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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
// Original author: ekr@rtfm.com
#include "logging.h"
#include "nspr.h"
#include "prlock.h"
#include "nsNetCID.h"
#include "nsIComponentManager.h"
#include "nsComponentManagerUtils.h"
#include "nsIComponentRegistrar.h"
#include "nsIEventTarget.h"
#include "nsIIOService.h"
#include "nsIServiceManager.h"
#include "nsISocketTransportService.h"
#include "nsServiceManagerUtils.h"
#include "transportflow.h"
#include "transportlayerloopback.h"
namespace mozilla {
MOZ_MTLOG_MODULE("mtransport")
nsresult TransportLayerLoopback::Init() {
timer_ = do_CreateInstance(NS_TIMER_CONTRACTID);
MOZ_ASSERT(timer_);
if (!timer_)
return NS_ERROR_FAILURE;
nsresult rv;
target_ = do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
MOZ_ASSERT(NS_SUCCEEDED(rv));
if (!NS_SUCCEEDED(rv))
return rv;
timer_->SetTarget(target_);
packets_lock_ = PR_NewLock();
MOZ_ASSERT(packets_lock_);
if (!packets_lock_)
return NS_ERROR_FAILURE;
deliverer_ = new Deliverer(this);
timer_->InitWithCallback(deliverer_, 100, nsITimer::TYPE_REPEATING_SLACK);
return NS_OK;
}
// Connect to the other side
void TransportLayerLoopback::Connect(TransportLayerLoopback* peer) {
peer_ = peer;
TL_SET_STATE(TS_OPEN);
}
TransportResult
TransportLayerLoopback::SendPacket(const unsigned char *data, size_t len) {
MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "SendPacket(" << len << ")");
if (!peer_) {
MOZ_MTLOG(ML_ERROR, "Discarding packet because peer not attached");
return TE_ERROR;
}
nsresult res = peer_->QueuePacket(data, len);
if (!NS_SUCCEEDED(res))
return TE_ERROR;
return static_cast<TransportResult>(len);
}
nsresult TransportLayerLoopback::QueuePacket(const unsigned char *data,
size_t len) {
MOZ_ASSERT(packets_lock_);
PR_Lock(packets_lock_);
if (combinePackets_ && !packets_.empty()) {
QueuedPacket *packet = packets_.front();
packets_.pop();
MOZ_MTLOG(ML_DEBUG, LAYER_INFO << " Enqueuing combined packets of length " << packet->len() << " and " << len);
packets_.push(new QueuedPacket());
packets_.back()->Assign(packet->data(), packet->len(),
data, len);
} else {
MOZ_MTLOG(ML_DEBUG, LAYER_INFO << " Enqueuing packet of length " << len);
packets_.push(new QueuedPacket());
packets_.back()->Assign(data, len);
}
PRStatus r = PR_Unlock(packets_lock_);
MOZ_ASSERT(r == PR_SUCCESS);
if (r != PR_SUCCESS)
return NS_ERROR_FAILURE;
return NS_OK;
}
void TransportLayerLoopback::DeliverPackets() {
while (!packets_.empty()) {
QueuedPacket *packet = packets_.front();
packets_.pop();
MOZ_MTLOG(ML_DEBUG, LAYER_INFO << " Delivering packet of length " <<
packet->len());
SignalPacketReceived(this, packet->data(), packet->len());
delete packet;
}
}
NS_IMPL_ISUPPORTS(TransportLayerLoopback::Deliverer, nsITimerCallback)
NS_IMETHODIMP TransportLayerLoopback::Deliverer::Notify(nsITimer *timer) {
if (!layer_)
return NS_OK;
layer_->DeliverPackets();
return NS_OK;
}
} // close namespace
|
