基于linux下控制台，多线程并发控制的聊天程序（服务器端）

  废话不多说了

  把源代码贴上来吧

  留作以后学习的参考和回顾

  涉及多线程，DGRAM socket编程

 

 

#include <pthread.h> #include <stdlib.h> #include <stdio.h> #include <errno.h> #include <string.h> #include <unistd.h> #include <netdb.h> #include <sys/socket.h> #include <netinet/in.h> #include <sys/types.h> #include <arpa/inet.h> #define PORT 4000 #define MAXBUFLEN 100 char recvbuf[MAXBUFLEN]; char sendbuf[MAXBUFLEN]; char dialog[MAXBUFLEN*8]; struct sockaddr_in their_addr; struct sockaddr_in my_addr; int sockfd; void fatal(char *mes) { perror(mes); exit(1); } void getmessage(void) { while(1) { int sock_len=sizeof(struct sockaddr); int numget; if((numget=recvfrom(sockfd,recvbuf,MAXBUFLEN,0, (struct sockaddr *)&their_addr,&sock_len))==-1) fatal("recvfrom"); recvbuf[numget]='/n'; recvbuf[numget+1]='/0'; //take care of next expression,maybe error will be brought strcat(dialog,recvbuf); system("clear"); printf("%s",dialog); } } int main() { pthread_t tid; int rtn; dialog[0]='/0'; if((sockfd=socket(AF_INET,SOCK_DGRAM,0))==-1) fatal("socket"); my_addr.sin_family=AF_INET; my_addr.sin_port=htons(PORT); my_addr.sin_addr.s_addr=INADDR_ANY; bzero(&(my_addr.sin_zero),8); if(bind(sockfd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))==-1) fatal("bind"); rtn=pthread_create(&tid,NULL,(void *)getmessage,NULL); if(rtn!=0) fatal("pthread_create"); while(1) { //scanf("%s",sendbuf); gets(sendbuf); sendbuf[strlen(sendbuf)]='/n'; sendbuf[strlen(sendbuf)+1]='/0'; strcat(dialog,sendbuf); system("clear"); printf("%s",dialog); if(sendto(sockfd,sendbuf,sizeof(sendbuf),0, (struct sockaddr *)&their_addr,sizeof(struct sockaddr))==-1) fatal("sendto"); } close(sockfd); exit(0); }

 

 

编译： gcc -lpthread -o talk talk.c

 

运行可执行文件：./talk

然后就可以自由的聊天了

可以连续发送，连续接受

带清屏幕效果