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#include "GIOP_Message_NonReactive_Handler.h"
#include "GIOP_Message_NonReactive_Base.h"
#include "tao/ORB_Core.h"
#include "tao/CDR.h"
#include "tao/debug.h"
#include "tao/Transport.h"
#if !defined (__ACE_INLINE__)
# include "GIOP_Message_NonReactive_Handler.inl"
#endif /* __ACE_INLINE__ */
ACE_RCSID (tao, GIOP_Message_NonReactive_Handler, "$Id$")
TAO_GIOP_Message_NonReactive_Handler::TAO_GIOP_Message_NonReactive_Handler (TAO_ORB_Core *orb_core,
TAO_GIOP_Message_NonReactive_Base *mesg_base,
size_t cdr_size)
: TAO_GIOP_Message_Reactive_Handler (orb_core,
mesg_base,
cdr_size),
mesg_base_ (mesg_base),
input_cdr_ (orb_core->data_block_for_message_block (cdr_size))
{
}
int
TAO_GIOP_Message_NonReactive_Handler::read_parse_message(TAO_Transport *transport,
ACE_Time_Value *max_wait_time)
{
// Reset the input_cdr before we do anything with it
this->input_cdr_.reset_contents ();
// Before we do this let us reset the
char *buf = this->input_cdr_.rd_ptr ();
// This is of the following pieces:
// - We first read the GIOP header and parse the information. We
// also get the size of the incoming message. We grow the size of
// the CDR if needed
// - We read the information/message in toto.
if (this->read_message (transport,
buf,
TAO_GIOP_MESSAGE_HEADER_LEN,
max_wait_time) == -1)
{
if (TAO_debug_level > 1)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) : (%N | %l) \n")
ACE_TEXT ("Error during header read \n")));
return -1;
}
// Parse the message header
if (this->parse_message_header_i (buf) == -1)
{
if (TAO_debug_level > 2)
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) : (%N|%l)\n")
ACE_TEXT ("Error while parsing GIOP header \n")));
}
return -1;
}
// Reset the byte order now
this->input_cdr_.reset_byte_order (this->message_state_.byte_order);
// Calculate the message size to grow the CDR
size_t msg_size =
this->message_state_.message_size +
TAO_GIOP_MESSAGE_HEADER_LEN;
// With GIOP 1.2 we should get a fragment header
if (this->message_state_.more_fragments &&
this->message_state_.giop_version.minor == 2)
{
msg_size += TAO_GIOP_MESSAGE_FRAGMENT_HEADER;
}
// Grow the CDR
if (this->input_cdr_.grow (msg_size) == -1)
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) Failure to grow the CDR buffers \n")
ACE_TEXT ("(%P|%t) to the right size")));
return -1;
}
// Growing the CDR would have reset our read pointer, so set it back
// to the right position
if (this->input_cdr_.skip_bytes (TAO_GIOP_MESSAGE_HEADER_LEN) == 0)
{
if (TAO_debug_level> 3)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) Failure to skip the right bytes \n")
ACE_TEXT ("(%P|%t) in the CDR stream")));
return -1;
}
buf = this->input_cdr_.rd_ptr ();
// Read the rest of the message
if (this->read_message (transport,
buf,
msg_size - TAO_GIOP_MESSAGE_HEADER_LEN,
max_wait_time) == -1)
{
if (TAO_debug_level > 1)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) : (%N | %l) \n")
ACE_TEXT ("Error during message read \n")));
return -1;
}
// Parse the GIOP fragment header.
if (this->parse_fragment_header (this->input_cdr_.rd_ptr (),
this->input_cdr_.length ()))
{
// We had a GIOP fragment header, so skip few more bytes.
if (this->input_cdr_.skip_bytes (TAO_GIOP_MESSAGE_FRAGMENT_HEADER) == 0)
{
if (TAO_debug_level> 3)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) Failure to skip the right bytes \n")
ACE_TEXT ("(%P|%t) in the CDR stream [2]")));
return -1;
}
}
// Now we have parsed almost every thing that is part of the GIOP
// header. Return a succes value
return 0;
}
int
TAO_GIOP_Message_NonReactive_Handler::read_message (TAO_Transport *transport,
char *buf,
size_t size,
ACE_Time_Value *max_wait_time)
{
ssize_t bytes = 0;
// As this used for transports where things are available in one
// shot this looping should not create any problems.
for (size_t n = size;
n != 0;
n -= bytes)
{
// We would have liked to use something like a recv_n ()
// here. But at the time when the code was written, the MEM_Stream
// classes had poor support for recv_n (). Till a day when we
// get proper recv_n (), let us stick with this. The other
// argument that can be said against this is that, this is the
// bad layer in which this is being done ie. recv_n is
// simulated. But...
bytes = transport->recv (buf,
n,
max_wait_time);
// @@ Do we need to check for errno != EWOULDBLOCK?? and errno ==
// @@ ECONNRESET. Does such things make sense here??
if (bytes == 0 ||
bytes == -1)
return bytes;
buf += bytes;
}
return 1;
}
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