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Linux下用GTK和socket实现简单的聊天室

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;用GTK和socket实现简单的聊天室，出现“段错误” 。是哪里的问题？？ 麻烦看看我的程序，我要用GTK图形界面做一个简单的聊天室，在两台机器上实现通信 。现在程序可以编译过去，但是运行时，当客户段弹出登录界面时，输入用户名再点击确定的时候，就在终端显示“段错误” 。我是新手，刚刚入门，向前辈们请教，盼回复 。服务器端： #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define OUTPORT 3333#define MAX_USERS 8struct _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: %sn",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);elseg_print("thread not supportn");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 errorn!");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 errorn");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);} 服务器端： #include #include #include #include #include #include #include #include #include #define OUTPORT 3333gint sd;struct sockaddr_in s_in;struct hostent *host;gchar username[64];gchar buf[1024];//readgchar get_buf[1048];//writegboolean isconnected=FALSE;static GtkWidget *text;static GtkTextBuffer *buffer;static GtkWidget *message_entry;static GtkWidget *name_entry;static GtkWidget *login_button;void get_message(void){GtkTextIter iter;gchar get_buf[1024];gchar buf[1024];while(read(sd,buf,1024)!=-1){sprintf(get_buf,"%s",buf);gdk_threads_enter();gtk_text_buffer_get_end_iter(buffer,&iter);gtk_text_buffer_insert(buffer,&iter,get_buf,-1);gdk_threads_leave();}}void on_destroy(GtkWidget *widget,GdkEvent *event,gpointer data){sprintf(username,"guest");if(do_connect()==TRUE){gtk_widget_set_sensitive(login_button,FALSE);g_thread_create((GThreadFunc)get_message,NULL,FALSE,NULL);}gtk_widget_destroy(widget);}void on_button_clicked(GtkButton *button,gpointer data){const gchar *name;name=gtk_entry_get_text(GTK_ENTRY(name_entry));sprintf(username,"%s",name);if(do_connect()){gtk_widget_set_sensitive(login_button,FALSE);g_thread_create((GThreadFunc)get_message,NULL,FALSE,NULL);}gtk_widget_destroy(data);}void creat_win(void){GtkWidget *win,*vbox;GtkWidget *button;win=gtk_window_new(GTK_WINDOW_TOPLEVEL);gtk_window_set_title(GTK_WINDOW(win),"输入用户名");gtk_container_set_border_width(GTK_CONTAINER(win),10);g_signal_connect(G_OBJECT(win),"delete_event",G_CALLBACK(on_destroy),NULL);gtk_window_set_modal(GTK_WINDOW(win),TRUE);gtk_window_set_position(GTK_WINDOW(win),GTK_WIN_POS_CENTER);vbox= gtk_vbox_new(FALSE,0);gtk_container_add(GTK_CONTAINER(win),vbox);name_entry=gtk_entry_new();gtk_box_pack_start(GTK_BOX(vbox),name_entry,TRUE,TRUE,5);button=gtk_button_new_from_stock(GTK_STOCK_OK);g_signal_connect(G_OBJECT(button),"clicked",G_CALLBACK(on_button_clicked),win);gtk_box_pack_start(GTK_BOX(vbox),button,FALSE,FALSE,5);gtk_widget_show_all(win);}gboolean do_connect(void){GtkTextIter iter;gint slen;sd=socket(AF_INET,SOCK_STREAM,0);if(sd

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