File session.cc
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#include <boost/asio/use_awaitable.hpp>
#include <boost/beast.hpp>
#include <boost/beast/core/buffers_to_string.hpp>
#include <boost/beast/core/stream_traits.hpp>
#include <boost/beast/http/message.hpp>
#include <boost/beast/ssl.hpp>
#include <boost/url.hpp>
#include <memory>
#include <mutex>
#include <qqmusic/result.h>
#include <qqmusic/utils/cookie.h>
#include <qqmusic/utils/session.h>
#include <utility>
static qqmusic::Task<qqmusic::Result<qqmusic::utils::HttpResponse>> handle_http_redirecting(
qqmusic::utils::Session& self,
boost::url_view url,
boost::beast::http::request<boost::beast::http::string_body>& req,
qqmusic::utils::HttpResponse& resp);
static qqmusic::Task<qqmusic::Result<qqmusic::utils::HttpResponse>> handle_https_redirecting(
qqmusic::utils::Session& self,
boost::url_view url,
boost::beast::http::request<boost::beast::http::string_body>& req,
qqmusic::utils::HttpResponse& resp,
std::shared_ptr<boost::asio::ssl::context> ssl_ctx);
namespace qqmusic::utils {
SessionManager::SessionManager()
: ctx(qqmusic::details::NetworkContext())
, ioc(std::make_shared<asio::io_context>())
, ssl_ctx(std::make_shared<asio::ssl::context>(asio::ssl::context::tlsv12_client)) {
ssl_ctx->set_default_verify_paths();
}
SessionManager& SessionManager::get_instance() {
static std::unique_ptr<SessionManager> instance;
static std::once_flag flag;
std::call_once(flag, []() { instance.reset(new SessionManager()); });
return *instance;
}
Session SessionManager::get_session() {
return {ctx, ioc, ssl_ctx, lock};
}
void SessionManager::set_context(const qqmusic::details::NetworkContext& context) {
std::lock_guard<std::mutex> lg(lock);
ctx = context;
}
void SessionManager::push_context(qqmusic::details::NetworkContext&& context) {
std::lock_guard<std::mutex> lg(lock);
context_stack.push(std::move(ctx));
ctx = std::move(context);
}
void SessionManager::pop_context() {
std::lock_guard<std::mutex> lg(lock);
ctx = std::move(context_stack.top());
context_stack.pop();
}
qqmusic::details::NetworkContext& Session::get_context_ref() {
return local_ctx;
}
void Session::sync_global() {
std::lock_guard<std::mutex> lg(lock);
global_ctx = local_ctx;
}
void Session::update_local() {
std::lock_guard<std::mutex> lg(lock);
local_ctx = global_ctx;
}
qqmusic::Task<qqmusic::Result<HttpResponse>> Session::perform_request(
boost::url_view url, http::request<http::string_body>& req, bool auto_redirecting) {
namespace beast = boost::beast;
namespace asio = boost::asio;
if (url.scheme() == "http") {
/*handle http requests*/
auto res = co_await handle_http_request(url, req, auto_redirecting);
if (res.isOk()) {
co_return Ok(res.unwrap());
} else {
co_return Err(res.unwrapErr());
}
} else if (url.scheme() == "https") {
/*handle https requests*/
auto res = co_await handle_https_request(url, req, auto_redirecting);
if (res.isOk()) {
co_return Ok(res.unwrap());
} else {
co_return Err(res.unwrapErr());
}
} else {
co_return Err(
Exception(Exception::NetworkError,
std::format("[Session::perform_request] -- Invalid url scheme: `{}`",
std::string(url.scheme()))));
}
}
qqmusic::Task<qqmusic::Result<HttpResponse>> Session::handle_http_request(
boost::url_view url, http::request<http::string_body>& req, bool auto_redirecting) {
namespace beast = boost::beast;
namespace asio = boost::asio;
beast::tcp_stream tcps{asio::use_awaitable_t<asio::any_io_executor>::as_default_on(
beast::tcp_stream(co_await asio::this_coro::executor))};
auto resolver = asio::use_awaitable_t<asio::any_io_executor>::as_default_on(
asio::ip::tcp::resolver(co_await asio::this_coro::executor));
auto resolv_res = co_await resolver.async_resolve(url.host(), "http");
beast::get_lowest_layer(tcps).expires_after(local_ctx.timeout);
try {
/*Connect to endpoint*/
co_await boost::beast::get_lowest_layer(tcps).async_connect(resolv_res);
} catch (const boost::system::system_error& e) {
