Reuses MockServer's bounded raw response script as decrypted HTTP/2 proxy frames. More...

#include <h2_proxy_mock_server.h>

Inheritance diagram for proto_fuzzer::H2ProxyMockServer:

Public Member Functions
	H2ProxyMockServer (H2ProxyMode mode=H2ProxyMode::kTunnel, curl::fuzzer::proto::ProxyProtocol protocol=curl::fuzzer::proto::PROXY_PROTOCOL_HTTP2)
	Select the closed proxy protocol profile before any connection opens.
void	Install (CURL *easy) override
	Install the socket transport and force one verified HTTPS proxy.
const std::string &	client_transcript () const
Public Member Functions inherited from proto_fuzzer::TlsMockServer
	TlsMockServer ()
	Build one reusable in-process server context per fuzz iteration.
	TlsMockServer (curl::fuzzer::proto::TlsCertificateChainProfile certificate_chain, curl::fuzzer::proto::TlsHandshakeProfile handshake_profile=curl::fuzzer::proto::TLS_HANDSHAKE_DEFAULT)
	Select one bounded certificate-chain profile for an HTTP/1.1 TLS peer.
	~TlsMockServer () override
	Release SSL objects before their owning server context.
void	Install (CURL *easy) override
	Install common socket callbacks and a stable local trust anchor.
bool	saw_live_tls_session () const
std::size_t	exported_session_count () const
std::size_t	imported_session_count () const
int	negotiated_tls_version () const
std::size_t	completed_handshake_count () const
std::size_t	reused_session_count () const
std::size_t	write_retry_count () const
std::string	negotiated_alpn () const
std::string	negotiated_group () const
int	ech_status () const
std::string	ech_inner_name () const
std::string	ech_outer_name () const
Public Member Functions inherited from proto_fuzzer::MockServer
	MockServer (MultiDrivePolicy drive_policy=MultiDrivePolicy::kPerform)
	Construct an idle MockServer with no scripted responses or open peers.
	~MockServer () override
	Default destructor; current and previous MockConnections clean up their server-side descriptors only after curl has been removed from the multi.
void	SetScripts (const curl::fuzzer::proto::Scenario &scenario)
	Build the complete borrowed script table before entering curl.
void	SetKeepConnectionsOpen (bool keep_open)
	Keep completed response sockets writable instead of half-closing them.
CURLcode	DriveEasyScenario (CURL *easy, const curl::fuzzer::proto::Scenario &scenario, bool use_events=false) override
	Preload all bounded response bytes from inside OPENSOCKETFUNCTION, where the mock still owns both socketpair ends, and half-close the peer when the preload finishes.
ConnectOnlyRunStats	DriveConnectOnlyScenario (CURL *easy, const curl::fuzzer::proto::Scenario &scenario) override
	Establish only the HTTP transport, then pass bounded application bytes through curl's public direct-I/O wrappers.
bool	DeliverNextChunk ()
	Push the next queued chunk.
bool	has_more_chunks () const
bool	ServiceConnections ()
	Service one deterministic application event-loop turn by draining all available request bytes and releasing at most one response chunk.
std::size_t	opened_connection_count () const
	Report how many peer sockets curl opened during the current script run.
Public Member Functions inherited from proto_fuzzer::MockServerBase
virtual	~MockServerBase ()
	Out-of-line destructor so MockConnection can stay forward-declared in the base header (its complete type is only needed where unique_ptr is instantiated for destruction).
virtual void	ObserveState ()
	Default no-op for peers without protocol-specific observations.
virtual void	ConfigureRequestData (ScenarioRequestData *request_data)
	Bind protocol-specific work to the request-data callbacks after their per-scenario state has been constructed.
CURLcode	DriveScenario (CURL *easy, const curl::fuzzer::proto::Scenario &scenario)
	Run 'scenario' to completion on 'easy': allocate a multi, attach 'easy', delegate protocol-specific work to RunLoop, consume its completion message, and clean up.
void	SetMultiObserver (MultiObserver observer)
	Register an observer invoked with the live multi handle after 'easy' is attached and before the drive loop starts.
MockConnection *	connection ()

