//servser.cpp

#include <iostream> #include <windows.h> #include <stdio.h> #include <string.h> #define IP "127.0.0.1" #define PORT 8888 #pragma comment(lib,"ws2_32.lib") using namespace std; char* GetTime(); int main() { WSADATA wsaData; WORD Ret; if ((Ret = WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)) { cout << "WSAStartup() Error Whit:" << Ret << endl; WSACleanup(); return -1; }//统一版本类型。 SOCKET sockSer, sockCli; sockSer = socket(AF_INET,SOCK_DGRAM,0); SOCKADDR_IN addrSer, addrCli; memset(&addrSer,0,sizeof(addrSer)); memset(&addrCli,0,sizeof(addrCli)); addrSer.sin_family = AF_INET; addrSer.sin_port = htons(PORT); addrSer.sin_addr.S_un.S_addr = inet_addr(IP); int len = sizeof(SOCKADDR); bind(sockSer,(SOCKADDR*)&addrSer,len); char serbuff[255]; //不需要监听连接。 while (1) { recvfrom(sockSer,serbuff,sizeof(serbuff),0,(SOCKADDR*)&addrCli,&len); cout << serbuff << endl; sendto(sockSer, GetTime(), 30, 0, (SOCKADDR*)&addrCli, len); } WSACleanup(); closesocket(sockSer); closesocket(sockCli); return 0; } char* GetTime() { char buff[255]; SYSTEMTIME sys; GetLocalTime(&sys);//初始化本地时间。 sprintf(buff,"%d:%d:%d:%d:%d:%d",sys.wYear,sys.wMonth,sys.wDay,sys.wHour,sys.wMinute,sys.wSecond); return buff; } #include <iostream> #include <windows.h> #define PORT 8888 #define IP "127.0.0.1" using namespace std; #pragma comment(lib,"ws2_32.lib") int main() { DWORD Ret; WSAData wsaData; if ((Ret = WSAStartup(MAKEWORD(2, 2), &wsaData)) != 0) { cout <<"WSAStartup() Error Wiht : "<< Ret << endl; WSACleanup(); return -1; } SOCKET sockCli = socket(AF_INET,SOCK_DGRAM,0); SOCKADDR_IN addrSer; addrSer.sin_family = AF_INET; addrSer.sin_port = htons(PORT); addrSer.sin_addr.S_un.S_addr = inet_addr(IP); int len = sizeof(addrSer); const char timebuff[] = "times"; char serbuff[255]; connect(sockCli,(SOCKADDR*)&addrSer,len); while (1) { sendto(sockCli,timebuff,strlen(timebuff)+1,0,(SOCKADDR*)&addrSer,len); recvfrom(sockCli,serbuff,sizeof(serbuff),0,(SOCKADDR*)&addrSer,&len); cout <<timebuff<<serbuff << endl; Sleep(2000); } return 0; }

//linux:
//ser.cpp

#include <iostream> #include <sys/socket.h> #include <arpa/inet.h> #include <netinet/in.h> #include <string.h> #define PORT 8888 #define IP "127.0.0.1" using namespace std; int main() { int sockSer = socket(AF_INET,SOCK_DGRAM,0); sockaddr_in addrSer,addrCli; addrSer.sin_family = AF_INET; addrSer.sin_port = htons(PORT); addrSer.sin_addr.s_addr = inet_addr(IP); socklen_t len=sizeof(sockaddr); bind(sockSer,(sockaddr*)&addrSer,len); char serbuff[255]="!Hello !I am server!"; char clibuff[255]; while(1) { recvfrom(sockSer,clibuff,sizeof(clibuff),0,(sockaddr*)&addrSer,&len); cout<<"CLient Say:"<<clibuff<<endl; sendto(sockSer,serbuff,strlen(serbuff)+1,0,(sockaddr*)&addrSer,len); } return 0; }

//cli.cpp

#include <iostream> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <string.h> #include <stdlib.h> #include <netinet/in.h> #include <arpa/inet.h> #define PORT 8888 #define IP "127.0.0.1" using namespace std; int main() { int sockCli = socket(AF_INET,SOCK_DGRAM,0); sockaddr_in addrSer; addrSer.sin_family = AF_INET; addrSer.sin_port = htons(PORT); addrSer.sin_addr.s_addr = inet_addr(IP); socklen_t len = sizeof(sockaddr); char clibuff[]="hello! I am client!"; char serbuff[255]; while(1) { sendto(sockCli,clibuff,strlen(clibuff)+1,0,(sockaddr*)&addrSer,len); recvfrom(sockCli,serbuff,sizeof(serbuff),0,(sockaddr*)&addrSer,&len); cout<<"Server Say:>"<<serbuff<<endl; sleep(2); } return 0; }

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