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1、闲来无聊，写了一个体积很小的tcp循环式服务器，方便各系统移植。特共享如下，编译后体积约为8kB，经过7*24小时压力测试，5个以内连接都OK。结合我之前的tcp转发程序，可以做成一个网卡端口信息扫描日志服务。#include#include#include#include#defineSERV_PORT49999#defineMAX_BUF_ONE65535#defineMIN_IP_SIZE16#defineMESSAGE_FILE"m.txt"intMakeCurTimeStr(char*szCurT
2、imeStr){structtm*newtime;charam_pm[]="AM";__time64_tlong_time;_time64(&long_time);//Gettimeas64-bitinteger.//Converttolocaltime.newtime=_localtime64(&long_time);//C4996//Note:_localtime64deprecated;consider_localetime64_sif(newtime->tm_hour>12)//Setupextension.strcpy_s(am_pm,sizeof(am_pm),"PM")
3、;if(newtime->tm_hour>12)//Convertfrom24-hournewtime->tm_hour-=12;//to12-hourclock.if(newtime->tm_hour==0)//Sethourto12ifmidnight.newtime->tm_hour=12;charbuff[30];memset(buff,0,30);asctime_s(buff,sizeof(buff),newtime);sprintf(szCurTimeStr,"%.19s%s",buff,am_pm);return0;}intmain(intargc,char*argv[
4、]){SOCKETso_serv,so_client;structsockaddr_inserv_addr,client_addr;intlen_client;intret;char*szBuf;charszTimeStr[40];FILE*pf;//FILE*pSpeedFile;char*szIp;intiRet,i;unsignedshortnServPort;WSADATAwsaData;iRet=WSAStartup(MAKEWORD(2,2),&wsaData);if(iRet!=NO_ERROR){printf("WSAStartupfailedwitherror:%d
5、",iRet);return1;}so_serv=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);memset(&serv_addr,0,sizeof(structsockaddr_in));serv_addr.sin_family=AF_INET;serv_addr.sin_addr.s_addr=htonl(INADDR_ANY);nServPort=(argc>1)?atoi(argv[1]):SERV_PORT;//是否自行指定端口，若不指定用默认的49999serv_addr.sin_port=htons(nServPort);iRet=
6、bind(so_serv,(sockaddr*)&serv_addr,sizeof(structsockaddr_in));if(SOCKET_ERROR==iRet){closesocket(so_serv);WSACleanup();return-1;}iRet=listen(so_serv,SOMAXCONN);if(SOCKET_ERROR==iRet){closesocket(so_serv);WSACleanup();return-1;}printf("Receiveserverstart!Port:%d",nServPort);for(;;){len_client=
7、sizeof(structsockaddr_in);memset(&client_addr,0,len_client);so_client=accept(so_serv,(sockaddr*)&client_addr,&len_client);szBuf=(char*)malloc(MAX_BUF_ONE);memset(szBuf,0,MAX_BUF_ONE);ret=recv(so_client,(char*)szBuf,(MAX_BUF_ONE-1)
