socket c++ tcp阻塞 非阻塞总结

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1、0、可运行实例及基本知识1、如何设置socket函数的非阻塞调用？2、深入CSocket编程之阻塞和非阻塞模式3、SOCKET类的设计和实现服务器#include"stdafx.h"#include#include#include#include#include#include#pragmacomment(lib,"ws2_32.lib")#defineSERVPORT7861

2、/*服务器监听端口号*/#defineMAXDATASIZE100#defineBACKLOG10usingnamespacestd;std::vectorclient_fd;charbuf[MAXDATASIZE];DWORDWINAPIqtPingServerThreadFunc(LPVOIDlpThreadParameter);int_tmain(intargc,_TCHAR*argv[]){SOCKETsockfd;/*sock_fd：监听socket；client_fd：数

3、据传输socket*/structsockaddr_inmy_addr;/*本机地址信息*/structsockaddr_inremote_addr;/*客户端地址信息*/charszMsg[]="hello";WORDwVersionRequested;WSADATAwsaData;interr;wVersionRequested=MAKEWORD(2,0);err=WSAStartup(wVersionRequested,&wsaData);if(0!=err){cout<<"Socketfai

4、led";return0;}if(LOBYTE(wsaData.wVersion)!=2

5、

6、HIBYTE(wsaData.wVersion)!=0){WSACleanup();return0;}sockfd=socket(AF_INET,SOCK_STREAM,0);if(INVALID_SOCKET==sockfd){cout<<"SoketCreateFailed";return0;}/*sockfd=socket(AF_INET,SOCK_STREAM,0);*/if(sockfd==-1){

7、perror("socket创建出错！");exit(1);}my_addr.sin_family=AF_INET;my_addr.sin_port=htons(SERVPORT);my_addr.sin_addr.s_addr=INADDR_ANY;memset(&(my_addr.sin_zero),0,8);if(bind(sockfd,(structsockaddr*)&my_addr,sizeof(structsockaddr))==-1){perror("bind出错！");//exit

8、(1);}intn=0;while(1){if(listen(sockfd,BACKLOG)!=-1){intsin_size=sizeof(structsockaddr_in);SOCKETnSocket=accept(sockfd,(structsockaddr*)&remote_addr,&sin_size);std::vector::iteratoritr_end=client_fd.end();std::vector::iteratoritr=std::fi

9、nd(client_fd.begin(),itr_end,nSocket);if(itr==itr_end){client_fd.push_back(nSocket);printf("receivedaconnectionfrom%s",inet_ntoa(remote_addr.sin_addr));DWORDdwPingThreadID;HANDLEhPingHandle=CreateThread(0,0,qtPingServerThreadFunc,0,0,&dwPingThreadID)

10、;}}}for(intn=0;n