if (e.code() == boost::asio::error::timed_out) {
co_return qqmusic::utils::Exception(
qqmusic::utils::Exception::OperationOutOfTime,
std::format("[perform_request] -- connecting to host `{}` out of time", url.host()));
}
co_return Err(qqmusic::utils::Exception(
qqmusic::utils::Exception::NetworkError,
std::format("[perform_request] -- connecting to host `{}` failed, reason: `{}`",
url.host(),
e.what())));
}
req.prepare_payload();
try {
/*Send the request*/
co_await beast::http::async_write(tcps, req);
} catch (const boost::system::system_error& e) {
if (e.code() == boost::asio::error::timed_out) {
co_return qqmusic::utils::Exception(
qqmusic::utils::Exception::OperationOutOfTime,
std::format("[perform_request] -- connecting to host `{}` out of time", url.host()));
}
co_return Err(qqmusic::utils::Exception(
qqmusic::utils::Exception::NetworkError,
std::format("[perform_request] -- connecting to host `{}` failed, reason: `{}`",
url.host(),
e.what())));
}
http::response<http::dynamic_body> res;
boost::beast::flat_buffer buffer;
try {
/*Receive HTTP response*/
co_await http::async_read(tcps, buffer, res);
} catch (const boost::system::system_error& e) {
if (e.code() == boost::asio::error::timed_out) {
co_return Err(qqmusic::utils::Exception(qqmusic::utils::Exception::OperationOutOfTime,
"Read operation timed out"));
}
co_return Err(
qqmusic::utils::Exception(qqmusic::utils::Exception::NetworkError,
std::format("[perform_request] -- Read operation error: `{}`",
e.what())));
}
/*Shutdown the connection*/
boost::system::error_code ec = tcps.socket()
.shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
if (!ec || ec == asio::error::eof || ec == boost::beast::error::timeout) {
/*here we got the request performed successfully*/
if (res.base().find(http::field::set_cookie) != res.base().end()) {
/*set cookie*/
CookieJar cookie_new;
std::ostringstream oss;
for (auto& field : res.base()) {
if (field.name() == http::field::set_cookie) {
auto cookie_res = parse_cookie(field.value());
if (cookie_res.isErr()) {
co_return Err(Exception(
Exception::JsonError,
std::format("[Session::perform_request] -- Cookie parse error: `{}`",
cookie_res.unwrapErr().what())));
}
auto cookie_dict = cookie_res.unwrap();
std::string domain, path = "/";
if (cookie_dict.contains("Domain")) {
domain = cookie_dict["Domain"].get<std::string>();
cookie_dict.erase("Domain");
}
if (cookie_dict.contains("Path")) {
path = cookie_dict["Path"].get<std::string>();
cookie_dict.erase("Path");
}
for (auto& i : cookie_dict.items()) {
cookie_new.set({
.domain = domain,
.path = path,
.key = i.key(),
.value = i.value().get<std::string>(),
});
}
}
}
local_ctx.cookies.merge(cookie_new);
/*write the change back to global context*/
sync_global();
}
if (auto_redirecting
&& (res.result() == http::status::found
|| res.result() == http::status::moved_permanently
|| res.result() == http::status::permanent_redirect)) {
/*handle redirecting*/
auto final_res = co_await handle_http_redirecting(*this, url, req, res);
if (final_res.isErr()) {
co_return Err(Exception(final_res.unwrapErr()));
}
co_return Ok(final_res.unwrap());
}
co_return Ok(res);
}
co_return Err(
qqmusic::utils::Exception(qqmusic::utils::Exception::UnknownError,
std::format("[perform_request] -- Unknown error ocurred: `{}`",
ec.message())));
}
qqmusic::Task<qqmusic::Result<HttpResponse>> Session::handle_https_request(
boost::url_view url, http::request<http::string_body>& req, bool auto_redirecting) {
using executor_with_default
= asio::use_awaitable_t<>::executor_with_default<asio::any_io_executor>;
using tcp_stream =
typename boost::beast::tcp_stream::rebind_executor<executor_with_default>::other;
using tcp = boost::asio::ip::tcp;
auto resolver = asio::use_awaitable_t<boost::asio::any_io_executor>::as_default_on(
tcp::resolver(co_await asio::this_coro::executor));
// We construct the ssl stream from the already rebound tcp_stream.