Protected Member Functions
std::unique_ptr< MockConnection >	CreateConnection () override
	Attach a bounded observer after TLS decoding so tests can verify the real CONNECT request rather than inferring it from the response status alone.
Protected Member Functions inherited from proto_fuzzer::TlsMockServer
	TlsMockServer (TlsApplicationProtocol protocol, curl::fuzzer::proto::TlsCertificateChainProfile certificate_chain=curl::fuzzer::proto::TLS_CERTIFICATE_CHAIN_DEFAULT_EC, TlsGroupPolicy group_policy=TlsGroupPolicy::kProviderDefault, curl::fuzzer::proto::TlsHandshakeProfile handshake_profile=curl::fuzzer::proto::TLS_HANDSHAKE_DEFAULT)
	Construct the shared TLS transport for a protocol-specific derived peer with one fixed ALPN outcome.
TlsGroupPolicy	group_policy () const
std::unique_ptr< MockConnection >	CreateConnection () override
	Wrap one socketpair server endpoint in an OpenSSL acceptor consumed by MockServer.
void	ObserveActiveTransfer (CURL *easy) override
	Query while the connection filters are attached.
Protected Member Functions inherited from proto_fuzzer::MockServer
void	ResetConnections ()
	Release all current and retired socketpairs before resetting transport- specific state.
virtual bool	SupportsRepeatedPollsetProbe () const
	Ordinary HTTP and compatibility peers retain the historical perform-only loop even if an append-only scenario field is present.
curl_socket_t	HandleOpenSocket (curlsocktype purpose=CURLSOCKTYPE_IPCXN, struct curl_sockaddr *address=nullptr) override
	Called by the OPENSOCKETFUNCTION trampoline in the base class.
void	RunLoop (CURLM multi, CURL easy, const curl::fuzzer::proto::Scenario &scenario) override
	Seed the mock from the scenario, then drive the perform loop until curl is done or a deterministic operation/idle budget is hit.
Protected Member Functions inherited from proto_fuzzer::MockServerBase
	MockServerBase (MultiDrivePolicy drive_policy=MultiDrivePolicy::kPerform)
	Construct an empty base instance with a fixed multi-drive policy.
virtual void	HandleDetachedMulti (CurlMultiPtr multi)
	Dispose of or retain the multi after its easy handle has been removed.
virtual SocketSetupDisposition	GetSocketSetupDisposition (curl_socket_t curlfd, curlsocktype purpose) const
	Describe the socket returned by HandleOpenSocket without issuing native descriptor queries.
MultiSocketDriver *	multi_socket_driver ()
	Expose the callback state installed for the current socket-action drive.
std::size_t	additional_handle_cleanup_count () const
void	ResumeResponseIfRequested (CURL *easy)
	Resume receive-side callback output at one bounded drive boundary when the dedicated API plan requested it.
void	ApplyPendingBackpressure ()
	Apply the BackpressureConfig cached by DriveScenario to the new connection_.

