* argv[])
8
9 WORD socketVersion = MAKEWORD(2,2);
10 WSADATA wsaData;
11 if(WSAStartup(socketVersion, &wsaData) != 0)
12
13 return 0;
14
15 SOCKET sclient = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
16
17 sockaddr_in sin;
18 sin.sin_family = AF_INET;
19 sin.sin_port = htons(8888);
20 sin.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
21 int len = sizeof(sin);
22
23 char * sendData = "来自客户端的数据包.\\n";
24 sendto(sclient, sendData, strlen(sendData), 0, (sockaddr *)&sin, len);
25
26 char recvData[255];
27 int ret = recvfrom(sclient, recvData, 255, 0, (sockaddr *)&sin, &len);
28 if(ret > 0)
29
30 recvData[ret] = 0x00;
31 printf(recvData);
32
33
34 closesocket(sclient);
35 WSACleanup();
36 return 0;
37 参考技术A 首先你需要一个平台!软件平台!VC等!然后 找到uIP1.0或者其他网络协议的可控组件!一般只要你按照组件的步骤去配置参数 都没什么问题的! 参考技术B 使用 WIN 的SDK,可以的
~~~~~~~~
Java之UDP协议 发送与接收简单实现代码
SendDemo:
package com.renhongwei.demo_01; import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.SocketException; import java.net.UnknownHostException; /* * UDP数据发送端 */ public class SendDemo { public static void main(String[] args) throws IOException { // 创建socket对象 DatagramSocket ds = new DatagramSocket(); // 创建打包数据 byte[] bys = "Hello,world".getBytes(); int length = bys.length; String host = "renhongwei-pc"; InetAddress address = InetAddress.getByName(host); int port = 10086; DatagramPacket dp = new DatagramPacket(bys,length,address,port); // 发送数据 ds.send(dp); // 释放资源 ds.close(); } }
ReceiveDemo:
package com.renhongwei.demo_01; import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.SocketException; /* * UDP接收数据端 */ public class ReceiveDemo { public static void main(String[] args) throws IOException { // 设置端口 int port = 10086; // 创建socket对象 DatagramSocket ds = new DatagramSocket(port); // 创建数据包(接收容器) byte[] bys = new byte[1024]; int length = bys.length; DatagramPacket dp = new DatagramPacket(bys,length); // 调用socket方法接收数据 ds.receive(dp); // 获取IP地址 InetAddress address = dp.getAddress(); String ip = address.getHostAddress(); // 解析数据包 byte[] bys2 = dp.getData(); int length2 = dp.getLength(); String str = new String(bys,0,length2); System.out.println(ip + "----" + str); // 释放资源 ds.close(); } }
以上是关于有没有windows下c语言实现udp协议的代码的主要内容,如果未能解决你的问题,请参考以下文章
用C语言实现基于UDP协议的文件传输系统,其中服务端接受和发送文件需要用到哪些函数?
谁能给个C语言socket 通信,用UDP协议的代码例子。。