boost::beast::ssl_stream<tcp_stream>
stream{boost::asio::use_awaitable_t<boost::asio::any_io_executor>::as_default_on(
boost::beast::tcp_stream(co_await asio::this_coro::executor)),
*ssl_ctx};
// Set SNI Hostname (many hosts need this to handshake successfully)
if (!SSL_set_tlsext_host_name(stream.native_handle(), url.host().c_str()))
throw boost::system::system_error(static_cast<int>(::ERR_get_error()),
asio::error::get_ssl_category());
// Look up the domain name
auto const results = co_await resolver.async_resolve(url.host(), "https");
// Set the timeout.
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Make the connection on the IP address we get from a lookup
try {
co_await boost::beast::get_lowest_layer(stream).async_connect(results);
} catch (const boost::system::system_error& e) {
if (e.code() == asio::error::timed_out) {
co_return Err(Exception(Exception::OperationOutOfTime,
"[Session::handle_https_request] -- Connection timed out"));
}
co_return Err(Exception(
Exception::NetworkError,
std::format("[Session::handle_https_request] -- Error occurred when connecting: `{}`",
e.what())));
}
// Set the timeout.
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Perform the SSL handshake
try {
co_await stream.async_handshake(asio::ssl::stream_base::client);
} catch (const boost::system::system_error& e) {
co_return Err(Exception(Exception::SslError,
std::format("[Session::handle_https_request] -- Error occurred "
"when performing ssl handshake: `{}`",
e.what())));
}
req.prepare_payload();
// Set the timeout
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Send the HTTP request to the remote host
try {
co_await http::async_write(stream, req);
} catch (const boost::system::system_error& e) {
if (e.code() == asio::error::timed_out) {
co_return Err(
Exception(Exception::OperationOutOfTime,
"[Session::handle_https_request] -- Write operation timed out"));
}
co_return Err(Exception(Exception::NetworkError,
std::format("[Session::handle_https_request] -- Error occurred "
"when doing writing operation: `{}`",
e.what())));
}
// Declare a container to hold the response
http::response<http::dynamic_body> res;
boost::beast::flat_buffer buffer;
// Receive the HTTP response
try {
co_await http::async_read(stream, buffer, res);
} catch (const boost::system::system_error& e) {
if (e.code() == asio::error::timed_out) {
co_return Err(Exception(Exception::OperationOutOfTime,
"[Session::handle_https_request] -- Read operation timed out"));
}
co_return Err(Exception(Exception::NetworkError,
std::format("[Session::handle_https_request] -- Error occurred "
"when doing reading operation: `{}`",
e.what())));
}
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Gracefully close the stream - do not threat every error as an exception!
