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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/crt/Api.h>
#include <aws/crt/http/HttpConnectionManager.h>
#include <aws/crt/http/HttpProxyStrategy.h>
#include <algorithm>
#include <aws/http/connection_manager.h>
namespace Aws
{
namespace Crt
{
namespace Http
{
struct ConnectionManagerCallbackArgs
{
ConnectionManagerCallbackArgs() = default;
OnClientConnectionAvailable m_onClientConnectionAvailable;
std::shared_ptr<HttpClientConnectionManager> m_connectionManager;
};
void HttpClientConnectionManager::s_shutdownCompleted(void *userData) noexcept
{
HttpClientConnectionManager *connectionManager =
reinterpret_cast<HttpClientConnectionManager *>(userData);
connectionManager->m_shutdownPromise.set_value();
}
HttpClientConnectionManagerOptions::HttpClientConnectionManagerOptions() noexcept
: ConnectionOptions(), MaxConnections(1), EnableBlockingShutdown(false)
{
}
std::shared_ptr<HttpClientConnectionManager> HttpClientConnectionManager::NewClientConnectionManager(
const HttpClientConnectionManagerOptions &connectionManagerOptions,
Allocator *allocator) noexcept
{
const Optional<Io::TlsConnectionOptions> &tlsOptions =
connectionManagerOptions.ConnectionOptions.TlsOptions;
if (tlsOptions && !(*tlsOptions))
{
AWS_LOGF_ERROR(
AWS_LS_HTTP_GENERAL,
"Cannot create HttpClientConnectionManager: ConnectionOptions contain invalid TLSOptions.");
aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
return nullptr;
}
const Crt::Optional<Crt::Http::HttpClientConnectionProxyOptions> &proxyOptions =
connectionManagerOptions.ConnectionOptions.ProxyOptions;
if (proxyOptions && proxyOptions->TlsOptions && !(*proxyOptions->TlsOptions))
{
AWS_LOGF_ERROR(
AWS_LS_HTTP_GENERAL,
"Cannot create HttpClientConnectionManager: ProxyOptions has ConnectionOptions that contain "
"invalid TLSOptions.");
aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
return nullptr;
}
auto *toSeat = static_cast<HttpClientConnectionManager *>(
aws_mem_acquire(allocator, sizeof(HttpClientConnectionManager)));
if (toSeat)
{
toSeat = new (toSeat) HttpClientConnectionManager(connectionManagerOptions, allocator);
return std::shared_ptr<HttpClientConnectionManager>(
toSeat, [allocator](HttpClientConnectionManager *manager) { Delete(manager, allocator); });
}
return nullptr;
}
HttpClientConnectionManager::HttpClientConnectionManager(
const HttpClientConnectionManagerOptions &options,
Allocator *allocator) noexcept
: m_allocator(allocator), m_connectionManager(nullptr), m_options(options), m_releaseInvoked(false)
{
const auto &connectionOptions = m_options.ConnectionOptions;
AWS_FATAL_ASSERT(connectionOptions.HostName.size() > 0);
AWS_FATAL_ASSERT(connectionOptions.Port > 0);
aws_http_connection_manager_options managerOptions;
AWS_ZERO_STRUCT(managerOptions);
if (connectionOptions.Bootstrap != nullptr)
{
managerOptions.bootstrap = connectionOptions.Bootstrap->GetUnderlyingHandle();
}
else
{
managerOptions.bootstrap =
ApiHandle::GetOrCreateStaticDefaultClientBootstrap()->GetUnderlyingHandle();
}
managerOptions.port = connectionOptions.Port;
managerOptions.max_connections = m_options.MaxConnections;
managerOptions.socket_options = &connectionOptions.SocketOptions.GetImpl();
managerOptions.initial_window_size = connectionOptions.InitialWindowSize;
if (options.EnableBlockingShutdown)
{
managerOptions.shutdown_complete_callback = s_shutdownCompleted;
managerOptions.shutdown_complete_user_data = this;
}
else
{
m_shutdownPromise.set_value();
}
aws_http_proxy_options proxyOptions;
