// -*- C++ -*- //============================================================================= /** * @file SOCK_Connector.h * * @author Doug Schmidt */ //============================================================================= #ifndef ACE_SOCK_CONNECTOR_H #define ACE_SOCK_CONNECTOR_H #include /**/ "ace/pre.h" #include "ace/SOCK_Stream.h" #if !defined (ACE_LACKS_PRAGMA_ONCE) # pragma once #endif /* ACE_LACKS_PRAGMA_ONCE */ ACE_BEGIN_VERSIONED_NAMESPACE_DECL class ACE_QoS_Params; class ACE_Time_Value; /** * @class ACE_SOCK_Connector * * @brief Defines a factory that actively connects to a remote IP * address and TCP port, creating a new @c ACE_SOCK_Stream object. * * The @c ACE_SOCK_Connector doesn't have a socket of its own, * i.e., it simply "borrows" the one from the @c ACE_SOCK_Stream * that's being connected. The reason for this is that the * underlying socket API doesn't use a factory socket to connect * data mode sockets. Therefore, there's no need to inherit * @c ACE_SOCK_Connector from @c ACE_SOCK. A nice side-effect of * this is that @c ACE_SOCK_Connector objects do not store state so * they can be used reentrantly in multithreaded programs. */ class ACE_Export ACE_SOCK_Connector { public: /// Default constructor. ACE_SOCK_Connector (); /** * Actively connect to a peer, producing a connected @c ACE_SOCK_Stream * object if the connection succeeds. * * @param new_stream The @c ACE_SOCK_Stream object that will be connected * to the peer. * @param remote_sap The address that we are trying to connect to. * The protocol family of @c remote_sap is used for * the connected socket. That is, if @c remote_sap * contains an IPv6 address, a socket with family * PF_INET6 will be used, else it will be PF_INET. * @param timeout Pointer to an @c ACE_Time_Value object with amount * of time to wait to connect. If the pointer is 0 * then the call blocks until the connection attempt * is complete, whether it succeeds or fails. If * *timeout == {0, 0} then the connection is done * using nonblocking mode. In this case, if the * connection can't be made immediately, this method * returns -1 and errno == EWOULDBLOCK. * If *timeout > {0, 0} then this is the maximum amount * of time to wait before timing out; if the specified * amount of time passes before the connection is made, * this method returns -1 and errno == ETIME. Note * the difference between this case and when a blocking * connect is attempted that TCP times out - in the latter * case, errno will be ETIMEDOUT. * @param local_sap (optional) The local address to bind to. If it's * the default value of @c ACE_Addr::sap_any then the * OS will choose an unused port. * @param reuse_addr (optional) If the value is 1, the local address * (@c local_sap) is reused, even if it hasn't been * cleaned up yet. * @param flags Ignored. * @param perms Ignored. * @param protocol (optional) If value is 0, default SOCK_STREAM * protocol is selected by kernel (typically TCP). */ ACE_SOCK_Connector (ACE_SOCK_Stream &new_stream, const ACE_Addr &remote_sap, const ACE_Time_Value *timeout = 0, const ACE_Addr &local_sap = ACE_Addr::sap_any, int reuse_addr = 0, int flags = 0, int perms = 0, int protocol = 0); /** * Actively connect to a peer, producing a connected @c ACE_SOCK_Stream * object if the connection succeeds. * * @param new_stream The @c ACE_SOCK_Stream object that will be connected * to the peer. * @param remote_sap The address that we are trying to connect to. * The protocol family of @c remote_sap is used for * the connected socket. That is, if @c remote_sap * contains an IPv6 address, a socket with family * PF_INET6 will be used, else it will be PF_INET. * @param qos_params Contains QoS parameters that are passed to the * IntServ (RSVP) and DiffServ protocols. * @see ACE_QoS_Params. * @param timeout Pointer to an @c ACE_Time_Value object with amount * of time to wait to connect. If the pointer is 0 * then the call blocks until the connection attempt * is complete, whether it succeeds or fails. If * *timeout == {0, 0} then the connection is done * using nonblocking mode. In this case, if the * connection can't be made immediately, this method * returns -1 and errno == EWOULDBLOCK. * If *timeout > {0, 0} then this is the maximum amount * of time to wait before timing out; if the specified * amount of time passes before the connection is made, * this method returns -1 and errno == ETIME. Note * the difference between this case and when a blocking * connect is attempted that TCP times out - in the latter * case, errno will be ETIMEDOUT. * @param local_sap (optional) The local address to bind to. If it's * the default value of @c ACE_Addr::sap_any then the * OS will choose an unused port. * @param reuse_addr (optional) If the value is 1, the local address * (@c local_sap) is reused, even if it hasn't been * cleaned up yet. * @param flags Ignored. * @param perms Ignored. */ ACE_SOCK_Connector (ACE_SOCK_Stream &new_stream, const ACE_Addr &remote_sap, ACE_QoS_Params qos_params, const ACE_Time_Value *timeout = 0, const ACE_Addr &local_sap = ACE_Addr::sap_any, ACE_Protocol_Info *protocolinfo = 0, ACE_SOCK_GROUP g = 0, u_long flags = 0, int reuse_addr = 0, int perms = 0); /** * Actively connect to a peer, producing a connected @c ACE_SOCK_Stream * object if the connection succeeds. * * @param new_stream The @c ACE_SOCK_Stream object that will be connected * to the peer. * @param remote_sap The address that we are trying to connect to. * The protocol family of @c remote_sap is used for * the connected socket. That is, if @c remote_sap * contains an IPv6 address, a socket with family * PF_INET6 will