package salticidae // #include // #include "salticidae/network.h" import "C" import "runtime" // The C pointer type for a MsgNetwork handle. type CMsgNetwork = *C.msgnetwork_t type msgNetwork struct { inner CMsgNetwork } // The handle for a message network. type MsgNetwork = *msgNetwork // Convert an existing C pointer into a go object. Notice that when the go // object does *not* own the resource of the C pointer, so it is only valid to // the extent in which the given C pointer is valid. The C memory will not be // deallocated when the go object is finalized by GC. This applies to all other // "FromC" functions. func MsgNetworkFromC(ptr CMsgNetwork) MsgNetwork { return &msgNetwork{ inner: ptr } } // The C pointer type for a MsgNetworkConn handle. type CMsgNetworkConn = *C.msgnetwork_conn_t type msgNetworkConn struct { inner CMsgNetworkConn } // The handle for a message network connection. type MsgNetworkConn = *msgNetworkConn func MsgNetworkConnFromC(ptr CMsgNetworkConn) MsgNetworkConn { return &msgNetworkConn{ inner: ptr } } var ( CONN_MODE_ACTIVE = MsgNetworkConnMode(C.CONN_MODE_ACTIVE) CONN_MODE_PASSIVE = MsgNetworkConnMode(C.CONN_MODE_PASSIVE) ) // The connection mode. CONN_MODE_ACTIVE: a connection established from the // local side. CONN_MODE_PASSIVE: a connection established from the remote // side. CONN_MODE_DEAD: a connection that is already closed. type MsgNetworkConnMode = C.msgnetwork_conn_mode_t func (self MsgNetworkConn) free() { C.msgnetwork_conn_free(self.inner) } // Get the corresponding MsgNetwork handle that manages this connection. The // returned handle is only valid during the lifetime of this connection. func (self MsgNetworkConn) GetNet() MsgNetwork { return MsgNetworkFromC(C.msgnetwork_conn_get_net(self.inner)) } func (self MsgNetworkConn) GetMode() MsgNetworkConnMode { return C.msgnetwork_conn_get_mode(self.inner) } // Get the address of the remote end of this connection. Use Copy() to make a // copy of the address if you want to use the address object beyond the // lifetime of the connection. func (self MsgNetworkConn) GetAddr() NetAddr { return NetAddrFromC(C.msgnetwork_conn_get_addr(self.inner)) } // Check if the connection has been terminated. func (self MsgNetworkConn) IsTerminated() bool { return bool(C.msgnetwork_conn_is_terminated(self.inner)) } // Get the certificate of the remote end of this connection. Use Copy() to make a // copy of the certificate if you want to use the certificate object beyond the // lifetime of the connection. func (self MsgNetworkConn) GetPeerCert() X509 { return &x509{ inner: C.msgnetwork_conn_get_peer_cert(self.inner) } } // Make a copy of the object. This is required if you want to keep the // connection passed as a callback parameter by other salticidae methods (such // like MsgNetwork/PeerNetwork). func (self MsgNetworkConn) Copy() MsgNetworkConn { res := MsgNetworkConnFromC(C.msgnetwork_conn_copy(self.inner)) runtime.SetFinalizer(res, func(self MsgNetworkConn) { self.free() }) return res } // The C pointer type for a MsgNetworkConfig object. type CMsgNetworkConfig = *C.msgnetwork_config_t type msgNetworkConfig struct { inner CMsgNetworkConfig } // Configuration for MsgNetwork. type MsgNetworkConfig = *msgNetworkConfig func MsgNetworkConfigFromC(ptr CMsgNetworkConfig) MsgNetworkConfig { return &msgNetworkConfig{ inner: ptr } } // Create the configuration object with default settings. func NewMsgNetworkConfig() MsgNetworkConfig { res := MsgNetworkConfigFromC(C.msgnetwork_config_new()) runtime.SetFinalizer(res, func(self MsgNetworkConfig) { self.free() }) return