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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+
+
+#ifndef CEPH_MESSENGER_H
+#define CEPH_MESSENGER_H
+
+#include <map>
+#include <deque>
+
+#include <errno.h>
+#include <sstream>
+#include <memory>
+
+#include "Message.h"
+#include "Dispatcher.h"
+#include "Policy.h"
+#include "common/Throttle.h"
+#include "include/Context.h"
+#include "include/types.h"
+#include "include/ceph_features.h"
+#include "auth/Crypto.h"
+#include "common/item_history.h"
+#include "auth/AuthRegistry.h"
+#include "include/ceph_assert.h"
+
+#include <errno.h>
+#include <sstream>
+#include <signal.h>
+
+#define SOCKET_PRIORITY_MIN_DELAY 6
+
+class Timer;
+
+class AuthClient;
+class AuthServer;
+
+#ifdef UNIT_TESTS_BUILT
+
+struct Interceptor {
+ std::mutex lock;
+ std::condition_variable cond_var;
+
+ enum ACTION : uint32_t {
+ CONTINUE = 0,
+ FAIL,
+ STOP
+ };
+
+ enum STEP {
+ START_CLIENT_BANNER_EXCHANGE = 1,
+ START_SERVER_BANNER_EXCHANGE,
+ BANNER_EXCHANGE_BANNER_CONNECTING,
+ BANNER_EXCHANGE,
+ HANDLE_PEER_BANNER_BANNER_CONNECTING,
+ HANDLE_PEER_BANNER,
+ HANDLE_PEER_BANNER_PAYLOAD_HELLO_CONNECTING,
+ HANDLE_PEER_BANNER_PAYLOAD,
+ SEND_AUTH_REQUEST,
+ HANDLE_AUTH_REQUEST_ACCEPTING_SIGN,
+ SEND_CLIENT_IDENTITY,
+ SEND_SERVER_IDENTITY,
+ SEND_RECONNECT,
+ SEND_RECONNECT_OK,
+ READY,
+ HANDLE_MESSAGE,
+ READ_MESSAGE_COMPLETE,
+ SESSION_RETRY
+ };
+
+ virtual ~Interceptor() {}
+ virtual ACTION intercept(Connection *conn, uint32_t step) = 0;
+};
+
+#endif
+
+class Messenger {
+private:
+ std::deque<Dispatcher*> dispatchers;
+ std::deque<Dispatcher*> fast_dispatchers;
+ ZTracer::Endpoint trace_endpoint;
+
+protected:
+ void set_endpoint_addr(const entity_addr_t& a,
+ const entity_name_t &name);
+
+protected:
+ /// the "name" of the local daemon. eg client.99
+ entity_name_t my_name;
+
+ /// my addr
+ safe_item_history<entity_addrvec_t> my_addrs;
+
+ int default_send_priority;
+ /// std::set to true once the Messenger has started, and std::set to false on shutdown
+ bool started;
+ uint32_t magic;
+ int socket_priority;
+
+public:
+ AuthClient *auth_client = 0;
+ AuthServer *auth_server = 0;
+
+#ifdef UNIT_TESTS_BUILT
+ Interceptor *interceptor = nullptr;
+#endif
+
+ /**
+ * The CephContext this Messenger uses. Many other components initialize themselves
+ * from this value.
+ */
+ CephContext *cct;
+ int crcflags;
+
+ using Policy = ceph::net::Policy<Throttle>;
+
+public:
+ // allow unauthenticated connections. This is needed for
+ // compatibility with pre-nautilus OSDs, which do not authenticate
+ // the heartbeat sessions.
+ bool require_authorizer = true;
+
+protected:
+ // for authentication
+ AuthRegistry auth_registry;
+
+public:
+ /**
+ * Messenger constructor. Call this from your implementation.
+ * Messenger users should construct full implementations directly,
+ * or use the create() function.
+ */
+ Messenger(CephContext *cct_, entity_name_t w);
+ virtual ~Messenger() {}
+
+ /**
+ * create a new messenger
+ *
+ * Create a new messenger instance, with whatever implementation is
+ * available or specified via the configuration in cct.
+ *
+ * @param cct context
+ * @param type name of messenger type
+ * @param name entity name to register
+ * @param lname logical name of the messenger in this process (e.g., "client")
+ * @param nonce nonce value to uniquely identify this instance on the current host
+ */
+ static Messenger *create(CephContext *cct,
+ const std::string &type,
+ entity_name_t name,
+ std::string lname,
+ uint64_t nonce);
+
+ static uint64_t get_random_nonce();
+ static uint64_t get_pid_nonce();
+
+ /**
+ * create a new messenger
+ *
+ * Create a new messenger instance.