auto [ec] = co_await stream.async_shutdown(asio::as_tuple(asio::use_awaitable));
if (!ec || ec == asio::error::eof
|| (local_ctx.ignore_ssl_error && ec == asio::ssl::error::stream_truncated)
|| ec == boost::beast::error::timeout || ec == boost::asio::ssl::error::stream_truncated) {
/*here we got the request performed successfully*/
if (res.base().find(http::field::set_cookie) != res.base().end()) {
/*set cookie*/
CookieJar cookie_new;
std::ostringstream oss;
for (auto& field : res.base()) {
if (field.name() == http::field::set_cookie) {
auto cookie_res = parse_cookie(field.value());
if (cookie_res.isErr()) {
co_return Err(Exception(
Exception::JsonError,
std::format("[Session::perform_request] -- Cookie parse error: `{}`",
cookie_res.unwrapErr().what())));
}
auto cookie_dict = cookie_res.unwrap();
std::string domain, path = "/";
if (cookie_dict.contains("Domain")) {
domain = cookie_dict["Domain"].get<std::string>();
cookie_dict.erase("Domain");
}
if (cookie_dict.contains("Path")) {
path = cookie_dict["Path"].get<std::string>();
cookie_dict.erase("Path");
}
for (auto& i : cookie_dict.items()) {
cookie_new.set({
.domain = domain,
.path = path,
.key = i.key(),
.value = i.value().get<std::string>(),
});
}
}
}
local_ctx.cookies.merge(cookie_new);
/*write the change back to global context*/
sync_global();
}
if (auto_redirecting
&& (res.result() == http::status::found
|| res.result() == http::status::moved_permanently
|| res.result() == http::status::permanent_redirect)) {
/*handle redirecting*/
auto final_res = co_await handle_https_redirecting(*this, url, req, res, ssl_ctx);
if (final_res.isErr()) {
co_return Err(Exception(final_res.unwrapErr()));
}
co_return Ok(final_res.unwrap());
}
co_return Ok(res);
}
co_return Err(
Exception(Exception::UnknownError,
std::format("[Session::handle_https_request] -- Error occurred in the end: `{}`",
ec.message())));
}
} // namespace qqmusic::utils
static qqmusic::Task<qqmusic::Result<qqmusic::utils::HttpResponse>> handle_http_redirecting(
qqmusic::utils::Session& self,
boost::url_view url,
boost::beast::http::request<boost::beast::http::string_body>& req,
qqmusic::utils::HttpResponse& resp) {
using namespace qqmusic::utils;
const unsigned int REDIRECT_MAX_COUNT = 100;
unsigned int count = 0;
try {
boost::beast::tcp_stream tcps{asio::use_awaitable_t<asio::any_io_executor>::as_default_on(
boost::beast::tcp_stream(co_await asio::this_coro::executor))};
auto resolver = asio::use_awaitable_t<asio::any_io_executor>::as_default_on(
asio::ip::tcp::resolver(co_await asio::this_coro::executor));
auto& local_context = self.get_context_ref();
/*filter location*/
auto location = resp.base().find(http::field::location)->value();
auto prepare_verb = [](http::request<http::string_body>& req_old,
HttpResponse& resp_old) -> http::verb {
http::verb verb = req_old.method();
if (resp_old.result() == http::status::see_other && verb != http::verb::head) {
verb = http::verb::get;
}
if (resp_old.result() == http::status::found && verb != http::verb::head) {
verb = http::verb::get;
}
if (resp_old.result() == http::status::moved_permanently && verb == http::verb::post) {
verb = http::verb::get;
}
return verb;
};
auto prepare_url = [](boost::url_view old, std::string_view location) -> boost::url {
boost::url url_new{location};
/*if a url has no scheme and host, it is a relative url*/
if (!url_new.has_scheme() && url_new.host().empty()) {
url_new.set_host(old.host());
}
/*if url is not absolute*/
if (!url_new.is_path_absolute()) {
url_new.resolve(old);
}
/*add fragment*/
if (old.has_fragment() && !url_new.has_fragment()) {
url_new.set_fragment(old.fragment());
}
return url_new;
};
auto prepare_header = [](boost::url_view url_new,
http::request<http::string_body>& old,
http::request<http::string_body>& req_new) {
req_new.set(http::field::host, url_new.host());
for (auto& i : old.base()) {
if (i.name_string() != "Authorization" || i.name_string() != "Content-Length"
|| i.name_string() != "Cookie" || i.name_string() != "Host") {
req_new.set(i.name(), i.value());
}
}
};
boost::url url_next = prepare_url(url, location);
http::request<http::string_body> req_next{prepare_verb(req, resp), url_next, 11};
prepare_header(url_next, req, req_next);
auto path = url_next.path();
if (path.size() != 0) {