res } func (self MsgNetworkConfig) free() { C.msgnetwork_config_free(self.inner) } // Set the number of consecutive read attempts in the message delivery queue. // Usually the default value is good enough. This is used to make the tradeoff // between the event loop fairness and the amortization of syscall cost. func (self MsgNetworkConfig) BurstSize(size int) { C.msgnetwork_config_burst_size(self.inner, C.size_t(size)) } // Set the maximum backlogs (see POSIX TCP backlog). func (self MsgNetworkConfig) MaxListenBacklog(backlog int) { C.msgnetwork_config_max_listen_backlog(self.inner, C.int(backlog)) } // Set the timeout for connecting to the remote (in seconds). func (self MsgNetworkConfig) ConnServerTimeout(timeout float64) { C.msgnetwork_config_conn_server_timeout(self.inner, C.double(timeout)) } // Set the size for an inbound data chunk (per read() syscall). func (self MsgNetworkConfig) SegBuffSize(size int) { C.msgnetwork_config_seg_buff_size(self.inner, C.size_t(size)) } // Set the number of worker threads. func (self MsgNetworkConfig) NWorker(nworker int) { C.msgnetwork_config_nworker(self.inner, C.size_t(nworker)) } // Set the capacity of the send buffer. func (self MsgNetworkConfig) QueueCapacity(capacity int) { C.msgnetwork_config_queue_capacity(self.inner, C.size_t(capacity)) } // Specify whether to use SSL/TLS. When this flag is enabled, MsgNetwork uses // TLSKey (or TLSKeyFile) or TLSCert (or TLSCertFile) to setup the underlying // OpenSSL. func (self MsgNetworkConfig) EnableTLS(enabled bool) { C.msgnetwork_config_enable_tls(self.inner, C.bool(enabled)) } // Load the TLS key from a file. The file should be an unencrypted PEM file. // Use TLSKey() instead for more complex usage. func (self MsgNetworkConfig) TLSKeyFile(fname string) { c_str := C.CString(fname) C.msgnetwork_config_tls_key_file(self.inner, c_str) C.free(rawptr_t(c_str)) } // Load the TLS certificate from a file. The file should be an unencrypted // (X509) PEM file. Use TLSCert() instead for more complex usage. func (self MsgNetworkConfig) TLSCertFile(fname string) { c_str := C.CString(fname) C.msgnetwork_config_tls_cert_file(self.inner, c_str) C.free(rawptr_t(c_str)) } // Use the given TLS key. This overrides TLSKeyFile(). pkey will be moved and // kept by the library. Thus, no methods of msg involving the payload should be // called afterwards. func (self MsgNetworkConfig) TLSKeyByMove(pkey PKey) { C.msgnetwork_config_tls_key_by_move(self.inner, pkey.inner) } //// Load the TLS certificate from a file. The file should be an unencrypted //// (X509) PEM file. Use TLSCert() instead for more complex usage. //func (self MsgNetworkConfig) TLSCert(fname string) { // c_str := C.CString(fname) // C.msgnetwork_config_tls_cert(self.inner, c_str) // C.free(rawptr_t(c_str)) //} // Create a message network handle which is attached to given event loop. func NewMsgNetwork(ec EventContext, config MsgNetworkConfig, err *Error) MsgNetwork { res := MsgNetworkFromC(C.msgnetwork_new(ec.inner, config.inner, err)) if res != nil { ec.attach(rawptr_t(res.inner), res) runtime.SetFinalizer(res, func(self MsgNetwork) { self.free() }) } return res } func (self MsgNetwork) free() { C.msgnetwork_free(self.inner) } // Start the message network (by spawning worker threads). This should be // called before using any other methods. func (self MsgNetwork) Start() { C.msgnetwork_start(self.inner) } // Listen to the specified network address. func (self MsgNetwork) Listen(addr NetAddr, err *Error) { C.msgnetwork_listen(self.inner, addr.inner, err) } // Stop the message network. No other methods