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asio_server_request_handler.cc
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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2015 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "asio_server_request_handler.h"
#include "asio_server_request.h"
#include "asio_server_response.h"
#include "util.h"
#include "http2.h"
namespace nghttp2 {
namespace asio_http2 {
namespace server {
namespace {
std::string create_html(int status_code) {
BlockAllocator balloc(1024, 1024);
std::string res;
res.reserve(512);
auto status_string = ::nghttp2::http2::stringify_status(balloc, status_code);
auto reason_phrase = ::nghttp2::http2::get_reason_phrase(status_code);
res += R"(<!DOCTYPE html><html lang="en"><title>)";
res += status_string;
res += ' ';
res += reason_phrase;
res += "</title><body><h1>";
res += status_string;
res += ' ';
res += reason_phrase;
res += "</h1></body></html>";
return res;
}
} // namespace
request_cb redirect_handler(int status_code, std::string uri) {
return [status_code, uri](const asio_server_request& req, asio_server_response& res, uint64_t handler_id, int32_t stream_id) {
header_map h;
h.emplace("location", header_value{std::move(uri)});
std::string html;
if (req.method() == "GET") {
html = create_html(status_code);
}
h.emplace("content-length", header_value{util::utos(html.size())});
res.write_head(status_code, std::move(h));
res.end(std::move(html));
};
}
request_cb status_handler(int status_code) {
return [status_code](const asio_server_request& req, asio_server_response& res, uint64_t handler_id, int32_t stream_id) {
if (!::nghttp2::http2::expect_response_body(status_code)) {
res.write_head(status_code);
res.end();
return;
}
// we supply content-length for HEAD request, but body will not be
// sent.
auto html = create_html(status_code);
header_map h;
h.emplace("content-length", header_value{util::utos(html.size())});
h.emplace("content-type", header_value{"text/html; charset=utf-8"});
res.write_head(status_code, std::move(h));
res.end(std::move(html));
};
}
} // namespace server
} // namespace asio_http2
} // namespace nghttp2