--- /dev/null
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
+#define GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/gprpp/abstract.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Forward decl of grpc_tcp_server */
+typedef struct grpc_tcp_server grpc_tcp_server;
+
+typedef struct grpc_tcp_server_acceptor {
+ /* grpc_tcp_server_cb functions share a ref on from_server that is valid
+ until the function returns. */
+ grpc_tcp_server* from_server;
+ /* Indices that may be passed to grpc_tcp_server_port_fd(). */
+ unsigned port_index;
+ unsigned fd_index;
+ /* Data when the connection is passed to tcp_server from external. */
+ bool external_connection;
+ int listener_fd;
+ grpc_byte_buffer* pending_data;
+} grpc_tcp_server_acceptor;
+
+/* Called for newly connected TCP connections.
+ Takes ownership of acceptor. */
+typedef void (*grpc_tcp_server_cb)(void* arg, grpc_endpoint* ep,
+ grpc_pollset* accepting_pollset,
+ grpc_tcp_server_acceptor* acceptor);
+namespace grpc_core {
+// An interface for a handler to take a externally connected fd as a internal
+// connection.
+class TcpServerFdHandler {
+ public:
+ virtual ~TcpServerFdHandler() = default;
+ virtual void Handle(int listener_fd, int fd,
+ grpc_byte_buffer* pending_read) GRPC_ABSTRACT;
+
+ GRPC_ABSTRACT_BASE_CLASS;
+};
+} // namespace grpc_core
+
+typedef struct grpc_tcp_server_vtable {
+ grpc_error* (*create)(grpc_closure* shutdown_complete,
+ const grpc_channel_args* args,
+ grpc_tcp_server** server);
+ void (*start)(grpc_tcp_server* server, grpc_pollset** pollsets,
+ size_t pollset_count, grpc_tcp_server_cb on_accept_cb,
+ void* cb_arg);
+ grpc_error* (*add_port)(grpc_tcp_server* s, const grpc_resolved_address* addr,
+ int* out_port);
+ grpc_core::TcpServerFdHandler* (*create_fd_handler)(grpc_tcp_server* s);
+ unsigned (*port_fd_count)(grpc_tcp_server* s, unsigned port_index);
+ int (*port_fd)(grpc_tcp_server* s, unsigned port_index, unsigned fd_index);
+ grpc_tcp_server* (*ref)(grpc_tcp_server* s);
+ void (*shutdown_starting_add)(grpc_tcp_server* s,
+ grpc_closure* shutdown_starting);
+ void (*unref)(grpc_tcp_server* s);
+ void (*shutdown_listeners)(grpc_tcp_server* s);
+} grpc_tcp_server_vtable;
+
+/* Create a server, initially not bound to any ports. The caller owns one ref.
+ If shutdown_complete is not NULL, it will be used by
+ grpc_tcp_server_unref() when the ref count reaches zero. */
+grpc_error* grpc_tcp_server_create(grpc_closure* shutdown_complete,
+ const grpc_channel_args* args,
+ grpc_tcp_server** server);
+
+/* Start listening to bound ports */
+void grpc_tcp_server_start(grpc_tcp_server* server, grpc_pollset** pollsets,
+ size_t pollset_count,
+ grpc_tcp_server_cb on_accept_cb, void* cb_arg);
+
+/* Add a port to the server, returning the newly allocated port on success, or
+ -1 on failure.
+
+ The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
+ both IPv4 and IPv6 connections, but :: is the preferred style. This usually
+ creates one socket, but possibly two on systems which support IPv6,
+ but not dualstack sockets. */
+/* TODO(ctiller): deprecate this, and make grpc_tcp_server_add_ports to handle
+ all of the multiple socket port matching logic in one place */
+grpc_error* grpc_tcp_server_add_port(grpc_tcp_server* s,
+ const grpc_resolved_address* addr,
+ int* out_port);
+
+/* Create and return a TcpServerFdHandler so that it can be used by upper layer
+ to hand over an externally connected fd to the grpc server. */
+grpc_core::TcpServerFdHandler* grpc_tcp_server_create_fd_handler(
+ grpc_tcp_server* s);
+
+/* Number of fds at the given port_index, or 0 if port_index is out of
+ bounds. */
+unsigned grpc_tcp_server_port_fd_count(grpc_tcp_server* s, unsigned port_index);
+
+/* Returns the file descriptor of the Mth (fd_index) listening socket of the Nth
+ (port_index) call to add_port() on this server, or -1 if the indices are out
+ of bounds. The file descriptor remains owned by the server, and will be
+ cleaned up when the ref count reaches zero. */
+int grpc_tcp_server_port_fd(grpc_tcp_server* s, unsigned port_index,
+ unsigned fd_index);
+
+/* Ref s and return s. */
+grpc_tcp_server* grpc_tcp_server_ref(grpc_tcp_server* s);
+
+/* shutdown_starting is called when ref count has reached zero and the server is
+ about to be destroyed. The server will be deleted after it returns. Calling
+ grpc_tcp_server_ref() from it has no effect. */
+void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server* s,
+ grpc_closure* shutdown_starting);
+
+/* If the refcount drops to zero, enqueue calls on exec_ctx to
+ shutdown_listeners and delete s. */
+void grpc_tcp_server_unref(grpc_tcp_server* s);
+
+/* Shutdown the fds of listeners. */
+void grpc_tcp_server_shutdown_listeners(grpc_tcp_server* s);
+
+void grpc_tcp_server_global_init();
+
+void grpc_set_tcp_server_impl(grpc_tcp_server_vtable* impl);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_SERVER_H */
git://repos.xcallymotion.com / motion2.git / blobdiff