Linux下用GTK和socket实现简单的聊天室 （1）

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 


#include 

#include 

#include 

#include 

#include 

#define OUTPORT 3333
#define MAX_USERS 8

struct _client{
gint sd;
gboolean in_use;
gchar name[64];
gchar buf[1024];
};
typedef struct _client client;

client user[MAX_USERS];

void do_service(gpointer id)
{
gint j;
char tobuf[1024];

while(read(user[GPOINTER_TO_INT(id)].sd,
user[GPOINTER_TO_INT(id)].buf,1024)!=-1)
{
sprintf(tobuf,"%s: %s\n",user[GPOINTER_TO_INT(id)].name,
user[GPOINTER_TO_INT(id)].buf);
for(j=0;j {
if(user[j].in_use)
{
write(user[j].sd,tobuf,1024);
g_printf("%s",tobuf);
}
}
}
user[GPOINTER_TO_INT(id)].in_use=FALSE;
close(user[GPOINTER_TO_INT(id)].sd);
//exit(0);
}

int main(int agrv,char *argv[])
{
gint sd,newsd;
struct sockaddr_in *my_addr; /* 本机地址信息 */

struct sockaddr_in *remote_addr; /* 客户端地址信息 */
gint slen;
gint count=0;
gint flags;
gchar buf[1024];
gchar tobuf[1024];
gint length,i,j;

if(!g_thread_supported())
g_thread_init(NULL);
else
g_print("thread not support\n");

sd=socket(AF_INET,SOCK_STREAM,0);
if(sd==-1)
{
g_print("Creat socket error!\n");
return -1;
}

my_addr=g_new(struct sockaddr_in,1);
my_addr->sin_family=AF_INET;
my_addr->sin_port=htons(OUTPORT);
my_addr->sin_addr.s_addr = INADDR_ANY;
bzero( &(my_addr->sin_zero),8);

slen=sizeof(struct sockaddr_in);

if(bind(sd,(struct sockaddr *) my_addr,slen)<0)
{
g_print("bind error\n!");
return -1;
}

if(listen(sd,8)<0)
{
g_print("listen error!\n");
}

for(i=0;i user.in_use=FALSE;

flags=fcntl(sd,F_GETFL);
fcntl(sd,F_GETFL,flags&~O_NDELAY);

for(;;)
{
newsd=accept(sd,(struct sockaddr *) remote_addr, &slen);
if(newsd==-1)
{
g_print("accept error\n");
break;
}
else
{
if(count>=MAX_USERS)
{
sprintf(buf,"用户数量过多，服务器不能连接!\n");
write(newsd,buf,1024);
close(newsd);
}
else
{
flags=fcntl(user.sd,F_GETFL);
fcntl(user.sd,F_SETFL,O_NONBLOCK);
user[count].sd=newsd;
user[count].in_use=TRUE;
read(newsd,user[count].name,64);

g_thread_create((GThreadFunc)do_service,
(gpointer)count,TRUE,NULL);
count++;
}
}
}//for(;;)

close(sd);
g_free(my_addr);
}