#include #include #include GMainLoop *loop; int port = 7777; gboolean verbose = FALSE; gboolean dont_reuse_address = FALSE; gboolean non_blocking = FALSE; gboolean use_udp = FALSE; gboolean use_source = FALSE; int cancel_timeout = 0; static GOptionEntry cmd_entries[] = { {"port", 'p', 0, G_OPTION_ARG_INT, &port, "Local port to bind to", NULL}, {"cancel", 'c', 0, G_OPTION_ARG_INT, &cancel_timeout, "Cancel any op after the specified amount of seconds", NULL}, {"udp", 'u', 0, G_OPTION_ARG_NONE, &use_udp, "Use udp instead of tcp", NULL}, {"verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, "Be verbose", NULL}, {"no-reuse", 0, 0, G_OPTION_ARG_NONE, &dont_reuse_address, "Don't SOADDRREUSE", NULL}, {"non-blocking", 'n', 0, G_OPTION_ARG_NONE, &non_blocking, "Enable non-blocking i/o", NULL}, {"use-source", 's', 0, G_OPTION_ARG_NONE, &use_source, "Use GSource to wait for non-blocking i/o", NULL}, {NULL} }; static char * socket_address_to_string (GSocketAddress *address) { GInetAddress *inet_address; char *str, *res; int the_port; inet_address = g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (address)); str = g_inet_address_to_string (inet_address); the_port = g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (address)); res = g_strdup_printf ("%s:%d", str, the_port); g_free (str); return res; } static gboolean source_ready (gpointer data, GIOCondition condition) { g_main_loop_quit (loop); return FALSE; } static void ensure_condition (GSocket *socket, const char *where, GCancellable *cancellable, GIOCondition condition) { GError *error = NULL; GSource *source; if (!non_blocking) return; if (use_source) { source = g_socket_create_source (socket, condition, cancellable); g_source_set_callback (source, (GSourceFunc) source_ready, NULL, NULL); g_source_attach (source, NULL); g_source_unref (source); g_main_loop_run (loop); } else { if (!g_socket_condition_wait (socket, condition, cancellable, &error)) { g_printerr ("condition wait error for %s: %s\n", where, error->message); exit (1); } } } static gpointer cancel_thread (gpointer data) { GCancellable *cancellable = data; g_usleep (1000*1000*cancel_timeout); g_print ("Cancelling\n"); g_cancellable_cancel (cancellable); return NULL; } int main (int argc, char *argv[]) { GSocket *socket, *new_socket, *recv_socket; GSocketAddress *src_address; GSocketAddress *address; GSocketType socket_type; GError *error = NULL; GOptionContext *context; GCancellable *cancellable; g_thread_init (NULL); g_type_init (); context = g_option_context_new (" - Test GSocket server stuff"); g_option_context_add_main_entries (context, cmd_entries, NULL); if (!g_option_context_parse (context, &argc, &argv, &error)) { g_printerr ("%s: %s\n", argv[0], error->message); return 1; } if (cancel_timeout) { cancellable = g_cancellable_new (); g_thread_create (cancel_thread, cancellable, FALSE, NULL); } else { cancellable = NULL; } loop = g_main_loop_new (NULL, FALSE); if (use_udp) socket_type = G_SOCKET_TYPE_DATAGRAM; else socket_type = G_SOCKET_TYPE_STREAM; socket = g_socket_new (G_SOCKET_FAMILY_IPV4, socket_type, 0, &error); if (socket == NULL) { g_printerr ("%s: %s\n", argv[0], error->message); return 1; } if (non_blocking) g_socket_set_blocking (socket, FALSE); src_address = g_inet_socket_address_new (g_inet_address_new_any (G_SOCKET_FAMILY_IPV4), port); if (!g_socket_bind (socket, src_address, !dont_reuse_address, &error)) { g_printerr ("Can't bind socket: %s\n", error->message); return 1; } g_object_unref (src_address); if (!use_udp) { if (!g_socket_listen (socket, &error)) { g_printerr ("Can't listen on socket: %s\n", error->message); return 1; } g_print ("listening on port %d...\n", port); ensure_condition (socket, "accept", cancellable, G_IO_IN); new_socket = g_socket_accept (socket, cancellable, &error); if (!new_socket) { g_printerr ("Error accepting socket: %s\n", error->message); return 1; } if (non_blocking) g_socket_set_blocking (new_socket, FALSE); address = g_socket_get_remote_address (new_socket, &error); if (!address) { g_printerr ("Error getting remote address: %s\n", error->message); return 1; } g_print ("got a new connection from %s\n", socket_address_to_string (address)); g_object_unref (address); recv_socket = new_socket; } else { recv_socket = socket; new_socket = NULL; } while (TRUE) { gchar buffer[4096] = { }; gssize size; gsize to_send; ensure_condition (recv_socket, "receive", cancellable, G_IO_IN); if (use_udp) size = g_socket_receive_from (recv_socket, &address, buffer, sizeof buffer, cancellable, &error); else size = g_socket_receive (recv_socket, buffer, sizeof buffer, cancellable, &error); if (size < 0) { g_printerr ("Error receiving from socket: %s\n", error->message); return 1; } if (size == 0) break; g_print ("received %" G_GSSIZE_FORMAT " bytes of data", size); if (use_udp) g_print (" from %s", socket_address_to_string (address)); g_print ("\n"); if (verbose) g_print ("-------------------------\n" "%.*s\n" "-------------------------\n", (int)size, buffer); to_send = size; while (to_send > 0) { ensure_condition (recv_socket, "send", cancellable, G_IO_OUT); if (use_udp) size = g_socket_send_to (recv_socket, address, buffer, to_send, cancellable, &error); else size = g_socket_send (recv_socket, buffer, to_send, cancellable, &error); if (size < 0) { if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) { g_print ("socket send would block, handling\n"); g_error_free (error); error = NULL; continue; } else { g_printerr ("Error sending to socket: %s\n", error->message); return 1; } } g_print ("sent %" G_GSSIZE_FORMAT " bytes of data\n", size); if (size == 0) { g_printerr ("Unexpected short write\n"); return 1; } to_send -= size; } } g_print ("connection closed\n"); if (new_socket) { if (!g_socket_close (new_socket, &error)) { g_printerr ("Error closing connection socket: %s\n", error->message); return 1; } g_object_unref (G_OBJECT (new_socket)); } if (!g_socket_close (socket, &error)) { g_printerr ("Error closing master socket: %s\n", error->message); return 1; } g_object_unref (G_OBJECT (socket)); return 0; }