+ * Same as the above, but a slightly simpler interface for clients:
+ * - Generate a random nonce
+ * - get the messenger type from cct
+ * - use the client entity_type
+ *
+ * @param cct context
+ * @param lname logical name of the messenger in this process (e.g., "client")
+ */
+ static Messenger *create_client_messenger(CephContext *cct, std::string lname);
+
+ /**
+ * @defgroup Accessors
+ * @{
+ */
+ int get_mytype() const { return my_name.type(); }
+
+ /**
+ * Retrieve the Messenger's name
+ *
+ * @return A const reference to the name this Messenger
+ * currently believes to be its own.
+ */
+ const entity_name_t& get_myname() { return my_name; }
+
+ /**
+ * Retrieve the Messenger's address.
+ *
+ * @return A const reference to the address this Messenger
+ * currently believes to be its own.
+ */
+ const entity_addrvec_t& get_myaddrs() {
+ return *my_addrs;
+ }
+
+ /**
+ * get legacy addr for myself, suitable for protocol v1
+ *
+ * Note that myaddrs might be a proper addrvec with v1 in it, or it might be an
+ * ANY addr (if i am a pure client).
+ */
+ entity_addr_t get_myaddr_legacy() {
+ return my_addrs->as_legacy_addr();
+ }
+
+
+ /**
+ * std::set messenger's instance
+ */
+ uint32_t get_magic() { return magic; }
+ void set_magic(int _magic) { magic = _magic; }
+
+ void set_auth_client(AuthClient *ac) {
+ auth_client = ac;
+ }
+ void set_auth_server(AuthServer *as) {
+ auth_server = as;
+ }
+
+protected:
+ /**
+ * std::set messenger's address
+ */
+ virtual void set_myaddrs(const entity_addrvec_t& a) {
+ my_addrs = a;
+ set_endpoint_addr(a.front(), my_name);
+ }
+public:
+ /**
+ * @return the zipkin trace endpoint
+ */
+ const ZTracer::Endpoint* get_trace_endpoint() const {
+ return &trace_endpoint;
+ }
+
+ /**
+ * set the name of the local entity. The name is reported to others and
+ * can be changed while the system is running, but doing so at incorrect
+ * times may have bad results.
+ *
+ * @param m The name to std::set.
+ */
+ void set_myname(const entity_name_t& m) { my_name = m; }
+
+ /**
+ * set the unknown address components for this Messenger.
+ * This is useful if the Messenger doesn't know its full address just by
+ * binding, but another Messenger on the same interface has already learned
+ * its full address. This function does not fill in known address elements,
+ * cause a rebind, or do anything of that sort.
+ *
+ * @param addr The address to use as a template.
+ */
+ virtual bool set_addr_unknowns(const entity_addrvec_t &addrs) = 0;
+ /**
+ * set the address for this Messenger. This is useful if the Messenger
+ * binds to a specific address but advertises a different address on the
+ * the network.
+ *
+ * @param addr The address to use.
+ */
+ virtual void set_addrs(const entity_addrvec_t &addr) = 0;
+ /// Get the default send priority.
+ int get_default_send_priority() { return default_send_priority; }
+ /**
+ * Get the number of Messages which the Messenger has received
+ * but not yet dispatched.
+ */
+ virtual int get_dispatch_queue_len() = 0;
+
+ /**
+ * Get age of oldest undelivered message
+ * (0 if the queue is empty)
+ */
+ virtual double get_dispatch_queue_max_age(utime_t now) = 0;
+
+ /**
+ * @} // Accessors
+ */
+
+ /**
+ * @defgroup Configuration
+ * @{
+ */
+ /**
+ * set the cluster protocol in use by this daemon.
+ * This is an init-time function and cannot be called after calling
+ * start() or bind().
+ *
+ * @param p The cluster protocol to use. Defined externally.
+ */
+ virtual void set_cluster_protocol(int p) = 0;
+ /**
+ * set a policy which is applied to all peers who do not have a type-specific
+ * Policy.
+ * This is an init-time function and cannot be called after calling
+ * start() or bind().
+ *
+ * @param p The Policy to apply.
+ */
+ virtual void set_default_policy(Policy p) = 0;
+ /**
+ * set a policy which is applied to all peers of the given type.
