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+/*
+ * Copyright 2006 Serge van den Boom <svdb@stack.nl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef LIBS_NETWORK_CONNECT_LISTEN_H_
+#define LIBS_NETWORK_CONNECT_LISTEN_H_
+
+typedef struct ListenFlags ListenFlags;
+typedef enum {
+ Listen_closed,
+ Listen_resolving,
+ Listen_listening
+} ListenStateState;
+typedef struct ListenError ListenError;
+typedef struct ListenState ListenState;
+
+#include "port.h"
+
+#ifdef USE_WINSOCK
+// I do not want to include winsock2.h, because of possible conflicts with
+// code that includes this file.
+// Note that listen.c itself includes winsock2.h; SOCKLEN_T is used there
+// only where necessary to keep the API consistent.
+# define SOCKLEN_T size_t
+struct sockaddr;
+#else
+# include <netinet/in.h>
+# define SOCKLEN_T socklen_t
+#endif
+
+#include "resolve.h"
+#include "../socket/socket.h"
+
+#include "../netmanager/netmanager.h"
+
+// For listenPort()
+struct ListenFlags {
+ ProtocolFamily familyDemand;
+ // Only accept a protocol family of this type.
+ // One of PF_inet, PF_inet6, or PF_unspec.
+ ProtocolFamily familyPrefer;
+ // Prefer a protocol family of this type.
+ // One of PF_inet, PF_inet6, or PF_unspec.
+ int backlog;
+ // As the 2rd parameter to listen();
+};
+
+struct ListenError {
+ ListenStateState state;
+ // State where the error occured.
+ int err;
+ // errno value. Not relevant if state == resolving unless
+ // gaiRes == EAI_SYSTEM.
+ const ResolveError *resolveError;
+ // Only relevant if state == resolving.
+};
+
+typedef void (*ListenConnectCallback)(ListenState *listenState,
+ NetDescriptor *listenNd, NetDescriptor *newNd,
+ const struct sockaddr *addr, SOCKLEN_T addrLen);
+typedef void (*ListenErrorCallback)(ListenState *listenState,
+ const ListenError *error);
+
+#ifdef LISTEN_INTERNAL
+struct ListenState {
+ RefCount refCount;
+
+ ListenStateState state;
+ ListenFlags flags;
+
+ ListenConnectCallback connectCallback;
+ ListenErrorCallback errorCallback;
+ void *extra;
+
+ ResolveState *resolveState;
+ NetDescriptor **nds;
+ size_t numNd;
+ // INV: (numNd == NULL) == (nds == NULL)
+};
+#endif /* defined(LISTEN_INTERNAL) */
+
+ListenState *listenPort(const char *service, Protocol proto,
+ const ListenFlags *flags, ListenConnectCallback connectCallback,
+ ListenErrorCallback errorCallback, void *extra);
+void ListenState_close(ListenState *listenState);
+void ListenState_incRef(ListenState *listenState);
+bool ListenState_decRef(ListenState *listenState);
+void ListenState_setExtra(ListenState *listenState, void *extra);
+void *ListenState_getExtra(ListenState *listenState);
+
+#endif /* LIBS_NETWORK_CONNECT_LISTEN_H_ */
+