auto cookie_res = local_context.cookies.serialize(url_next.host(), path);
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
} else {
auto cookie_res = local_context.cookies.serialize(url_next.host());
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
}
while (count < REDIRECT_MAX_COUNT) {
/*redirecting*/
qqmusic::utils::HttpResponse res;
/*send request*/
auto resolv_res = co_await resolver.async_resolve(url_next.host(), "http");
boost::beast::get_lowest_layer(tcps).expires_after(local_context.timeout);
try {
/*Connect to endpoint*/
co_await boost::beast::get_lowest_layer(tcps).async_connect(resolv_res);
} catch (const boost::system::system_error& e) {
if (e.code() == boost::asio::error::timed_out) {
co_return qqmusic::utils::Exception(
qqmusic::utils::Exception::OperationOutOfTime,
std::format(
"[handle_http_redirecting] -- connecting to host `{}` out of time",
url.host()));
}
co_return Err(
qqmusic::utils::Exception(qqmusic::utils::Exception::NetworkError,
std::format("[handle_http_redirecting] -- connecting "
"to host `{}` failed, reason: `{}`",
url.host(),
e.what())));
}
req_next.prepare_payload();
try {
/*Send the request*/
co_await boost::beast::http::async_write(tcps, req);
} catch (const boost::system::system_error& e) {
if (e.code() == boost::asio::error::timed_out) {
co_return qqmusic::utils::Exception(
qqmusic::utils::Exception::OperationOutOfTime,
std::format(
"[handle_http_redirecting] -- connecting to host `{}` out of time",
url.host()));
}
co_return Err(qqmusic::utils::Exception(
qqmusic::utils::Exception::NetworkError,
std::format("[handle_http_redirecting] -- connecting to "
"host `{}` failed, reason: `{}`",
url.host(),
e.what())));
}
boost::beast::flat_buffer buffer;
try {
/*Receive HTTP response*/
co_await http::async_read(tcps, buffer, res);
} catch (const boost::system::system_error& e) {
if (e.code() == boost::asio::error::timed_out) {
co_return Err(
qqmusic::utils::Exception(qqmusic::utils::Exception::OperationOutOfTime,
"Read operation timed out"));
}
co_return Err(qqmusic::utils::Exception(
qqmusic::utils::Exception::NetworkError,
std::format("[handle_http_redirecting] -- Read operation error: `{}`",
e.what())));
}
/*Shutdown the connection*/
boost::system::error_code ec
= tcps.socket().shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
if (!ec || ec == asio::error::eof || ec == boost::beast::error::timeout) {
if (res.base().find(http::field::set_cookie) != res.base().end()) {
/*set cookie*/
CookieJar cookie_new;
std::ostringstream oss;
for (auto& field : res.base()) {
if (field.name() == http::field::set_cookie) {
auto cookie_res = parse_cookie(field.value());
if (cookie_res.isErr()) {
co_return Err(Exception(Exception::JsonError,
std::format("[Session::perform_request] -- "
"Cookie parse error: `{}`",
cookie_res.unwrapErr().what())));
}
auto cookie_dict = cookie_res.unwrap();
std::string domain, path = "/";
if (cookie_dict.contains("Domain")) {
domain = cookie_dict["Domain"].get<std::string>();
cookie_dict.erase("Domain");
}
if (cookie_dict.contains("Path")) {
path = cookie_dict["Path"].get<std::string>();
cookie_dict.erase("Path");
}
for (auto& i : cookie_dict.items()) {
cookie_new.set({
.domain = domain,
.path = path,
.key = i.key(),
.value = i.value().get<std::string>(),
});
}
}
}
local_context.cookies.merge(cookie_new);
/*write the change back to global context*/
self.sync_global();
}
if (res.result() == http::status::found
|| res.result() == http::status::moved_permanently
|| res.result() == http::status::permanent_redirect) {
/*handle redirecting*/
auto url_prev = url_next;
auto req_old = req_next;
location = resp.base().find(http::field::location)->value();
url_next = prepare_url(url_prev, location);
req_next = http::request<http::string_body>{prepare_verb(req_old, res),
url_next,
11};
prepare_header(url_next, req_old, req_next);
auto path = url_next.path();
if (path.size() != 0) {
auto cookie_res = local_context.cookies.serialize(url_next.host(), path);
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
} else {
auto cookie_res = local_context.cookies.serialize(url_next.host());
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
}
count++;
} else {
co_return Ok(res);
}
}
}
co_return Err(Exception(Exception::NetworkError,
"[handle_http_redirecting] -- Redirecting too many times"));
