UDP通信接收端，接收二维数组，内容为0与1
1: using System;
2: using System.Net;
3: using System.Net.Sockets;
4: using System.Text;
5:
6:
7: public class UDPListener
8: {
9: private const int listenPort = 5050;
10: private const int Height = 200;
11: private const int Width = 100;
12: private static void StartListener()
13: {
14: bool[,] test = new bool[Height, Width]; //二维数组的定义方式
15: byte[,] test1 = new byte[Height, Width];
16: UdpClient listener = new UdpClient(listenPort); //本机侦听的端口号实例化。
17: IPEndPoint groupEP = new IPEndPoint(IPAddress.Any, listenPort); //实例化
18:
19: try
20: {
21: long m = 0;
22: int n = 0; //必须为int型，不然会造成溢出。不能为byte，byte就255.
23: int i = 0,j = 0;
24: while (true)
25: {
26: n = 0;
27: Console.WriteLine("Waiting for broadcast");
28: byte[] bytes = listener.Receive(ref groupEP);
29: for (i = 0; i < Height; i++)
30: {
31: for (j = 0; j < Width; j++)
32: {
33: test[i, j] = BitConverter.ToBoolean(bytes,n); //将读到的bytes转换为bool类型的数据，即ture 和 false。
34: n++;
35: if (test[i, j] == true) //将此true 和 false的数组转为只有0与1存在的数组。
36: test1[i,j] = 1;
37: else
38: test1[i,j] = 0;
39: }
40: }
41: for (i = 0; i < Height; i++)
42: {
43: for (j = 0; j < Width; j++)
44: {
45: Console.Write(test1[i,j]) ; //调用控制台程序输出即可。
46: }
47: Console.WriteLine();
48: }
49:
50: //Console.WriteLine("Received broadcast from {0} : {1} hava received {2} times \n",
51: // groupEP.ToString(),Encoding.ASCII.GetString(bytes, 0, bytes.Length),m);
52: }
53:
54: }
55: catch (Exception e)
56: {
57: Console.WriteLine(e.ToString());
58: }
59: //finally
60: //{
61: // //listener.Close();
62: //}
63: }
64:
65: public static int Main()
66: {
67: StartListener();
68:
69: return 0;
70: }
71: }
UDP接收端小程序，将发送端发送过来的数据转换为稀疏矩阵.
下面是发送端程序:
1: #include <Winsock2.h>
2: #pragma comment(lib,"WS2_32.lib")
3: #include <stdio.h>
4: #include<iostream>
5: #include <string>
6: #include<vector>
7: using namespace std;
8: //服务器端口号为5050
9: #define DEFAULT_PORT 5050
10: //缓冲区长度
11: #define DATA_BUFFER 1024
12:
13: void main(int argc,char *argv[])
14: {
15:
16:
17: /*matrix.Num = 1;
18: //matrix.point = new Point[2];
19: memset(&matrix,0,sizeof(matrix));
20: matrix.point[0].x = 1;
21: matrix.point[0].y = 2;
22: matrix.point[0].value = 3;
23: matrix.point[0].U = 4;
24: matrix.point[1].x = 5;
25: matrix.point[1].y = 6;
26: matrix.point[1].value = 7;
27: matrix.point[1].U = 8;
28: int n = 2;
29: int len = 2*sizeof(Point)+2;
30: vector<char> str(len);//声明变长数组
31: //char* str = new char[n];
32: //memset(&str,0,sizeof(str));//将str，赋值0，长度为sizeof
33: memcpy(&str,(char*)&matrix,len);//将matrix里面的值，赋值给str，长度sizeof。与上面刚好相反。
34:
35: //char *buffer=(char *)&matrix;
36: */
37:
38: WSADATA wsaData;
39: SOCKET sClient;
40: int iPort=5050;
41: //服务器地址长度
42: int iLen;
43: //接收数据的缓冲
44: int iSend;
45: int iRecv;
46: //要发送给服务器的信息
47: char send_buf[]="I am a client.";
48: //接收数据的缓冲区
49: char recv_buf[DATA_BUFFER];
50: //服务器端地址
51: struct sockaddr_in ser;
52: //处理命令行中
53: //接收数据的缓冲区初始化
54: memset(recv_buf,0,sizeof(recv_buf));
55: if(WSAStartup(MAKEWORD(2,2),&wsaData)!=0)
56: {
57: printf("Failed to load Winsock.\n");
58: return;
59: }
60: char map[10][20];
61: for(int i = 0;i < 10;i++)
62: for(int j = 0;j < 20;j++)
63: map[i][j] = 1;
64:
65: map[0][0] = 0; // for test
66: map[0][1] = 0;
67: map[0][2] = 0;
68: //map[0][1] = 0;
69: //for(int i = 0;i < 10;i++)
70: // for(int j = 0;j < 20;j++)
71: // sendData.obs[i][j] = map[i][j]; //那时候想着把二维数组封装在结构体里面，然后将结构体作为一个对象，通过UDP发送过去。
72: //后来发现完全没必要，数组本身我们也可以理解为一个对象，直接发送即可。
73: //建立服务器端地址
74: ser.sin_family=AF_INET;
75: ser.sin_port=htons(iPort);
76: ser.sin_addr.s_addr=inet_addr("127.0.0.1");
77: //建立客户端数据报套接口
78: sClient=socket(AF_INET,SOCK_DGRAM,0);
79: long k=0;
80: while (1)
81: {
82: if(sClient==INVALID_SOCKET)
83: {
84: printf("socket()Failed：%d\n",WSAGetLastError());
85: return;
86: }
87: //向服务器发送数据
88: Sleep(5);//暂停一秒
89: iSend=sendto(sClient,(char*)&map,sizeof(map),0,(struct sockaddr*)&ser,iLen);
90: k=k+1;
91: if(iSend==SOCKET_ERROR)
92: {
93: printf("sendto()Failed：%d\n",WSAGetLastError());
94: return;
95: }
96: else if(iSend==0)
97: return;
98: else
99: printf("sendto()succeeded. have sent %d times \n",k);
100:
101: //从服务器接收数据
102: //iRecv=recvfrom(sClient,recv_buf,sizeof(recv_buf),0,(struct sockaddr*)&ser,&iLen);
103: //if(iRecv==SOCKET_ERROR)
104: //{
105: // printf("recvfrom()Failed.：%d\n",WSAGetLastError());
106: // return;
107: //}
108: //else if(iRecv==0)
109: // return;
110: //else
111: //{
112: // //显示从服务器收到的信息
113: // printf("recvfrom()：%s\n",recv_buf);
114: // printf("---------------------------\n");
115: //}
116:
117: }
118: closesocket(sClient);
119: WSACleanup();
120: }
