我正在尝试学习gio库,尤其是giostream和gthreadedsocketservice。我想写一个简单的服务器:
我尝试的代码是: 客户端:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <gio/gio.h>
int main(int argc, char* argv[]){
GError* error = NULL;
GSocketConnection* connection = NULL;
GOutputStream* ostream = NULL;
GSocketClient* client = g_socket_client_new();
gchar message[1024];
connection = g_socket_client_connect_to_host(client, (gchar*)"localhost", 1500, NULL, &error);
if (error) {
g_error(error->message);
g_error_free(error);
return 1;
}
else g_print("Message: connected.\n");
while(TRUE){
scanf("%s", message);
ostream = g_io_stream_get_output_stream(G_IO_STREAM(connection));
g_output_stream_write(ostream, message, strlen(message), NULL, &error);
if (error) {
g_error(error->message);
g_error_free(error);
return 1;
}
}
g_print("Message: client terminated.\n");
return 0;
}
服务器端:
#include <glib.h>
#include <gio/gio.h>
gboolean run_callback(GThreadedSocketService*, GSocketConnection*, GObject*, gpointer);
int main(int argc, char **argv){
int port = 1500;
GError* error = NULL;
GMainLoop* loop = NULL;
GThreadedSocketService* service = NULL;
service = (GThreadedSocketService*)g_threaded_socket_service_new(-1);
g_socket_listener_add_inet_port((GSocketListener*)service, port, NULL, &error);
if (error != NULL) {g_error(error->message);}
g_signal_connect(service, "run", G_CALLBACK(run_callback), NULL);
g_socket_service_start((GSocketService*)service);
g_print("Message: server launched...\n");
loop = g_main_loop_new(NULL, FALSE);
g_main_loop_run(loop);
return 0;
}
gboolean run_callback(GThreadedSocketService* service, GSocketConnection* connection, GObject* source_object, gpointer user_data){
GInputStream* instream = NULL;
gchar message[1024];
GError* error = NULL;
instream = g_io_stream_get_input_stream(G_IO_STREAM(connection));
g_input_stream_read_all(instream, message, 1024, NULL, NULL, &error);
if (error != NULL) {
g_error(error->message);
g_error_free(error);
return FALSE;
}
g_print("Received: %s\n", message);
g_print("Message: connection terminated.\n");
if (error) g_error_free(error);
return FALSE;
}
问题是当我测试它时,在客户端我键入了三行:
aaa
bbb
ccc
但是服务器端没有显示任何内容。只有当我退出客户端时,它才会在服务器屏幕上显示:
aaabbbccc
但我想要的是当我输入&#34; aaa&#34;并输入,它立即显示在服务器屏幕上。
知道哪里出错了?
答案 0 :(得分:1)
问题是你使用g_input_stream_read_all
。请注意名称中的后缀all
?这意味着它将尝试读取您传递给它的大小,仅在收到所有那些字节或者出现错误或断开连接时返回。
而是使用例如循环中g_input_stream_read
。