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// -*- C++ -*-
//=============================================================================
/**
* @file SOCK_Dgram.h
*
* $Id$
*
* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACE_SOCK_DGRAM_H
#define ACE_SOCK_DGRAM_H
#include /**/ "ace/pre.h"
#include "ace/SOCK.h"
#include "ace/INET_Addr.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/Addr.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
class ACE_Time_Value;
/**
* @class ACE_SOCK_Dgram
*
* @brief Defines the member functions for the ACE_SOCK datagram
* abstraction.
*/
class ACE_Export ACE_SOCK_Dgram : public ACE_SOCK
{
public:
// = Initialization and termination methods.
/// Default constructor.
ACE_SOCK_Dgram (void);
/// This is a BSD-style method (i.e., no QoS) for initiating a socket
/// dgram that will accept datagrams at the <local> address.
ACE_SOCK_Dgram (const ACE_Addr &local,
int protocol_family = ACE_PROTOCOL_FAMILY_INET,
int protocol = 0,
int reuse_addr = 0);
/**
* This is a QoS-enabed method for initiating a socket dgram that
* will accept datagrams at the <local> address. The @a qos_params
* are passed to <ACE_OS::join_leaf>.
*/
ACE_SOCK_Dgram (const ACE_Addr &local,
int protocol_family,
int protocol,
ACE_Protocol_Info *protocolinfo,
ACE_SOCK_GROUP g = 0,
u_long flags = 0,
int reuse_addr = 0);
/// This is a BSD-style method (i.e., no QoS) for initiating a socket
/// dgram that will accept datagrams at the <local> address.
int open (const ACE_Addr &local,
int protocol_family = ACE_PROTOCOL_FAMILY_INET,
int protocol = 0,
int reuse_addr = 0);
/**
* This is a QoS-enabed method for initiating a socket dgram that
* will accept datagrams at the <local> address. The @a qos_params
* are passed to <ACE_OS::join_leaf>.
*/
int open (const ACE_Addr &local,
int protocol_family,
int protocol,
ACE_Protocol_Info *protocolinfo,
ACE_SOCK_GROUP g = 0,
u_long flags = 0,
int reuse_addr = 0);
/// Default dtor.
~ACE_SOCK_Dgram (void);
// = Data transfer routines.
/// Send an @a n byte @a buf to the datagram socket (uses <sendto(3)>).
ssize_t send (const void *buf,
size_t n,
const ACE_Addr &addr,
int flags = 0) const;
/// Receive an @a n byte @a buf from the datagram socket (uses
/// <recvfrom(3)>).
ssize_t recv (void *buf,
size_t n,
ACE_Addr &addr,
int flags = 0) const;
/**
* Allows a client to read from a socket without having to provide a
* buffer to read. This method determines how much data is in the
* socket, allocates a buffer of this size, reads in the data, and
* returns the number of bytes read. The caller is responsible for
* deleting the member in the <iov_base> field of <io_vec> using the
* ``delete []'' syntax.
*/
ssize_t recv (iovec *io_vec,
ACE_Addr &addr,
int flags = 0,
const ACE_Time_Value *timeout = 0) const;
/// Send an <iovec> of size @a n to the datagram socket (uses
/// <sendmsg(3)>).
ssize_t send (const iovec iov[],
int n,
const ACE_Addr &addr,
int flags = 0) const;
/// Recv an <iovec> of size @a n to the datagram socket (uses
/// <recvmsg(3)>).
ssize_t recv (iovec iov[],
int n,
ACE_Addr &addr,
int flags = 0) const;
/**
* Wait up to @a timeout amount of time to receive a datagram into
* @a buf. The ACE_Time_Value indicates how long to blocking
* trying to receive. If @a timeout == 0, the caller will block
* until action is possible, else will wait until the relative time
* specified in *@a timeout elapses). If <recv> times out a -1 is
* returned with @c errno == ETIME. If it succeeds the number of
* bytes received is returned.
*/
ssize_t recv (void *buf,
size_t n,
ACE_Addr &addr,
int flags,
const ACE_Time_Value *timeout) const;
/**
* Wait up to @a timeout amount of time to send a datagram to
* @a buf. The ACE_Time_Value indicates how long to blocking
* trying to receive. If @a timeout == 0, the caller will block
* until action is possible, else will wait until the relative time
* specified in *@a timeout elapses). If <send> times out a -1 is
* returned with @c errno == ETIME. If it succeeds the number of
* bytes sent is returned.
*/
ssize_t send (const void *buf,
size_t n,
const ACE_Addr &addr,
int flags,
const ACE_Time_Value *timeout) const;
/// Send <buffer_count> worth of @a buffers to @a addr using overlapped
/// I/O (uses <WSASendTo>). Returns 0 on success.
ssize_t send (const iovec buffers[],
int buffer_count,
size_t &number_of_bytes_sent,
int flags,
const ACE_Addr &addr,
ACE_OVERLAPPED *overlapped,
ACE_OVERLAPPED_COMPLETION_FUNC func) const;
/// Recv <buffer_count> worth of @a buffers from @a addr using
/// overlapped I/O (uses <WSARecvFrom>). Returns 0 on success.
ssize_t recv (iovec buffers[],
int buffer_count,
size_t &number_of_bytes_recvd,
int &flags,
ACE_Addr &addr,
ACE_OVERLAPPED *overlapped,
ACE_OVERLAPPED_COMPLETION_FUNC func) const;
/// Send an @a n byte @a buf to the datagram socket (uses <WSASendTo>).
ssize_t send (const void *buf,
size_t n,
const ACE_Addr &addr,
int flags,
ACE_OVERLAPPED *overlapped,
ACE_OVERLAPPED_COMPLETION_FUNC func) const;
/// Receive an @a n byte @a buf from the datagram socket (uses
/// <WSARecvFrom>).
ssize_t recv (void *buf,
size_t n,
ACE_Addr &addr,
int flags,
ACE_OVERLAPPED *overlapped,
ACE_OVERLAPPED_COMPLETION_FUNC func) const;
// = Meta-type info.
typedef ACE_INET_Addr PEER_ADDR;
/// Dump the state of an object.
void dump (void) const;
/// Set NIC to use as multicast interface.
int set_nic (const ACE_TCHAR *net_if,
int addr_family = AF_UNSPEC);
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
protected:
/// Open is shared by this and by <LSOCK_Dgram>.
int shared_open (const ACE_Addr &local,
int protocol_family);
/// Create a multicast addr/if pair, in format useful for system calls.
/// If mreq param is NULL, just verify the passed addr/interface specs.
int make_multicast_ifaddr (ip_mreq *mreq, // Put result here, if != NULL.
const ACE_INET_Addr &mcast_addr,
const ACE_TCHAR *net_if);
#if defined (ACE_HAS_IPV6)
/// Create a multicast addr/if pair, in format useful for system calls.
/// If mreq param is NULL, just verify the passed addr/interface specs.
int make_multicast_ifaddr6 (ipv6_mreq *mreq, // Put result here, if != NULL.
const ACE_INET_Addr &mcast_addr,
const ACE_TCHAR *net_if);
#endif /* ACE_HAS_IPV6 */
private:
/// Do not allow this function to percolate up to this interface...
int get_remote_addr (ACE_Addr &) const;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/SOCK_Dgram.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* ACE_SOCK_DGRAM_H */
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