Linux UDP簡單聊天室

伺服器端：

#include#include #include #include #include #include #include #include int sockfd = 0;

//建立結構體用來存放客戶端資訊
typedef struct node
node_t;
node_t *link_head()
node_t *h;
//正插法
void link_creat(node_t *head , int client_port,char *name,struct sockaddr_in clientaddr)
//列印
void link_show(node_t *head)
}//刪除
int link_delete(node_t *head,int client_port)
while(head->next != null)
head = head->next; 
} return 0;
}//判斷是否為空
int link_empty(node_t *head)
else }
//查詢
char *link_search(node_t *head,int client_port)
} return null;
}//傳送給處除了自己的其他使用者
int cliene_send(node_t *head,struct sockaddr_in clientaddr,char *buf)
} }}//接收執行緒
void *fun_recv(void *a)
; char client_name[128];
socklen_t len = sizeof(clientaddr);
int r = 0;
int client_port;
char *isclient_port = null;
// node_t *h = link_head();
while(1)
else
else
;memset(ss,0,sizeof(ss));
strcat(ss,isclient_port);
strcat(ss,"退出了 ");
cliene_send(h,clientaddr,ss);
link_delete(h,client_port);
link_show(h);
}else
;memset(ss,0,sizeof(ss));
strcat(ss,isclient_port);
strcat(ss,": ");
strcat(ss,buf);
cliene_send(h,clientaddr,ss);
//link_show(h);
printf("%s :%s\n",isclient_port,buf);
// printf("port = %d\n",ntohs(clientaddr.sin_port));}}
} //printf("port = %d\n",ntohs(clientaddr.sin_port));
//printf("addr = %s\n",inet_ntoa(clientaddr.sin_addr)); }}
//傳送執行緒
void *fun_send(void *a)
; while(1)
} }}
int main(int argc, const char *ar**)
//建立套接字
sockfd = socket(af_inet,sock_dgram,0);
if(sockfd == -1)
//設定網路資訊
serveraddr.sin_family = af_inet;
serveraddr.sin_port = htons(atoi(ar**[1]));
serveraddr.sin_addr.s_addr = inet_addr("192.168.11.218");
//繫結
if(bind(sockfd,(struct sockaddr *)&serveraddr,sizeof(serveraddr))==-1)
pthread_t pthid1,pthid2;
//通訊
if(pthread_create(&pthid1,null,fun_recv,&clientaddr)!=0) 
if(pthread_create(&pthid2,null,fun_send,h)!=0)
pthread_join(pthid1,null);
pthread_join(pthid2,null);
close(sockfd);
return 0;
}

#include#include #include #include #include #include #include int sockfd = 0;

struct sockaddr_in serveraddr;
socklen_t len = sizeof(serveraddr);
pthread_t pthid1,pthid2;
//傳送執行緒
void *fun_send(void *a)
; printf("請輸入使用者名稱\n");
while(1)
if(strcmp(buf,"quit")== 0)
}}//接收執行緒
void *fun_recv(void *a)
; while(1)
else
printf("%s\n",buf);
} }}int main(int argc, const char *ar**)
//建立套接字
sockfd = socket(af_inet,sock_dgram,0);
if(sockfd == -1)
//設定網路資訊
serveraddr.sin_family = af_inet;
serveraddr.sin_port = htons(atoi(ar**[1]));
serveraddr.sin_addr.s_addr = inet_addr("192.168.11.218");
//通訊
if(pthread_create(&pthid1,null,fun_send,null)!=0)
if(pthread_create(&pthid2,null,fun_recv,null)!=0)
pthread_join(pthid1,null);
pthread_join(pthid2,null);
close(sockfd);
return 0;
}

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