Additional Inherited Members
Public Types inherited from proto_fuzzer::MockServerBase
using	MultiObserver = std::function<void(CURLM*)>
	Callback type used to publish the driving multi handle to observers.
Static Protected Member Functions inherited from proto_fuzzer::MockServerBase
static int	WaitOnMultiFdset (CURLM multi, CURLMcode rc)
	Wait on curl's fdset with a short timeout.
static void	ProbeMultiPollset (CURLM *multi)
	Ask curl to construct and inspect its connection-filter pollset without waiting.
static bool	MultiPollsetWantsWrite (CURLM *multi, curl_socket_t socket)
	Inspect one socket's current writable interest through curl's public multi fdset API.
static bool	UsesTimedDrive (const curl::fuzzer::proto::Scenario &scenario)
	Treat a non-default BackpressureConfig as an explicit request for the slower, timed drive policy.
Protected Attributes inherited from proto_fuzzer::MockServerBase
std::unique_ptr< MockConnection >	connection_
	The per-scenario MockConnection, lazily created by HandleOpenSocket().
int	pending_recv_buf_bytes_
	Cached SO_RCVBUF/SO_SNDBUF setting in bytes.
std::size_t	pending_drain_limit_
	Cached per-call DrainIncoming byte budget.
MultiSocketDriver *	multi_socket_driver_
	Non-owning pointer into DriveScenario's stack.
std::size_t	additional_handle_cleanup_count_
	Number of application-created handles, excluding the caller's parent, successfully removed from the current multi and cleaned up.
bool	resume_response_
	True only for an API-plan multi drive with its one-shot write callback.
MultiObserver	multi_observer_
	Observer receiving the live multi handle at the start of a drive.
Static Protected Attributes inherited from proto_fuzzer::MockServerBase
static constexpr int	kMaxDriveIterations = 512
	Hard operation budget for one scenario.
static constexpr int	kMaxIdleIterations = 8
	Consecutive no-progress budget for ordinary scenarios.
static constexpr int	kMaxTimedIdleIterations = 256
	Explicit backpressure scenarios get a larger idle budget and may use the short timed wait above.

Detailed Description

Reuses MockServer's bounded raw response script as decrypted HTTP/2 proxy frames.

The fixed proxy transport is deliberately separate from the mutation-controlled HTTP origin: every accepted input reaches TLS ALPN and proxy request setup without DNS, while frame bytes still explore curl/nghttp2's success and error paths.

Definition at line 30 of file h2_proxy_mock_server.h.

Constructor & Destructor Documentation

◆ H2ProxyMockServer()

proto_fuzzer::H2ProxyMockServer::H2ProxyMockServer	(	H2ProxyMode	mode = H2ProxyMode::kTunnel,
		curl::fuzzer::proto::ProxyProtocol	protocol = curl::fuzzer::proto::PROXY_PROTOCOL_HTTP2 )

explicit

Select the closed proxy protocol profile before any connection opens.

ALPN is the gate that chooses curl's H2 proxy filter or HTTP/1 CONNECT parser. HTTP/1 has no direct-forwarding mode, so it always uses a tunnel.

Parameters

mode	Origin request shape for an HTTP/2 proxy.
protocol	Fixed proxy application protocol for this server.

Definition at line 25 of file h2_proxy_mock_server.cc.

Member Function Documentation

◆ client_transcript()

const std::string & proto_fuzzer::H2ProxyMockServer::client_transcript ( ) const

Returns: Bounded decrypted bytes curl sent to the proxy peer.

Definition at line 85 of file h2_proxy_mock_server.cc.

◆ CreateConnection()

std::unique_ptr< MockConnection > proto_fuzzer::H2ProxyMockServer::CreateConnection ( )

overrideprotectedvirtual

Attach a bounded observer after TLS decoding so tests can verify the real CONNECT request rather than inferring it from the response status alone.

Returns: Newly allocated TLS connection with the transcript observer.

Reimplemented from proto_fuzzer::MockServer.

Definition at line 67 of file h2_proxy_mock_server.cc.

◆ Install()

void proto_fuzzer::H2ProxyMockServer::Install ( CURL * easy )

overridevirtual

Install the socket transport and force one verified HTTPS proxy.

Tunnel mode keeps the plaintext HTTP origin inside CONNECT; the HTTP/2-only forward mode submits that origin request directly on the proxy stream. Only routing and outer TLS properties are fixed: response frames, origin method, headers, and body remain scenario-controlled beyond setup.

Parameters

easy	Easy handle that will connect through this proxy.

Reimplemented from proto_fuzzer::MockServerBase.

Definition at line 37 of file h2_proxy_mock_server.cc.

The documentation for this class was generated from the following files:

proto_fuzzer/h2_proxy_mock_server.h
proto_fuzzer/h2_proxy_mock_server.cc

Public Member Functions

Protected Member Functions