Linux下多人聊天空间代码(共7页).doc

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1、精选优质文档-倾情为你奉上 Linux下多人聊天空间代码在相同目录下新建文件wwb.h、wwb.c、room.c，把下面相应的代码拷进这两个文件里；再建一个recv.txt,该文件用于保存和显示聊天记录。在Linux中，使用下面命令编译：gcc -o room room.c wwb.c 使用命令运行：./room 使用命令查看聊天记录：tail -f recv.txt/wwb.h头文件 int WriteLog(const char *format, .); /写日志文件char* GetSysTime(char* time); /得到系统时间/wwb.c 代码#include #includ

2、e #include #include #include #include #include #include int WriteLog(const char *format, .) FILE *fp; fp=fopen(recv.txt, a+); if(fp=NULL) return -1; va_list arg_ptr; va_start(arg_ptr, format); vfprintf(fp, format, arg_ptr); va_end(arg_ptr); fclose(fp); return 0;char* GetSysTime(char *out) time_t tim

3、ep; struct tm *p; time(&timep); p=localtime(&timep); int year=(1900+p-tm_year); int month=(1+p-tm_mon); int day=p-tm_mday; int hour=p-tm_hour; int minute=p-tm_min; int second=p-tm_sec; sprintf(out,%d-,year); if(month10) sprintf(out+5,0%d-,month); else sprintf(out+5,%d-,month); if(day10) sprintf(out+

4、8,0%d ,day); else sprintf(out+8,%d ,day); if(hour10) sprintf(out+11,0%d:,hour); else sprintf(out+11,%d:,hour); if(minute10) sprintf(out+14,0%d:,minute); else sprintf(out+14,%d:,minute); if(second10) sprintf(out+17,0%d,second); else sprintf(out+17,%d,second); return out;/*int main() char time50; int

5、i=10; char *s=hello; WriteLog(%s,%d,%sn, GetSysTime(time),i,s);*/room.c 主程序代码#include #include #include #include #include #include #include #include #include wwb.h#define BUFSIZE 255int main(int argc, char *argv) if (argc !=2) printf(Parameter(s): n); exit(1); char *username=argv1; /* char username1

6、6=0; do printf(请输入你的用户名:); fgets(username,16,stdin); while(!(strcmp(username,n);*/ in_port_t servPort = 5000; char *bcIP = 192.168.12.255; in_port_t bcPort = 5000; pid_t pid; pid = fork(); if(pid 0) /Parent Process int sock1 = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (sock1 0) printf(socket() fa

7、iledn); exit(1); int on = 1; setsockopt(sock1, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on); struct sockaddr_in bcAddr; memset(&bcAddr, 0, sizeof(bcAddr); bcAddr.sin_family = AF_INET; int rtnVal = inet_pton(AF_INET, bcIP, &bcAddr.sin_addr.s_addr); if (rtnVal = 0) printf(inet_pton() failed, invalid addr

8、ess stringn); exit(1); else if (rtnVal 0) printf(inet_pton() failedn); exit(1); bcAddr.sin_port = htons(bcPort); ssize_t numBytes1=sendto(sock1,username, strlen(username), 0, (struct sockaddr*)&bcAddr, sizeof(bcAddr); if (numBytes1 0) printf(sendto() failedn); exit(1); ssize_t numBytes2=sendto(sock1

9、, Hello!, strlen(Hello!), 0, (struct sockaddr*)&bcAddr, sizeof(bcAddr); if (numBytes2 0) printf(sendto() failedn); exit(1); while(1) char strMsg256 = 0; printf(you say:); /scanf(%s,strMsg); fgets(strMsg, 256, stdin); if(strcmp(strMsg,quitn)=0) memset(strMsg, strlen(strMsg),0); ssize_t numBytes3= sen

10、dto(sock1,username, strlen(username), 0, (struct sockaddr*)&bcAddr, sizeof(bcAddr); if (numBytes3 0) printf(sendto() failedn); exit(1); ssize_t numBytes4=sendto(sock1,Bye!n, strlen(Bye!), 0, (struct sockaddr*)&bcAddr, sizeof(bcAddr); if (numBytes4 0) printf(sendto() failedn); exit(1); exit(0); if(st

11、rcmp(strMsg,n)=0); else ssize_t numBytes5 =sendto(sock1,username, strlen(username), 0, (struct sockaddr*)&bcAddr, sizeof(bcAddr); if (numBytes5 0) printf(sendto() failedn); exit(1); ssize_t numBytes6 = sendto(sock1,strMsg , strlen(strMsg)-1, 0, (struct sockaddr*)&bcAddr, sizeof(bcAddr); if (numBytes

12、6 0) printf(sendto() failedn); exit(1); else if(pid = 0) /child process int sock2 = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (sock2 0) printf(socket() failedn); exit(1); struct sockaddr_in servAddr; memset(&servAddr, 0, sizeof(servAddr); servAddr.sin_family = AF_INET; servAddr.sin_addr.s_addr =

13、htonl(INADDR_ANY); servAddr.sin_port = htons(servPort); if (bind(sock2, (struct sockaddr*) &servAddr, sizeof(servAddr) 0) printf(bind() failedn); exit(1); while(1) struct sockaddr_in fromAddr; socklen_t fromAddrLen = sizeof(fromAddr); char buffer1BUFSIZE = 0; ssize_t numBytes7= recvfrom(sock2, buffe

14、r1, BUFSIZE, 0, (struct sockaddr *) &fromAddr, &fromAddrLen); if (numBytes7 0) printf(recvfrom() failedn); exit(1); char *fromuser=buffer1; char buffer2BUFSIZE = 0; ssize_t numBytes8 = recvfrom(sock2, buffer2, BUFSIZE, 0, (struct sockaddr *) &fromAddr, &fromAddrLen); if (numBytes8 0) printf(recvfrom

15、() failedn); exit(1); if(strcmp(buffer2,Hello!)=0) char ctime50 = 0; WriteLog(%s Received:%s 已进入聊天室!n, GetSysTime(ctime),fromuser); else if(strcmp(buffer2,Bye!)=0) char ctime50 = 0; WriteLog(%s Received:%s 已离开聊天室!n, GetSysTime(ctime),fromuser); else char ctime50 = 0; WriteLog(%s %s say: %sn, GetSysTime(ctime),fromuser,buffer2); 专心-专注-专业