Abstract factory for creating a service handler (SVC_HANDLER), accepting into the SVC_HANDLER, and activating the SVC_HANDLER.
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Public Types |
| typedef ACE_PEER_ACCEPTOR_ADDR | addr_type |
| typedef ACE_PEER_ACCEPTOR | acceptor_type |
| typedef SVC_HANDLER | handler_type |
| typedef SVC_HANDLER::stream_type | stream_type |
Public Member Functions |
| | ACE_Acceptor (ACE_Reactor *=0, int use_select=1) |
| | "Do-nothing" constructor.
|
| | ACE_Acceptor (const ACE_PEER_ACCEPTOR_ADDR &local_addr, ACE_Reactor *reactor=ACE_Reactor::instance(), int flags=0, int use_select=1, int reuse_addr=1) |
| virtual int | open (const ACE_PEER_ACCEPTOR_ADDR &local_addr, ACE_Reactor *reactor=ACE_Reactor::instance(), int flags=0, int use_select=1, int reuse_addr=1) |
| virtual | ~ACE_Acceptor (void) |
| | Close down the Acceptor's resources.
|
| virtual | operator ACE_PEER_ACCEPTOR & () const |
| | Return the underlying PEER_ACCEPTOR object.
|
| virtual ACE_PEER_ACCEPTOR & | acceptor (void) const |
| | Return the underlying PEER_ACCEPTOR object.
|
| virtual ACE_HANDLE | get_handle (void) const |
| | Returns the listening acceptor's {ACE_HANDLE}.
|
| virtual int | close (void) |
| | Close down the Acceptor.
|
| virtual int | handle_accept_error (void) |
| void | dump (void) const |
| | Dump the state of an object.
|
| virtual int | suspend (void) |
| | This method calls {Reactor::suspend}.
|
| virtual int | resume (void) |
| | This method calls {Reactor::resume}.
|
Public Attributes |
| | ACE_ALLOC_HOOK_DECLARE |
| | Declare the dynamic allocation hooks.
|
Protected Member Functions |
| virtual int | make_svc_handler (SVC_HANDLER *&sh) |
| virtual int | accept_svc_handler (SVC_HANDLER *svc_handler) |
| virtual int | activate_svc_handler (SVC_HANDLER *svc_handler) |
| virtual int | handle_close (ACE_HANDLE=ACE_INVALID_HANDLE, ACE_Reactor_Mask=ACE_Event_Handler::ALL_EVENTS_MASK) |
| virtual int | handle_input (ACE_HANDLE) |
| virtual int | init (int argc, ACE_TCHAR *argv[]) |
| virtual int | fini (void) |
| | Calls {handle_close}.
|
| virtual int | info (ACE_TCHAR **buf, size_t) const |
| | Default version returns address info in {buf}.
|
Protected Attributes |
| ACE_PEER_ACCEPTOR | peer_acceptor_ |
| | Concrete factory for accepting connections from clients...
|
| ACE_PEER_ACCEPTOR_ADDR | peer_acceptor_addr_ |
| | Needed to reopen the socket if {accept} fails.
|
| int | flags_ |
| int | use_select_ |
| int | reuse_addr_ |
| | Needed to reopen the socket if {accept} fails.
|
template<class SVC_HANDLER, ACE_PEER_ACCEPTOR_1>
class ACE_Acceptor< SVC_HANDLER, ACE_PEER_ACCEPTOR_1 >
Abstract factory for creating a service handler (SVC_HANDLER), accepting into the SVC_HANDLER, and activating the SVC_HANDLER.
Implements the basic strategy for passively establishing connections with clients. An ACE_Acceptor is parameterized by concrete types that conform to the interfaces of PEER_ACCEPTOR and SVC_HANDLER. The PEER_ACCEPTOR is instantiated with a transport mechanism that passively establishes connections. The SVC_HANDLER is instantiated with a concrete type that performs the application-specific service. An ACE_Acceptor inherits from ACE_Service_Object, which in turn inherits from ACE_Event_Handler. This enables the ACE_Reactor to dispatch the ACE_Acceptor's handle_input method when connection events occur. The handle_input method performs the ACE_Acceptor's default creation, connection establishment, and service activation strategies. These strategies can be overridden by subclasses individually or as a group.
template<class SVC_HANDLER, ACE_PEER_ACCEPTOR_1 >
Open the contained PEER_ACCEPTOR object to begin listening, and register with the specified reactor for accept events. An acceptor can only listen to one port at a time, so make sure to close() the acceptor before calling open() again.
The PEER_ACCEPTOR handle is put into non-blocking mode as a safeguard against the race condition that can otherwise occur between the time when the passive-mode socket handle is "ready" and when the actual accept() call is made. During this interval, the client can shutdown the connection, in which case, the accept() call can hang.
- Parameters:
-
| local_addr | The address to listen at. |
| reactor | Pointer to the ACE_Reactor instance to register this object with. The default is the singleton. |
| flags | Flags to control what mode an accepted socket will be put into after it is accepted. The only legal value for this argument is ACE_NONBLOCK, which enables non-blocking mode on the accepted peer stream object in SVC_HANDLER. The default is 0. |
| use_select | Affects behavior when called back by the reactor when a connection can be accepted. If non-zero, this object will accept all pending connections, instead of just the one that triggered the reactor callback. Uses ACE_OS::select() internally to detect any remaining acceptable connections. The default is 1. |
| reuse_addr | Passed to the PEER_ACCEPTOR::open() method with local_addr. Generally used to request that the OS allow reuse of the listen port. The default is 1. |
template<class SVC_HANDLER, ACE_PEER_ACCEPTOR_1 >
Bridge method for creating a SVC_HANDLER. The default is to create a new {SVC_HANDLER} if {sh} == 0, else {sh} is unchanged. However, subclasses can override this policy to perform SVC_HANDLER creation in any way that they like (such as creating subclass instances of SVC_HANDLER, using a singleton, dynamically linking the handler, etc.). Returns -1 on failure, else 0.
Reimplemented in ACE_Strategy_Acceptor< SVC_HANDLER, ACE_PEER_ACCEPTOR_1 >.
template<class SVC_HANDLER, ACE_PEER_ACCEPTOR_1 >
Open the contained PEER_ACCEPTOR object to begin listening, and register with the specified reactor for accept events. An acceptor can only listen to one port at a time, so make sure to close() the acceptor before calling open() again.
The PEER_ACCEPTOR handle is put into non-blocking mode as a safeguard against the race condition that can otherwise occur between the time when the passive-mode socket handle is "ready" and when the actual accept() call is made. During this interval, the client can shutdown the connection, in which case, the accept() call can hang.
- Parameters:
-
| local_addr | The address to listen at. |
| reactor | Pointer to the ACE_Reactor instance to register this object with. The default is the singleton. |
| flags | Flags to control what mode an accepted socket will be put into after it is accepted. The only legal value for this argument is ACE_NONBLOCK, which enables non-blocking mode on the accepted peer stream object in SVC_HANDLER. The default is 0. |
| use_select | Affects behavior when called back by the reactor when a connection can be accepted. If non-zero, this object will accept all pending connections, instead of just the one that triggered the reactor callback. Uses ACE_OS::select() internally to detect any remaining acceptable connections. The default is 1. |
| reuse_addr | Passed to the PEER_ACCEPTOR::open() method with local_addr. Generally used to request that the OS allow reuse of the listen port. The default is 1. |
- Return values:
-
| 0 | Success |
| -1 | Failure, errno contains an error code. |
Reimplemented in ACE_Strategy_Acceptor< SVC_HANDLER, ACE_PEER_ACCEPTOR_1 >.