+ * This is an init-time function and cannot be called after calling
+ * start() or bind().
+ *
+ * @param type The peer type this policy applies to.
+ * @param p The policy to apply.
+ */
+ virtual void set_policy(int type, Policy p) = 0;
+ /**
+ * set the Policy associated with a type of peer.
+ *
+ * This can be called either on initial setup, or after connections
+ * are already established. However, the policies for existing
+ * connections will not be affected; the new policy will only apply
+ * to future connections.
+ *
+ * @param t The peer type to get the default policy for.
+ * @return A const Policy reference.
+ */
+ virtual Policy get_policy(int t) = 0;
+ /**
+ * Get the default Policy
+ *
+ * @return A const Policy reference.
+ */
+ virtual Policy get_default_policy() = 0;
+ /**
+ * set Throttlers applied to all Messages from the given type of peer
+ *
+ * This is an init-time function and cannot be called after calling
+ * start() or bind().
+ *
+ * @param type The peer type the Throttlers will apply to.
+ * @param bytes The Throttle for the number of bytes carried by the message
+ * @param msgs The Throttle for the number of messages for this @p type
+ * @note The Messenger does not take ownership of the Throttle pointers, but
+ * you must not destroy them before you destroy the Messenger.
+ */
+ virtual void set_policy_throttlers(int type, Throttle *bytes, Throttle *msgs=NULL) = 0;
+ /**
+ * set the default send priority
+ *
+ * This is an init-time function and must be called *before* calling
+ * start().
+ *
+ * @param p The cluster protocol to use. Defined externally.
+ */
+ void set_default_send_priority(int p) {
+ ceph_assert(!started);
+ default_send_priority = p;
+ }
+ /**
+ * set the priority(SO_PRIORITY) for all packets to be sent on this socket.
+ *
+ * Linux uses this value to order the networking queues: packets with a higher
+ * priority may be processed first depending on the selected device queueing
+ * discipline.
+ *
+ * @param prio The priority. Setting a priority outside the range 0 to 6
+ * requires the CAP_NET_ADMIN capability.
+ */
+ void set_socket_priority(int prio) {
+ socket_priority = prio;
+ }
+ /**
+ * Get the socket priority
+ *
+ * @return the socket priority
+ */
+ int get_socket_priority() {
+ return socket_priority;
+ }
+ /**
+ * Add a new Dispatcher to the front of the list. If you add
+ * a Dispatcher which is already included, it will get a duplicate
+ * entry. This will reduce efficiency but not break anything.
+ *
+ * @param d The Dispatcher to insert into the list.
+ */
+ void add_dispatcher_head(Dispatcher *d) {
+ bool first = dispatchers.empty();
+ dispatchers.push_front(d);
+ if (d->ms_can_fast_dispatch_any())
+ fast_dispatchers.push_front(d);
+ if (first)
+ ready();
+ }
+ /**
+ * Add a new Dispatcher to the end of the list. If you add
+ * a Dispatcher which is already included, it will get a duplicate
+ * entry. This will reduce efficiency but not break anything.
+ *
+ * @param d The Dispatcher to insert into the list.
+ */
+ void add_dispatcher_tail(Dispatcher *d) {
+ bool first = dispatchers.empty();
+ dispatchers.push_back(d);
+ if (d->ms_can_fast_dispatch_any())
+ fast_dispatchers.push_back(d);
+ if (first)
+ ready();
+ }
+ /**
+ * Bind the Messenger to a specific address. If bind_addr
+ * is not completely filled in the system will use the
+ * valid portions and cycle through the unset ones (eg, the port)
+ * in an unspecified order.
+ *
+ * @param bind_addr The address to bind to.
+ * @return 0 on success, or -1 on error, or -errno if
+ * we can be more specific about the failure.
+ */
+ virtual int bind(const entity_addr_t& bind_addr) = 0;
+
+ virtual int bindv(const entity_addrvec_t& addrs);
+
+ /**
+ * This function performs a full restart of the Messenger component,
+ * whatever that means. Other entities who connect to this
+ * Messenger post-rebind() should perceive it as a new entity which
+ * they have not previously contacted, and it MUST bind to a
+ * different address than it did previously.
+ *
+ * @param avoid_ports Additional port to avoid binding to.
+ */
+ virtual int rebind(const std::set<int>& avoid_ports) { return -EOPNOTSUPP; }
+ /**
+ * Bind the 'client' Messenger to a specific address.Messenger will bind
+ * the address before connect to others when option ms_bind_before_connect
+ * is true.
