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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
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