1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
// -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// GIOP_Message_Base.h
//
// = DESCRIPTION
// Interface for the GIOP messaging protocol
//
// = AUTHOR
// Copyright 1994-1995 by Sun Microsystems Inc.,
// Balachandran Natarajan <bala@cs.wustl.edu>
//
// ============================================================================
#ifndef _TAO_GIOP_MESSAGE_H_
#define _TAO_GIOP_MESSAGE_H_
#include "tao/Pluggable_Messaging.h"
#include "tao/GIOP_Utils.h"
class TAO_Export TAO_GIOP_Message_Base :
public TAO_Pluggable_Messaging_Interface
{
// = TITLE
// Definitions of GIOP specific stuff
//
// = DESCRIPTION
// This class will hold the specific details common to all the
// GIOP versions. Some of them which are here may be shifted if
// things start changing between versions
public:
TAO_GIOP_Message_Base (void);
virtual ~TAO_GIOP_Message_Base (void);
// Dtor
virtual CORBA::Boolean write_protocol_header (TAO_Pluggable_Message_Type t,
TAO_OutputCDR &msg);
// Writes the GIOP header in to <msg>
int handle_input (TAO_Transport *transport,
TAO_ORB_Core *orb_core,
TAO_Message_State_Factory &mesg_state,
ACE_Time_Value *max_time_value = 0);
// Reads input from the transport
virtual CORBA::Boolean
write_message_header (const TAO_Operation_Details &opdetails,
TAO_Pluggable_Header_Type header_type,
TAO_Target_Specification &spec,
TAO_OutputCDR &msg);
// Write the header defined by <header_type> in to <msg>
int send_message (TAO_Transport *transport,
TAO_OutputCDR &stream,
ACE_Time_Value *max_wait_time = 0,
TAO_Stub *stub = 0,
int two_way = 1);
// Sends the encapsulated stream in <stream> on to the transport
virtual int parse_reply (TAO_Message_State_Factory &mesg_state,
TAO_Pluggable_Connector_Params ¶ms,
CORBA::ULong &reply_status) = 0;
// Parse the reply message from the server
int process_connector_messages (TAO_Transport *transport,
TAO_ORB_Core *orb_core,
TAO_InputCDR &input,
CORBA::Octet message_type) = 0;
// Processes the messages from the connectors so that they can be
// passed on to the appropriate states.
protected:
const size_t header_len (void);
// This will give the size of the header for different versions of
// GIOP.
const size_t message_size_offset (void);
// This will give the message_size offset as specified by different
// versions of GIOP
const size_t major_version_offset (void);
// This will give the major_version offset as specified by different
// versions of GIOP
const size_t minor_version_offset (void);
// This will give the minor_version offset as specified by different
// versions of GIOP
const size_t flags_offset (void);
// This will give the flags offset as specified by different
// versions of GIOP
const size_t message_type_offset (void);
// This will give the message type offset as specified by different
// versions of GIOP
// @@The above methods may not be required. But we have it for a
// later date use wherein things can changes in GIOP
int send_error (TAO_Transport *transport);
// Send error messages
void dump_msg (const char *label,
const u_char *ptr,
size_t len);
// Print out a debug messages..
private:
virtual CORBA::Octet major_version (void) = 0;
virtual CORBA::Octet minor_version (void) = 0;
// These virtual methods need will give the major and minor versions
// of the GIOP classes that are active.
virtual CORBA::Boolean
write_request_header (const TAO_Operation_Details &opdetails,
TAO_Target_Specification &spec,
TAO_OutputCDR &msg) = 0;
// Write the GIOP request header in to <msg>
virtual CORBA::Boolean
write_locate_request_header (CORBA::ULong request_id,
TAO_Target_Specification &spec,
TAO_OutputCDR &msg) = 0;
// Write the GIOP locate request header in to <msg>
virtual int validate_version (TAO_GIOP_Message_State *state) = 0;
// This will do a validation of the versions that arrive in the transport.
virtual int parse_header (TAO_GIOP_Message_State *state);
// Parses the header of the GIOP messages for validity
virtual int parse_magic_bytes (TAO_GIOP_Message_State *state);
// validates the first 4 bytes that contain the magic word "GIOP"
void send_close_connection (const TAO_GIOP_Version &version,
TAO_Transport *transport,
void *ctx);
// Close a connection, first sending GIOP::CloseConnection.
};
const size_t TAO_GIOP_HEADER_LEN = 12;
const size_t TAO_GIOP_MESSAGE_SIZE_OFFSET = 8;
const size_t TAO_GIOP_VERSION_MINOR_OFFSET = 5;
const size_t TAO_GIOP_VERSION_MAJOR_OFFSET = 4;
const size_t TAO_GIOP_MESSAGE_FLAGS_OFFSET = 6;
const size_t TAO_GIOP_MESSAGE_TYPE_OFFSET = 7;
#if defined (__ACE_INLINE__)
# include "tao/GIOP_Message_Base.i"
#endif /* __ACE_INLINE__ */
#endif /*_TAO_GIOP_MESSAGE_H_*/
|