+ * @param bind_addr The address to bind to.
+ * @return 0 on success, or -1 on error, or -errno if
+ * we can be more specific about the failure.
+ */
+ virtual int client_bind(const entity_addr_t& bind_addr) = 0;
+
+ /**
+ * reset the 'client' Messenger. Mark all the existing Connections down
+ * and update 'nonce'.
+ */
+ virtual int client_reset() = 0;
+
+
+ virtual bool should_use_msgr2() {
+ return false;
+ }
+
+ /**
+ * @} // Configuration
+ */
+
+ /**
+ * @defgroup Startup/Shutdown
+ * @{
+ */
+ /**
+ * Perform any resource allocation, thread startup, etc
+ * that is required before attempting to connect to other
+ * Messengers or transmit messages.
+ * Once this function completes, started shall be set to true.
+ *
+ * @return 0 on success; -errno on failure.
+ */
+ virtual int start() { started = true; return 0; }
+
+ // shutdown
+ /**
+ * Block until the Messenger has finished shutting down (according
+ * to the shutdown() function).
+ * It is valid to call this after calling shutdown(), but it must
+ * be called before deleting the Messenger.
+ */
+ virtual void wait() = 0;
+ /**
+ * Initiate a shutdown of the Messenger.
+ *
+ * @return 0 on success, -errno otherwise.
+ */
+ virtual int shutdown() { started = false; return 0; }
+ /**
+ * @} // Startup/Shutdown
+ */
+
+ /**
+ * @defgroup Messaging
+ * @{
+ */
+ /**
+ * Queue the given Message for the given entity.
+ * Success in this function does not guarantee Message delivery, only
+ * success in queueing the Message. Other guarantees may be provided based
+ * on the Connection policy associated with the dest.
+ *
+ * @param m The Message to send. The Messenger consumes a single reference
+ * when you pass it in.
+ * @param dest The entity to send the Message to.
+ *
+ * DEPRECATED: please do not use this interface for any new code;
+ * use the Connection* variant.
+ *
+ * @return 0 on success, or -errno on failure.
+ */
+ virtual int send_to(
+ Message *m,
+ int type,
+ const entity_addrvec_t& addr) = 0;
+ int send_to_mon(
+ Message *m, const entity_addrvec_t& addrs) {
+ return send_to(m, CEPH_ENTITY_TYPE_MON, addrs);
+ }
+ int send_to_mds(
+ Message *m, const entity_addrvec_t& addrs) {
+ return send_to(m, CEPH_ENTITY_TYPE_MDS, addrs);
+ }
+
+ /**
+ * @} // Messaging
+ */
+ /**
+ * @defgroup Connection Management
+ * @{
+ */
+ /**
+ * Get the Connection object associated with a given entity. If a
+ * Connection does not exist, create one and establish a logical connection.
+ * The caller owns a reference when this returns. Call ->put() when you're
+ * done!
+ *
+ * @param dest The entity to get a connection for.
+ */
+ virtual ConnectionRef connect_to(
+ int type, const entity_addrvec_t& dest,
+ bool anon=false, bool not_local_dest=false) = 0;
+ ConnectionRef connect_to_mon(const entity_addrvec_t& dest,
+ bool anon=false, bool not_local_dest=false) {
+ return connect_to(CEPH_ENTITY_TYPE_MON, dest, anon, not_local_dest);
+ }
+ ConnectionRef connect_to_mds(const entity_addrvec_t& dest,
+ bool anon=false, bool not_local_dest=false) {
+ return connect_to(CEPH_ENTITY_TYPE_MDS, dest, anon, not_local_dest);
+ }
+ ConnectionRef connect_to_osd(const entity_addrvec_t& dest,
+ bool anon=false, bool not_local_dest=false) {
+ return connect_to(CEPH_ENTITY_TYPE_OSD, dest, anon, not_local_dest);
+ }
+ ConnectionRef connect_to_mgr(const entity_addrvec_t& dest,
+ bool anon=false, bool not_local_dest=false) {
+ return connect_to(CEPH_ENTITY_TYPE_MGR, dest, anon, not_local_dest);
+ }
+
+ /**
+ * Get the Connection object associated with ourselves.
+ */
+ virtual ConnectionRef get_loopback_connection() = 0;
+ /**
+ * Mark down a Connection to a remote.
