写一个Linux系统的聊天室程序
时间: 2024-04-06 08:24:01 浏览: 17
作为AI语言模型,我无法真正地在Linux上编写和运行程序,但是我可以提供一个基本的聊天室程序的代码框架。
1. 服务器端代码
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <pthread.h>
#define BUF_SIZE 100
#define MAX_CLNT 256
void error_handling(char *message);
void *handle_clnt(void *arg);
void send_msg(char *msg, int len);
int clnt_cnt = 0;
int clnt_socks[MAX_CLNT];
pthread_mutex_t mutx;
int main(int argc, char *argv[])
{
int serv_sock, clnt_sock;
struct sockaddr_in serv_adr, clnt_adr;
pthread_t t_id;
if (argc != 2)
{
printf("Usage: %s <port>\n", argv[0]);
exit(1);
}
pthread_mutex_init(&mutx, NULL);
serv_sock = socket(PF_INET, SOCK_STREAM, 0);
memset(&serv_adr, 0, sizeof(serv_adr));
serv_adr.sin_family = AF_INET;
serv_adr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_adr.sin_port = htons(atoi(argv[1]));
if (bind(serv_sock, (struct sockaddr *)&serv_adr, sizeof(serv_adr)) == -1)
error_handling("bind() error");
if (listen(serv_sock, 5) == -1)
error_handling("listen() error");
while (1)
{
socklen_t clnt_adr_sz = sizeof(clnt_adr);
clnt_sock = accept(serv_sock, (struct sockaddr *)&clnt_adr, &clnt_adr_sz);
pthread_mutex_lock(&mutx);
clnt_socks[clnt_cnt++] = clnt_sock;
pthread_mutex_unlock(&mutx);
pthread_create(&t_id, NULL, handle_clnt, (void *)&clnt_sock);
pthread_detach(t_id);
printf("Connected client IP: %s \n", inet_ntoa(clnt_adr.sin_addr));
}
close(serv_sock);
return 0;
}
void *handle_clnt(void *arg)
{
int clnt_sock = *((int *)arg);
int str_len = 0, i;
char msg[BUF_SIZE];
while ((str_len = read(clnt_sock, msg, sizeof(msg))) != 0)
send_msg(msg, str_len);
pthread_mutex_lock(&mutx);
for (i = 0; i < clnt_cnt; i++)
{
if (clnt_sock == clnt_socks[i])
{
while (i++ < clnt_cnt - 1)
clnt_socks[i] = clnt_socks[i + 1];
break;
}
}
clnt_cnt--;
pthread_mutex_unlock(&mutx);
close(clnt_sock);
return NULL;
}
void send_msg(char *msg, int len)
{
int i;
pthread_mutex_lock(&mutx);
for (i = 0; i < clnt_cnt; i++)
write(clnt_socks[i], msg, len);
pthread_mutex_unlock(&mutx);
}
void error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}
```
2. 客户端代码
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <pthread.h>
#define BUF_SIZE 100
void *send_msg(void *arg);
void *recv_msg(void *arg);
void error_handling(char *message);
char name[BUF_SIZE];
char msg[BUF_SIZE];
int main(int argc, char *argv[])
{
int sock;
struct sockaddr_in serv_adr;
pthread_t snd_thread, rcv_thread;
void *thread_return;
if (argc != 4)
{
printf("Usage: %s <IP> <port> <name>\n", argv[0]);
exit(1);
}
sprintf(name, "[%s]", argv[3]);
sock = socket(PF_INET, SOCK_STREAM, 0);
memset(&serv_adr, 0, sizeof(serv_adr));
serv_adr.sin_family = AF_INET;
serv_adr.sin_addr.s_addr = inet_addr(argv[1]);
serv_adr.sin_port = htons(atoi(argv[2]));
if (connect(sock, (struct sockaddr *)&serv_adr, sizeof(serv_adr)) == -1)
error_handling("connect() error");
pthread_create(&snd_thread, NULL, send_msg, (void *)&sock);
pthread_create(&rcv_thread, NULL, recv_msg, (void *)&sock);
pthread_join(snd_thread, &thread_return);
pthread_join(rcv_thread, &thread_return);
close(sock);
return 0;
}
void *send_msg(void *arg)
{
int sock = *((int *)arg);
char name_msg[BUF_SIZE + BUF_SIZE];
while (1)
{
fgets(msg, BUF_SIZE, stdin);
if (!strcmp(msg, "q\n") || !strcmp(msg, "Q\n"))
{
close(sock);
exit(0);
}
sprintf(name_msg, "%s %s", name, msg);
write(sock, name_msg, strlen(name_msg));
}
return NULL;
}
void *recv_msg(void *arg)
{
int sock = *((int *)arg);
char name_msg[BUF_SIZE + BUF_SIZE];
int str_len;
while (1)
{
str_len = read(sock, name_msg, BUF_SIZE + BUF_SIZE - 1);
if (str_len == -1)
return (void *)-1;
name_msg[str_len] = 0;
fputs(name_msg, stdout);
}
return NULL;
}
void error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}
```
这个代码框架非常简单,但足以说明如何使用Linux套接字编写一个基本的聊天室程序。您可以根据自己的需要进行修改和扩展。