AWS_ZERO_STRUCT(proxyOptions);
if (connectionOptions.ProxyOptions)
{
/* This is verified by HttpClientConnectionManager::NewClientConnectionManager */
AWS_FATAL_ASSERT(
!connectionOptions.ProxyOptions->TlsOptions || *connectionOptions.ProxyOptions->TlsOptions);
const auto &proxyOpts = connectionOptions.ProxyOptions.value();
proxyOpts.InitializeRawProxyOptions(proxyOptions);
managerOptions.proxy_options = &proxyOptions;
}
if (connectionOptions.TlsOptions)
{
/* This is verified by HttpClientConnectionManager::NewClientConnectionManager */
AWS_FATAL_ASSERT(*connectionOptions.TlsOptions);
managerOptions.tls_connection_options =
const_cast<aws_tls_connection_options *>(connectionOptions.TlsOptions->GetUnderlyingHandle());
}
managerOptions.host = aws_byte_cursor_from_c_str(connectionOptions.HostName.c_str());
m_connectionManager = aws_http_connection_manager_new(allocator, &managerOptions);
}
HttpClientConnectionManager::~HttpClientConnectionManager()
{
if (!m_releaseInvoked)
{
aws_http_connection_manager_release(m_connectionManager);
m_shutdownPromise.get_future().get();
}
m_connectionManager = nullptr;
}
bool HttpClientConnectionManager::AcquireConnection(
const OnClientConnectionAvailable &onClientConnectionAvailable) noexcept
{
auto connectionManagerCallbackArgs = Aws::Crt::New<ConnectionManagerCallbackArgs>(m_allocator);
if (!connectionManagerCallbackArgs)
{
return false;
}
connectionManagerCallbackArgs->m_connectionManager = shared_from_this();
connectionManagerCallbackArgs->m_onClientConnectionAvailable = onClientConnectionAvailable;
aws_http_connection_manager_acquire_connection(
m_connectionManager, s_onConnectionSetup, connectionManagerCallbackArgs);
return true;
}
std::future<void> HttpClientConnectionManager::InitiateShutdown() noexcept
{
m_releaseInvoked = true;
aws_http_connection_manager_release(m_connectionManager);
return m_shutdownPromise.get_future();
}
class ManagedConnection final : public HttpClientConnection
{
public:
ManagedConnection(
aws_http_connection *connection,
std::shared_ptr<HttpClientConnectionManager> connectionManager)
: HttpClientConnection(connection, connectionManager->m_allocator),
m_connectionManager(std::move(connectionManager))
{
}
~ManagedConnection() override
{
if (m_connection)
{
aws_http_connection_manager_release_connection(
m_connectionManager->m_connectionManager, m_connection);
m_connection = nullptr;
}
}
private:
std::shared_ptr<HttpClientConnectionManager> m_connectionManager;
};
void HttpClientConnectionManager::s_onConnectionSetup(
aws_http_connection *connection,
int errorCode,
void *userData) noexcept
{
auto callbackArgs = static_cast<ConnectionManagerCallbackArgs *>(userData);
std::shared_ptr<HttpClientConnectionManager> manager = callbackArgs->m_connectionManager;
auto callback = std::move(callbackArgs->m_onClientConnectionAvailable);
Delete(callbackArgs, manager->m_allocator);
if (errorCode)
{
callback(nullptr, errorCode);
return;
}
auto allocator = manager->m_allocator;
auto connectionRawObj = Aws::Crt::New<ManagedConnection>(manager->m_allocator, connection, manager);
if (!connectionRawObj)
{
aws_http_connection_manager_release_connection(manager->m_connectionManager, connection);
callback(nullptr, AWS_ERROR_OOM);
return;
}
auto connectionObj = std::shared_ptr<ManagedConnection>(
connectionRawObj,
[allocator](ManagedConnection *managedConnection) { Delete(managedConnection, allocator); });
callback(connectionObj, AWS_OP_SUCCESS);
}
} // namespace Http
} // namespace Crt
} // namespace Aws
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