} catch (const std::exception& e) {
co_return Err(Exception(Exception::UnknownError,
std::format("[handle_http_redirecting] -- Error occurred when "
"handling redirecting: `{}`",
e.what())));
}
}
static qqmusic::Task<qqmusic::Result<qqmusic::utils::HttpResponse>> handle_https_redirecting(
qqmusic::utils::Session& self,
boost::url_view url,
boost::beast::http::request<boost::beast::http::string_body>& req,
qqmusic::utils::HttpResponse& resp,
std::shared_ptr<boost::asio::ssl::context> ssl_ctx) {
using namespace qqmusic::utils;
try {
using executor_with_default
= asio::use_awaitable_t<>::executor_with_default<asio::any_io_executor>;
using tcp_stream =
typename boost::beast::tcp_stream::rebind_executor<executor_with_default>::other;
using tcp = boost::asio::ip::tcp;
auto& local_ctx = self.get_context_ref();
auto location = resp.base().find(http::field::location)->value();
auto resolver = asio::use_awaitable_t<boost::asio::any_io_executor>::as_default_on(
tcp::resolver(co_await asio::this_coro::executor));
auto prepare_verb = [](http::request<http::string_body>& req_old,
HttpResponse& resp_old) -> http::verb {
http::verb verb = req_old.method();
if (resp_old.result() == http::status::see_other && verb != http::verb::head) {
verb = http::verb::get;
}
if (resp_old.result() == http::status::found && verb != http::verb::head) {
verb = http::verb::get;
}
if (resp_old.result() == http::status::moved_permanently && verb == http::verb::post) {
verb = http::verb::get;
}
return verb;
};
auto prepare_url = [](boost::url_view old, std::string_view location) -> boost::url {
boost::url url_new{location};
/*if a url has no scheme and host, it is a relative url*/
if (!url_new.has_scheme() && url_new.host().empty()) {
url_new.set_host(old.host());
}
/*if url is not absolute*/
if (!url_new.is_path_absolute()) {
url_new.resolve(old);
}
/*add fragment*/
if (old.has_fragment() && !url_new.has_fragment()) {
url_new.set_fragment(old.fragment());
}
return url_new;
};
auto prepare_header = [](boost::url_view url_new,
http::request<http::string_body>& old,
http::request<http::string_body>& req_new) {
req_new.set(http::field::host, url_new.host());
for (auto& i : old.base()) {
if (i.name() != http::field::authorization
&& i.name() != http::field::content_length && i.name() != http::field::cookie
&& i.name() != http::field::host) {
req_new.set(i.name(), i.value());
}
}
};
boost::url url_next = prepare_url(url, location);
http::request<http::string_body> req_next{prepare_verb(req, resp), url_next, 11};
prepare_header(url_next, req, req_next);
auto path = url_next.path();
if (path.size() != 0) {
auto cookie_res = local_ctx.cookies.serialize(url_next.host(), path);
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
} else {
auto cookie_res = local_ctx.cookies.serialize(url_next.host());
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
}
unsigned int count = 0;
const unsigned int REDIRECT_MAX_COUNT = 100;
while (count < REDIRECT_MAX_COUNT) {
/*redirecting*/
qqmusic::utils::HttpResponse res;
boost::beast::flat_buffer buffer;
// We construct the ssl stream from the already rebound tcp_stream.
boost::beast::ssl_stream<tcp_stream>
stream{boost::asio::use_awaitable_t<boost::asio::any_io_executor>::as_default_on(
boost::beast::tcp_stream(co_await asio::this_coro::executor)),
*ssl_ctx};
// Set SNI Hostname (many hosts need this to handshake successfully)
if (!SSL_set_tlsext_host_name(stream.native_handle(), url_next.host().c_str()))
throw boost::system::system_error(static_cast<int>(::ERR_get_error()),
asio::error::get_ssl_category());
// Look up the domain name
auto const results = co_await resolver.async_resolve(url_next.host(), "https");
// Set the timeout.
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Make the connection on the IP address we get from a lookup
try {
co_await boost::beast::get_lowest_layer(stream).async_connect(results);
} catch (const boost::system::system_error& e) {
if (e.code() == asio::error::timed_out) {
co_return Err(Exception(Exception::OperationOutOfTime,
"[handle_https_redirecting] -- Connection timed out"));
}
co_return Err(Exception(Exception::NetworkError,
std::format("[handle_https_redirecting] -- Error occurred "
"when connecting: `{}`",
e.what())));
}
// Set the timeout.