+ *
+ * This will cause us to discard our outgoing queue for them, and if
+ * reset detection is enabled in the policy and the endpoint tries
+ * to reconnect they will discard their queue when we inform them of
+ * the session reset.
+ *
+ * If there is no Connection to the given dest, it is a no-op.
+ *
+ * This generates a RESET notification to the Dispatcher.
+ *
+ * DEPRECATED: please do not use this interface for any new code;
+ * use the Connection* variant.
+ *
+ * @param a The address to mark down.
+ */
+ virtual void mark_down(const entity_addr_t& a) = 0;
+ virtual void mark_down_addrs(const entity_addrvec_t& a) {
+ mark_down(a.legacy_addr());
+ }
+ /**
+ * Mark all the existing Connections down. This is equivalent
+ * to iterating over all Connections and calling mark_down()
+ * on each.
+ *
+ * This will generate a RESET event for each closed connections.
+ */
+ virtual void mark_down_all() = 0;
+ /**
+ * @} // Connection Management
+ */
+protected:
+ /**
+ * @defgroup Subclass Interfacing
+ * @{
+ */
+ /**
+ * A courtesy function for Messenger implementations which
+ * will be called when we receive our first Dispatcher.
+ */
+ virtual void ready() { }
+ /**
+ * @} // Subclass Interfacing
+ */
+public:
+#ifdef CEPH_USE_SIGPIPE_BLOCKER
+ /**
+ * We need to disable SIGPIPE on all platforms, and if they
+ * don't give us a better mechanism (read: are on Solaris) that
+ * means blocking the signal whenever we do a send or sendmsg...
+ * That means any implementations must invoke MSGR_SIGPIPE_STOPPER in-scope
+ * whenever doing so. On most systems that's blank, but on systems where
+ * it's needed we construct an RAII object to plug and un-plug the SIGPIPE.
+ * See http://www.microhowto.info/howto/ignore_sigpipe_without_affecting_other_threads_in_a_process.html
+ */
+ struct sigpipe_stopper {
+ bool blocked;
+ sigset_t existing_mask;
+ sigset_t pipe_mask;
+ sigpipe_stopper() {
+ sigemptyset(&pipe_mask);
+ sigaddset(&pipe_mask, SIGPIPE);
+ sigset_t signals;
+ sigemptyset(&signals);
+ sigpending(&signals);
+ if (sigismember(&signals, SIGPIPE)) {
+ blocked = false;
+ } else {
+ blocked = true;
+ int r = pthread_sigmask(SIG_BLOCK, &pipe_mask, &existing_mask);
+ ceph_assert(r == 0);
+ }
+ }
+ ~sigpipe_stopper() {
+ if (blocked) {
+ struct timespec nowait{0};
+ int r = sigtimedwait(&pipe_mask, 0, &nowait);
+ ceph_assert(r == EAGAIN || r == 0);
+ r = pthread_sigmask(SIG_SETMASK, &existing_mask, 0);
+ ceph_assert(r == 0);
+ }
+ }
+ };
+# define MSGR_SIGPIPE_STOPPER Messenger::sigpipe_stopper stopper();
+#else
+# define MSGR_SIGPIPE_STOPPER
+#endif
+ /**
+ * @defgroup Dispatcher Interfacing
+ * @{
+ */
+ /**
+ * Determine whether a message can be fast-dispatched. We will
+ * query each Dispatcher in sequence to determine if they are
+ * capable of handling a particular message via "fast dispatch".
+ *
+ * @param m The Message we are testing.
+ */
+ bool ms_can_fast_dispatch(const ceph::cref_t<Message>& m) {
+ for (const auto &dispatcher : fast_dispatchers) {
+ if (dispatcher->ms_can_fast_dispatch2(m))
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Deliver a single Message via "fast dispatch".
+ *
+ * @param m The Message we are fast dispatching.
+ * If none of our Dispatchers can handle it, ceph_abort().
+ */
+ void ms_fast_dispatch(const ceph::ref_t<Message> &m) {
+ m->set_dispatch_stamp(ceph_clock_now());
+ for (const auto &dispatcher : fast_dispatchers) {
+ if (dispatcher->ms_can_fast_dispatch2(m)) {
+ dispatcher->ms_fast_dispatch2(m);
+ return;
+ }
+ }
+ ceph_abort();
+ }
+ void ms_fast_dispatch(Message *m) {
+ return ms_fast_dispatch(ceph::ref_t<Message>(m, false)); /* consume ref */
+ }
+ /**
+ *
+ */
+ void ms_fast_preprocess(const ceph::ref_t<Message> &m) {
+ for (const auto &dispatcher : fast_dispatchers) {
+ dispatcher->ms_fast_preprocess2(m);
+ }
+ }
+ /**
+ * Deliver a single Message. Send it to each Dispatcher
+ * in sequence until one of them handles it.