should be called after this. func (self MsgNetwork) Stop() { C.msgnetwork_stop(self.inner) } // Send a message through the given connection. func (self MsgNetwork) SendMsg(msg Msg, conn MsgNetworkConn) { C.msgnetwork_send_msg(self.inner, msg.inner, conn.inner) } // Send a message through the given connection, using a worker thread to // seralize and put data to the send buffer. The payload contained in the given // msg will be moved and sent. Thus, no methods of msg involving the payload // should be called afterwards. func (self MsgNetwork) SendMsgDeferredByMove(msg Msg, conn MsgNetworkConn) { C.msgnetwork_send_msg_deferred_by_move(self.inner, msg.inner, conn.inner) } // Try to connect to a remote address. The connection handle is returned. The // returned connection handle could be kept in your program. func (self MsgNetwork) Connect(addr NetAddr, blocking bool, err *Error) MsgNetworkConn { res := MsgNetworkConnFromC(C.msgnetwork_connect(self.inner, addr.inner, C.bool(blocking), err)) if res != nil { runtime.SetFinalizer(res, func(self MsgNetworkConn) { self.free() }) } return res } // Terminate the given connection. func (self MsgNetwork) Terminate(conn MsgNetworkConn) { C.msgnetwork_terminate(self.inner, conn.inner) } // The C function pointer type which takes msg_t*, msgnetwork_conn_t* and void* // (passing in the custom user data allocated by C.malloc) as parameters. type MsgNetworkMsgCallback = C.msgnetwork_msg_callback_t // The C function pointer type which takes msgnetwork_conn_t*, bool (true for // the connection is established, false for the connection is terminated) and // void* as parameters. type MsgNetworkConnCallback = C.msgnetwork_conn_callback_t // The C function Pointer type which takes SalticidaeCError* and void* as parameters. type MsgNetworkErrorCallback = C.msgnetwork_error_callback_t // Register a message handler for the type of message identified by opcode. The // callback function will be invoked upon the delivery of each message with the // given opcode, by the thread of the event loop the MsgNetwork is attached to. func (self MsgNetwork) RegHandler(opcode Opcode, callback MsgNetworkMsgCallback, userdata rawptr_t) { C.msgnetwork_reg_handler(self.inner, C._opcode_t(opcode), callback, userdata) } // Register a connection handler invoked when the connection state is changed. func (self MsgNetwork) RegConnHandler(callback MsgNetworkConnCallback, userdata rawptr_t) { C.msgnetwork_reg_conn_handler(self.inner, callback, userdata) } // Register an error handler invoked when there is recoverable errors during any // asynchronous call/execution inside the MsgNetwork. func (self MsgNetwork) RegErrorHandler(callback MsgNetworkErrorCallback, userdata rawptr_t) { C.msgnetwork_reg_error_handler(self.inner, callback, userdata) } // The C pointer type for a PeerNetwork handle. type CPeerNetwork = *C.peernetwork_t type peerNetwork struct { inner CPeerNetwork } // The handle for a peer-to-peer network. type PeerNetwork = *peerNetwork func PeerNetworkFromC(ptr CPeerNetwork) PeerNetwork { return &peerNetwork{ inner: ptr } } // The C pointer type for a PeerNetworkConn handle. type CPeerNetworkConn = *C.peernetwork_conn_t type peerNetworkConn struct { inner CPeerNetworkConn } // The handle for a PeerNetwork connection. type PeerNetworkConn = *peerNetworkConn func PeerNetworkConnFromC(ptr CPeerNetworkConn) PeerNetworkConn { return &peerNetworkConn{ inner: ptr } } var ( ADDR_BASED = PeerNetworkIdMode(C.ID_MODE_ADDR_BASED) CERT_BASED = PeerNetworkIdMode(C.ID_MODE_CERT_BASED) ) // The identity mode. ID_MODE_IP_BASED: a remote