be used, else it will be PF_INET. * @param timeout Pointer to an @c ACE_Time_Value object with amount * of time to wait to connect. If the pointer is 0 * then the call blocks until the connection attempt * is complete, whether it succeeds or fails. If * *timeout == {0, 0} then the connection is done * using nonblocking mode. In this case, if the * connection can't be made immediately, this method * returns -1 and errno == EWOULDBLOCK. * If *timeout > {0, 0} then this is the maximum amount * of time to wait before timing out; if the specified * amount of time passes before the connection is made, * this method returns -1 and errno == ETIME. Note * the difference between this case and when a blocking * connect is attempted that TCP times out - in the latter * case, errno will be ETIMEDOUT. * @param local_sap (optional) The local address to bind to. If it's * the default value of @c ACE_Addr::sap_any then the * OS will choose an unused port. * @param reuse_addr (optional) If the value is 1, the local address * (@c local_sap) is reused, even if it hasn't been * cleaned up yet. * @param flags Ignored. * @param perms Ignored. * @param protocol (optional) If value is 0, default SOCK_STREAM * protocol is selected by kernel (typically TCP). * * @return Returns 0 if the connection succeeds. If it fails, * -1 is returned and errno contains a specific error * code. */ int connect (ACE_SOCK_Stream &new_stream, const ACE_Addr &remote_sap, const ACE_Time_Value *timeout = 0, const ACE_Addr &local_sap = ACE_Addr::sap_any, int reuse_addr = 0, int flags = 0, int perms = 0, int protocol = 0); /** * Actively connect to a peer, producing a connected @c ACE_SOCK_Stream * object if the connection succeeds. * * @param new_stream The @c ACE_SOCK_Stream object that will be connected * to the peer. * @param remote_sap The address that we are trying to connect to. * The protocol family of @c remote_sap is used for * the connected socket. That is, if @c remote_sap * contains an IPv6 address, a socket with family * PF_INET6 will be used, else it will be PF_INET. * @param qos_params Contains QoS parameters that are passed to the * IntServ (RSVP) and DiffServ protocols. * @see ACE_QoS_Params. * @param timeout Pointer to an @c ACE_Time_Value object with amount * of time to wait to connect. If the pointer is 0 * then the call blocks until the connection attempt * is complete, whether it succeeds or fails. If * *timeout == {0, 0} then the connection is done * using nonblocking mode. In this case, if the * connection can't be made immediately, this method * returns -1 and errno == EWOULDBLOCK. * If *timeout > {0, 0} then this is the maximum amount * of time to wait before timing out; if the specified * amount of time passes before the connection is made, * this method returns -1 and errno == ETIME. Note * the difference between this case and when a blocking * connect is attempted that TCP times out - in the latter * case, errno will be ETIMEDOUT. * @param local_sap (optional) The local address to bind to. If it's * the default value of @c ACE_Addr::sap_any then the * OS will choose an unused port. * @param reuse_addr (optional) If the value is 1, the local address * (@c local_sap) is reused, even if it hasn't been * cleaned up yet. * @param flags Ignored. * @param perms Ignored. * * @return Returns 0 if the connection succeeds. If it fails, * -1 is returned and errno contains a specific error * code. */ int connect (ACE_SOCK_Stream &new_stream, const ACE_Addr &remote_sap, ACE_QoS_Params qos_params, const ACE_Time_Value *timeout = 0, const ACE_Addr &local_sap = ACE_Addr::sap_any, ACE_Protocol_Info *protocolinfo = 0, ACE_SOCK_GROUP g = 0, u_long flags = 0, int reuse_addr = 0, int perms = 0); /// Default destructor. ~ACE_SOCK_Connector (); // = Completion routine. /** * Try to complete a nonblocking connection that was begun by a * previous call to connect with a {0, 0} ACE_Time_Value timeout. * @see connect(). * * @param new_stream The @c ACE_SOCK_Stream object that will be connected * to the peer. * @param remote_sap If non-0, it points to the @c ACE_INET_Addr object * that will contain the address of the connected peer. * @param timeout Same values and return value possibilities as for * connect(). @see connect(). */ int complete (ACE_SOCK_Stream &new_stream, ACE_Addr *remote_sap = 0, const ACE_Time_Value *timeout = 0); /// Resets any event associations on this handle bool reset_new_handle (ACE_HANDLE handle); // = Meta-type info typedef ACE_INET_Addr PEER_ADDR; typedef ACE_SOCK_Stream PEER_STREAM; /// Dump the state of an object. void dump () const; /// Declare the dynamic allocation hooks. ACE_ALLOC_HOOK_DECLARE; protected: /// Perform operations that ensure the socket is opened using /// BSD-style semantics (no QoS). int shared_open (ACE_SOCK_Stream &new_stream, int protocol_family, int protocol, int reuse_addr); /// Perform operations that ensure the socket is opened using /// QoS-enabled semantics. int shared_open (ACE_SOCK_Stream &new_stream, int protocol_family, int protocol, ACE_Protocol_Info *protocolinfo, ACE_SOCK_GROUP g, u_long flags, int reuse_addr); /// Perform operations that must be called before . int shared_connect_start (ACE_SOCK_Stream &new_stream, const ACE_Time_Value *timeout, const ACE_Addr &local_sap); /// Perform operations that must be called after . int shared_connect_finish (ACE_SOCK_Stream &new_stream, const ACE_Time_Value *timeout, int result); }; ACE_END_VERSIONED_NAMESPACE_DECL #if defined (__ACE_INLINE__) #include "ace/SOCK_Connector.inl" #endif /* __ACE_INLINE__ */ #include /**/ "ace/post.h" #endif /* ACE_SOCK_CONNECTOR_H */