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/* -*- C++ -*- */
// $Id: Asynch_Acceptor.h,v
// ============================================================================
//
// = LIBRARY
// ace
//
// = FILENAME
// Asynch_Acceptor.h
//
// = AUTHOR
// Irfan Pyarali (irfan@cs.wustl.edu)
//
// ============================================================================
#if !defined (ACE_ASYNCH_ACCEPTOR_H)
#define ACE_ASYNCH_ACCEPTOR_H
#include "ace/OS.h"
#if defined (ACE_WIN32)
// This only works on Win32 platforms
#include "ace/Asynch_IO.h"
// Forward declarations
class ACE_Message_Block;
class ACE_INET_Addr;
template <class HANDLER>
class ACE_Asynch_Acceptor : public ACE_Handler
//
// = TITLE
//
// This class is an example of the Acceptor Pattern. This class
// will accept new connections and create new HANDLER to handle
// the new connections.
//
// = DESCRIPTION
//
{
public:
ACE_Asynch_Acceptor (void);
// A do nothing constructor.
~ACE_Asynch_Acceptor (void);
// Virtual destruction
int open (const ACE_INET_Addr &address,
size_t bytes_to_read = 0,
int pass_addresses = 0,
int backlog = 5,
int reuse_addr = 1);
// This starts the listening process at the port specified by
// <address>. ACE_Asynch_Acceptor initiates the AcceptEx calls with
// <bytes_to_read>. The buffer for the initial data will be created
// by ACE_Asynch_Acceptor. This buffer will be passed to the
// handler in the <ACE_Service_Handler::open> callback. If this
// buffer is required past the <open> callback, the
// ACE_Service_Handler must copy the data. If the <pass_addresses>
// flag is set, ACE_Asynch_Acceptor will call
// <ACE_Service_Handler::addresses> before calling
// <ACE_Service_Handler::open>. The <backlog> parameter specifies
// the listen backlog and the outstanding AcceptEx calls.
int accept (size_t bytes_to_read = 0);
// This initiates a new asynchronous accept through the AcceptEx call.
static size_t address_size (void);
// This is required by the AcceptEx call.
int cancel (void);
// This cancels all pending accepts operations that were issued by
// the calling thread. The function does not cancel accept
// operations issued by other threads.
protected:
virtual void handle_accept (const ACE_Asynch_Accept::Result &result);
// This is called when an outstanding accept completes.
ACE_HANDLE handle (void) const;
// Return the listen handle.
void parse_address (ACE_Message_Block &message_block,
ACE_INET_Addr &remote_address,
ACE_INET_Addr &local_address);
// This parses the address from read buffer.
virtual HANDLER *make_handler (void);
// This is the template method used to create new handler.
// Subclasses must overwrite this method if a new handler creation
// strategy is required.
private:
ACE_HANDLE listen_handle_;
// Handle used to listen for new connections.
ACE_Asynch_Accept asynch_accept_;
// Asynch_Accept used to make life easier :-)
int pass_addresses_;
// Flag that indicates if parsing of addresses is necessary.
int bytes_to_read_;
// Bytes to be read with the accept call.
};
#if defined (__ACE_INLINE__)
#include "ace/Asynch_Acceptor.i"
#endif /* __ACE_INLINE__ */
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "ace/Asynch_Acceptor.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#if defined (ACE_TEMPLATES_REQUIRE_PRAGMA)
#pragma implementation ("Asynch_Acceptor.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */
#endif /* ACE_WIN32 */
#endif /* ACE_ASYNCH_ACCEPTOR_H */
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