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Perform the SSL handshake
try {
co_await stream.async_handshake(asio::ssl::stream_base::client);
} catch (const boost::system::system_error& e) {
co_return Err(Exception(Exception::SslError,
std::format("[handle_https_redirecting] -- Error occurred "
"when performing ssl handshake: `{}`",
e.what())));
}
req_next.prepare_payload();
// Set the timeout
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Send the HTTP request to the remote host
try {
co_await http::async_write(stream, req_next);
} catch (const boost::system::system_error& e) {
if (e.code() == asio::error::timed_out) {
co_return Err(
Exception(Exception::OperationOutOfTime,
"[handle_https_redirecting] -- Write operation timed out"));
}
co_return Err(Exception(Exception::NetworkError,
std::format("[handle_https_redirecting] -- Error occurred "
"when doing writing operation: `{}`",
e.what())));
}
// Receive the HTTP response
try {
co_await http::async_read(stream, buffer, res);
} catch (const boost::system::system_error& e) {
if (e.code() == asio::error::timed_out) {
co_return Err(
Exception(Exception::OperationOutOfTime,
"[handle_https_redirecting] -- Read operation timed out"));
}
co_return Err(Exception(Exception::NetworkError,
std::format("[handle_https_redirecting] -- Error occurred "
"when doing reading operation: `{}`",
e.what())));
}
boost::beast::get_lowest_layer(stream).expires_after(local_ctx.timeout);
// Gracefully close the stream - do not threat every error as an exception!
auto [ec] = co_await stream.async_shutdown(asio::as_tuple(asio::use_awaitable));
if (!ec || ec == asio::error::eof
|| (local_ctx.ignore_ssl_error && ec == asio::ssl::error::stream_truncated)
|| ec == boost::beast::error::timeout
|| ec == boost::asio::ssl::error::stream_truncated) {
// If we get here then the connection is closed gracefully
if (res.base().find(http::field::set_cookie) != res.base().end()) {
/*set cookie*/
CookieJar cookie_new;
std::ostringstream oss;
for (auto& field : res.base()) {
if (field.name() == http::field::set_cookie) {
auto cookie_res = parse_cookie(field.value());
if (cookie_res.isErr()) {
co_return Err(Exception(Exception::JsonError,
std::format("[Session::perform_request] -- "
"Cookie parse error: `{}`",
cookie_res.unwrapErr().what())));
}
auto cookie_dict = cookie_res.unwrap();
std::string domain, path = "/";
if (cookie_dict.contains("Domain")) {
domain = cookie_dict["Domain"].get<std::string>();
cookie_dict.erase("Domain");
}
if (cookie_dict.contains("Path")) {
path = cookie_dict["Path"].get<std::string>();
cookie_dict.erase("Path");
}
for (auto& i : cookie_dict.items()) {
cookie_new.set({
.domain = domain,
.path = path,
.key = i.key(),
.value = i.value().get<std::string>(),
});
}
}
}
local_ctx.cookies.merge(cookie_new);
/*write the change back to global context*/
self.sync_global();
}
if (res.result() == http::status::found
|| res.result() == http::status::moved_permanently
|| res.result() == http::status::permanent_redirect) {
/*prepare next request*/
auto url_prev = url_next;
auto req_old = req_next;
location = resp.base().find(http::field::location)->value();
url_next = prepare_url(url_prev, location);
req_next = http::request<http::string_body>{prepare_verb(req_old, res),
url_next,
11};
prepare_header(url_next, req_old, req_next);
auto path = url_next.path();
if (path.size() != 0) {
auto cookie_res = local_ctx.cookies.serialize(url_next.host(), path);
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
} else {
auto cookie_res = local_ctx.cookies.serialize(url_next.host());
if (cookie_res.isOk()) {
req_next.set(http::field::cookie, cookie_res.unwrap());
}
}
count++;
} else {
co_return Ok(res);
}
}
co_return Err(Exception(
Exception::UnknownError,
std::format("[handle_https_redirecting] -- Error occurred in the end: `{}`",
ec.message())));
}
co_return Err(Exception(Exception::NetworkError,
"[handle_https_redirecting] -- Redirecting too many times"));
} catch (const std::exception& e) {
co_return Err(Exception(Exception::UnknownError,
std::format("[handle_https_redirecting] -- Error occurred when "
"handling redirecting: `{}`",
e.what())));
}
}