peer is identified by the IP // only. ID_MODE_IP_PORT_BASED: a remote peer is identified by IP + port // number. type PeerNetworkIdMode = C.peernetwork_id_mode_t // The C pointer type for a PeerNetworkConfig handle. type CPeerNetworkConfig = *C.peernetwork_config_t type peerNetworkConfig struct { inner CPeerNetworkConfig } // Configuration for PeerNetwork. type PeerNetworkConfig = *peerNetworkConfig func PeerNetworkConfigFromC(ptr CPeerNetworkConfig) PeerNetworkConfig { return &peerNetworkConfig{ inner: ptr } } // Create the configuration object with default settings. func NewPeerNetworkConfig() PeerNetworkConfig { res := PeerNetworkConfigFromC(C.peernetwork_config_new()) runtime.SetFinalizer(res, func(self PeerNetworkConfig) { self.free() }) return res } func (self PeerNetworkConfig) free() { C.peernetwork_config_free(self.inner) } // Set the connection retry delay (in seconds). func (self PeerNetworkConfig) RetryConnDelay(t_sec float64) { C.peernetwork_config_retry_conn_delay(self.inner, C.double(t_sec)) } // Set the period for sending ping messsages (in seconds). func (self PeerNetworkConfig) PingPeriod(t_sec float64) { C.peernetwork_config_ping_period(self.inner, C.double(t_sec)) } // Set the time it takes after sending a ping message before a connection is // considered as broken. func (self PeerNetworkConfig) ConnTimeout(t_sec float64) { C.peernetwork_config_conn_timeout(self.inner, C.double(t_sec)) } // Set the identity mode. func (self PeerNetworkConfig) IdMode(mode PeerNetworkIdMode) { C.peernetwork_config_id_mode(self.inner, mode) } // Use the PeerNetworkConfig object as a MsgNetworkConfig object (to invoke the // methods inherited from MsgNetworkConfig, such as NWorker). func (self PeerNetworkConfig) AsMsgNetworkConfig() MsgNetworkConfig { return MsgNetworkConfigFromC(C.peernetwork_config_as_msgnetwork_config(self.inner)) } // Create a peer-to-peer message network handle. func NewPeerNetwork(ec EventContext, config PeerNetworkConfig, err *Error) PeerNetwork { res := PeerNetworkFromC(C.peernetwork_new(ec.inner, config.inner, err)) if res != nil { ec.attach(rawptr_t(res.inner), res) runtime.SetFinalizer(res, func(self PeerNetwork) { self.free() }) } return res } func (self PeerNetwork) free() { C.peernetwork_free(self.inner) } // Add a peer to the list of known peers. The P2P network will try to keep // bi-direction connections to all known peers in the list (through // reconnection and connection deduplication). func (self PeerNetwork) AddPeer(addr NetAddr) { C.peernetwork_add_peer(self.inner, addr.inner) } // Remove a peer from the list of known peers. The P2P network will teardown // the existing bi-direction connection and the PeerHandler callback will not be called. func (self PeerNetwork) DelPeer(addr NetAddr) { C.peernetwork_del_peer(self.inner, addr.inner) } // Test whether a peer is already in the list. func (self PeerNetwork) HasPeer(addr NetAddr) bool { return bool(C.peernetwork_has_peer(self.inner, addr.inner)) } // Get the connection of the known peer. The connection handle is returned. The // returned connection handle could be kept in your program. func (self PeerNetwork) GetPeerConn(addr NetAddr, err *Error) PeerNetworkConn { res := PeerNetworkConnFromC(C.peernetwork_get_peer_conn(self.inner, addr.inner, err)) if res != nil { runtime.SetFinalizer(res, func(self PeerNetworkConn) { self.free() }) } return res } // Use the PeerNetwork handle as a MsgNetwork handle (to invoke the methods // inherited from MsgNetwork, such as RegHandler). func (self PeerNetwork) AsMsgNetwork() MsgNetwork { return