80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/mtproto/HttpTransport.h"
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#include "td/net/HttpHeaderCreator.h"
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#include "td/utils/buffer.h"
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#include "td/utils/logging.h"
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#include "td/utils/Slice.h"
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#include "td/utils/Status.h"
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// TODO: do I need \r\n as delimiter?
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#include <cstring>
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namespace td {
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namespace mtproto {
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namespace http {
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Result<size_t> Transport::read_next(BufferSlice *message, uint32 *quick_ack) {
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CHECK(can_read());
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auto r_size = reader_.read_next(&http_query_);
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if (r_size.is_error() || r_size.ok() != 0) {
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return r_size;
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}
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if (http_query_.type_ != HttpQuery::Type::RESPONSE) {
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return Status::Error("Unexpected http query type");
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}
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if (http_query_.container_.size() != 2u) {
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return Status::Error("Wrong response");
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}
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*message = std::move(http_query_.container_[1]);
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turn_ = Write;
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return 0;
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}
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void Transport::write(BufferWriter &&message, bool quick_ack) {
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CHECK(can_write());
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CHECK(!quick_ack);
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/*
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* POST /api HTTP/1.1
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* Content-Length: [message->size()]
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* Host: url
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*/
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HttpHeaderCreator hc;
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hc.init_post("/api");
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hc.add_header("Host", "");
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hc.set_keep_alive();
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hc.set_content_size(message.size());
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auto r_head = hc.finish();
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CHECK(r_head.is_ok());
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Slice src = r_head.ok();
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MutableSlice dst = message.prepare_prepend();
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CHECK(dst.size() >= src.size()) << dst.size() << " >= " << src.size();
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std::memcpy(dst.end() - src.size(), src.begin(), src.size());
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message.confirm_prepend(src.size());
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output_->append(message.as_buffer_slice());
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turn_ = Read;
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}
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bool Transport::can_read() const {
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return turn_ == Read;
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}
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bool Transport::can_write() const {
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return turn_ == Write;
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}
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size_t Transport::max_prepend_size() const {
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return MAX_PREPEND_SIZE;
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}
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} // namespace http
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} // namespace mtproto
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} // namespace td
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