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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <hicn/transport/interfaces/socket_consumer.h>
#include <implementation/socket_consumer.h>
#include <protocols/rtc/rtc_reassembly.h>
#include <protocols/transport_protocol.h>
namespace transport {
namespace protocol {
namespace rtc {
RtcReassembly::RtcReassembly(implementation::ConsumerSocket* icn_socket,
TransportProtocol* transport_protocol)
: DatagramReassembly(icn_socket, transport_protocol) {
is_setup_ = false;
}
void RtcReassembly::reassemble(core::ContentObject& content_object) {
if (!is_setup_) {
is_setup_ = true;
reassembly_consumer_socket_->getSocketOption(
interface::RtcTransportOptions::AGGREGATED_DATA, data_aggregation_);
}
auto read_buffer = content_object.getPayload();
DLOG_IF(INFO, VLOG_IS_ON(3)) << "Size of payload: " << read_buffer->length();
read_buffer->trimStart(transport_protocol_->transportHeaderLength());
if (data_aggregation_) {
rtc::AggrPktHeader hdr((uint8_t*)read_buffer->data());
for (uint8_t i = 0; i < hdr.getNumberOfPackets(); i++) {
std::unique_ptr<utils::MemBuf> segment = read_buffer->clone();
uint16_t pkt_start = 0;
uint16_t pkt_len = 0;
int res = hdr.getPacketOffsets(i, &pkt_start, &pkt_len);
if (res == -1) {
// this should not happen
break;
}
segment->trimStart(pkt_start);
segment->trimEnd(segment->length() - pkt_len);
Reassembly::read_buffer_ = std::move(segment);
Reassembly::notifyApplication();
}
} else {
Reassembly::read_buffer_ = std::move(read_buffer);
Reassembly::notifyApplication();
}
}
void RtcReassembly::reassemble(utils::MemBuf& buffer, uint32_t suffix) {
if (!is_setup_) {
is_setup_ = true;
reassembly_consumer_socket_->getSocketOption(
interface::RtcTransportOptions::AGGREGATED_DATA, data_aggregation_);
}
if (data_aggregation_) {
rtc::AggrPktHeader hdr((uint8_t*)buffer.data());
for (uint8_t i = 0; i < hdr.getNumberOfPackets(); i++) {
std::unique_ptr<utils::MemBuf> segment = buffer.clone();
uint16_t pkt_start = 0;
uint16_t pkt_len = 0;
int res = hdr.getPacketOffsets(i, &pkt_start, &pkt_len);
if (res == -1) {
// this should not happen
break;
}
segment->trimStart(pkt_start);
segment->trimEnd(segment->length() - pkt_len);
Reassembly::read_buffer_ = std::move(segment);
Reassembly::notifyApplication();
}
} else {
Reassembly::read_buffer_ = buffer.cloneOne();
Reassembly::notifyApplication();
}
}
} // namespace rtc
} // namespace protocol
} // namespace transport
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