MsgNetworkFromC(C.peernetwork_as_msgnetwork(self.inner)) } // Use the MsgNetwork handle as a PeerNetwork handle (forcing the conversion). func (self MsgNetwork) AsPeerNetworkUnsafe() PeerNetwork { return PeerNetworkFromC(C.msgnetwork_as_peernetwork_unsafe(self.inner)) } // Create a MsgNetworkConn handle from a PeerNetworkConn (representing the same // connection). func NewMsgNetworkConnFromPeerNetworkConn(conn PeerNetworkConn) MsgNetworkConn { res := MsgNetworkConnFromC(C.msgnetwork_conn_new_from_peernetwork_conn(conn.inner)) runtime.SetFinalizer(res, func(self MsgNetworkConn) { self.free() }) return res } // Create a PeerNetworkConn handle from a MsgNetworkConn (representing the same // connection and forcing the conversion). func NewPeerNetworkConnFromMsgNetworkConnUnsafe(conn MsgNetworkConn) PeerNetworkConn { res := PeerNetworkConnFromC(C.peernetwork_conn_new_from_msgnetwork_conn_unsafe(conn.inner)) runtime.SetFinalizer(res, func(self PeerNetworkConn) { self.free() }) return res } // Make a copy of the connection handle. func (self PeerNetworkConn) Copy() PeerNetworkConn { res := PeerNetworkConnFromC(C.peernetwork_conn_copy(self.inner)) runtime.SetFinalizer(res, func(self PeerNetworkConn) { self.free() }) return res } // Get the listening address of the remote peer (no Copy() is needed). func (self PeerNetworkConn) GetPeerAddr() NetAddr { res := NetAddrFromC(C.peernetwork_conn_get_peer_addr(self.inner)) runtime.SetFinalizer(res, func(self NetAddr) { self.free() }) return res } func (self PeerNetworkConn) free() { C.peernetwork_conn_free(self.inner) } // Listen to the specified network address. Notice that this method overrides // Listen() in MsgNetwork, so you should always call this one instead of // AsMsgNetwork().Listen(). func (self PeerNetwork) Listen(listenAddr NetAddr, err *Error) { C.peernetwork_listen(self.inner, listenAddr.inner, err) } // Send a message to the given peer. func (self PeerNetwork) SendMsg(msg Msg, addr NetAddr) bool { return bool(C.peernetwork_send_msg(self.inner, msg.inner, addr.inner)) } // Send a message to the given peer, using a worker thread to seralize and put // data to the send buffer. The payload contained in the given msg will be // moved and sent. Thus, no methods of msg involving the payload should be // called afterwards. func (self PeerNetwork) SendMsgDeferredByMove(msg Msg, addr NetAddr) { C.peernetwork_send_msg_deferred_by_move(self.inner, msg.inner, addr.inner) } // Send a message to the given list of peers. The payload contained in the // given msg will be moved and sent. Thus, no methods of msg involving the // payload should be called afterwards. func (self PeerNetwork) MulticastMsgByMove(msg Msg, addrs []NetAddr) { na := NewAddrArrayFromAddrs(addrs) C.peernetwork_multicast_msg_by_move(self.inner, msg.inner, na.inner) } // The C function pointer type which takes peernetwork_conn_t*, bool and void* // (passing in the custom user data allocated by C.malloc) as parameters. type PeerNetworkPeerCallback = C.peernetwork_peer_callback_t // Register a connection handler invoked when p2p connection is established/broken. func (self PeerNetwork) RegPeerHandler(callback PeerNetworkPeerCallback, userdata rawptr_t) { C.peernetwork_reg_peer_handler(self.inner, callback, userdata) } // The C function pointer type which takes netaddr_t*, x509_t* and void* (passing in the // custom user data allocated by C.malloc) as parameters. type PeerNetworkUnknownPeerCallback = C.peernetwork_unknown_peer_callback_t // Register a connection handler invoked when a remote peer that is not in the // list of known peers attempted