+ * If none of our Dispatchers can handle it, ceph_abort().
+ *
+ * @param m The Message to deliver.
+ */
+ void ms_deliver_dispatch(const ceph::ref_t<Message> &m) {
+ m->set_dispatch_stamp(ceph_clock_now());
+ for (const auto &dispatcher : dispatchers) {
+ if (dispatcher->ms_dispatch2(m))
+ return;
+ }
+ lsubdout(cct, ms, 0) << "ms_deliver_dispatch: unhandled message " << m << " " << *m << " from "
+ << m->get_source_inst() << dendl;
+ ceph_assert(!cct->_conf->ms_die_on_unhandled_msg);
+ }
+ void ms_deliver_dispatch(Message *m) {
+ return ms_deliver_dispatch(ceph::ref_t<Message>(m, false)); /* consume ref */
+ }
+ /**
+ * Notify each Dispatcher of a new Connection. Call
+ * this function whenever a new Connection is initiated or
+ * reconnects.
+ *
+ * @param con Pointer to the new Connection.
+ */
+ void ms_deliver_handle_connect(Connection *con) {
+ for (const auto& dispatcher : dispatchers) {
+ dispatcher->ms_handle_connect(con);
+ }
+ }
+
+ /**
+ * Notify each fast Dispatcher of a new Connection. Call
+ * this function whenever a new Connection is initiated or
+ * reconnects.
+ *
+ * @param con Pointer to the new Connection.
+ */
+ void ms_deliver_handle_fast_connect(Connection *con) {
+ for (const auto& dispatcher : fast_dispatchers) {
+ dispatcher->ms_handle_fast_connect(con);
+ }
+ }
+
+ /**
+ * Notify each Dispatcher of a new incoming Connection. Call
+ * this function whenever a new Connection is accepted.
+ *
+ * @param con Pointer to the new Connection.
+ */
+ void ms_deliver_handle_accept(Connection *con) {
+ for (const auto& dispatcher : dispatchers) {
+ dispatcher->ms_handle_accept(con);
+ }
+ }
+
+ /**
+ * Notify each fast Dispatcher of a new incoming Connection. Call
+ * this function whenever a new Connection is accepted.
+ *
+ * @param con Pointer to the new Connection.
+ */
+ void ms_deliver_handle_fast_accept(Connection *con) {
+ for (const auto& dispatcher : fast_dispatchers) {
+ dispatcher->ms_handle_fast_accept(con);
+ }
+ }
+
+ /**
+ * Notify each Dispatcher of a Connection which may have lost
+ * Messages. Call this function whenever you detect that a lossy Connection
+ * has been disconnected.
+ *
+ * @param con Pointer to the broken Connection.
+ */
+ void ms_deliver_handle_reset(Connection *con) {
+ for (const auto& dispatcher : dispatchers) {
+ if (dispatcher->ms_handle_reset(con))
+ return;
+ }
+ }
+ /**
+ * Notify each Dispatcher of a Connection which has been "forgotten" about
+ * by the remote end, implying that messages have probably been lost.
+ * Call this function whenever you detect a reset.
+ *
+ * @param con Pointer to the broken Connection.
+ */
+ void ms_deliver_handle_remote_reset(Connection *con) {
+ for (const auto& dispatcher : dispatchers) {
+ dispatcher->ms_handle_remote_reset(con);
+ }
+ }
+
+ /**
+ * Notify each Dispatcher of a Connection for which reconnection
+ * attempts are being refused. Call this function whenever you
+ * detect that a lossy Connection has been disconnected and it's
+ * impossible to reconnect.
+ *
+ * @param con Pointer to the broken Connection.
+ */
+ void ms_deliver_handle_refused(Connection *con) {
+ for (const auto& dispatcher : dispatchers) {
+ if (dispatcher->ms_handle_refused(con))
+ return;
+ }
+ }
+
+ void set_require_authorizer(bool b) {
+ require_authorizer = b;
+ }
+
+ /**
+ * @} // Dispatcher Interfacing
+ */
+};
+
+
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 07:12:37 +0000