to connect. By default configuration, the // connection was rejected, and you can call AddPeer() to enroll this peer if // you hope to establish the connection soon. func (self PeerNetwork) RegUnknownPeerHandler(callback PeerNetworkUnknownPeerCallback, userdata rawptr_t) { C.peernetwork_reg_unknown_peer_handler(self.inner, callback, userdata) } // The C pointer type for a ClientNetwork handle. type CClientNetwork = *C.clientnetwork_t type clientNetwork struct { inner CClientNetwork } // The handle for a client-server network. type ClientNetwork = *clientNetwork func ClientNetworkFromC(ptr CClientNetwork) ClientNetwork { return &clientNetwork{ inner: ptr } } // The C pointer type for a ClientNetworkConn handle. type CClientNetworkConn = *C.clientnetwork_conn_t type clientNetworkConn struct { inner CClientNetworkConn } // The handle for a ClientNetwork connection. type ClientNetworkConn = *clientNetworkConn func ClientNetworkConnFromC(ptr CClientNetworkConn) ClientNetworkConn { return &clientNetworkConn{ inner: ptr } } // Create a client-server message network handle. func NewClientNetwork(ec EventContext, config MsgNetworkConfig, err *Error) ClientNetwork { res := ClientNetworkFromC(C.clientnetwork_new(ec.inner, config.inner, err)) if res != nil { ec.attach(rawptr_t(res.inner), res) runtime.SetFinalizer(res, func(self ClientNetwork) { self.free() }) } return res } func (self ClientNetwork) free() { C.clientnetwork_free(self.inner) } // Use the ClientNetwork handle as a MsgNetwork handle (to invoke the methods // inherited from MsgNetwork, such as RegHandler). func (self ClientNetwork) AsMsgNetwork() MsgNetwork { return MsgNetworkFromC(C.clientnetwork_as_msgnetwork(self.inner)) } // Use the MsgNetwork handle as a ClientNetwork handle (forcing the conversion). func (self MsgNetwork) AsClientNetworkUnsafe() ClientNetwork { return ClientNetworkFromC(C.msgnetwork_as_clientnetwork_unsafe(self.inner)) } // Create a MsgNetworkConn handle from a ClientNetworkConn (representing the same // connection). func NewMsgNetworkConnFromClientNetworkConn(conn ClientNetworkConn) MsgNetworkConn { res := MsgNetworkConnFromC(C.msgnetwork_conn_new_from_clientnetwork_conn(conn.inner)) runtime.SetFinalizer(res, func(self MsgNetworkConn) { self.free() }) return res } // Create a ClientNetworkConn handle from a MsgNetworkConn (representing the same // connection and forcing the conversion). func NewClientNetworkConnFromMsgNetworkConnUnsafe(conn MsgNetworkConn) ClientNetworkConn { res := ClientNetworkConnFromC(C.clientnetwork_conn_new_from_msgnetwork_conn_unsafe(conn.inner)) runtime.SetFinalizer(res, func(self ClientNetworkConn) { self.free() }) return res } // Make a copy of the connection handle. func (self ClientNetworkConn) Copy() ClientNetworkConn { res := ClientNetworkConnFromC(C.clientnetwork_conn_copy(self.inner)) runtime.SetFinalizer(res, func(self ClientNetworkConn) { self.free() }) return res } func (self ClientNetworkConn) free() { C.clientnetwork_conn_free(self.inner) } // Send a message to the given client. func (self ClientNetwork) SendMsg(msg Msg, addr NetAddr) bool { return bool(C.clientnetwork_send_msg(self.inner, msg.inner, addr.inner)) } // Send a message to the given client, using a worker thread to seralize and put // data to the send buffer. The payload contained in the given msg will be // moved and sent. Thus, no methods of msg involving the payload should be // called afterwards. func (self ClientNetwork) SendMsgDeferredByMove(msg Msg, addr NetAddr) { C.clientnetwork_send_msg_deferred_by_move(self.inner, msg.inner, addr.inner) }