curl-fuzzer C++ reference
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proto_fuzzer::H2CleartextMockServer Class Referencefinal

Drives raw or structured HTTP/2 frames over a local plaintext socketpair. More...

#include <h2_cleartext_mock_server.h>

Inheritance diagram for proto_fuzzer::H2CleartextMockServer:
proto_fuzzer::MockServer proto_fuzzer::MockServerBase

Public Member Functions

 H2CleartextMockServer (bool connect_flush_probe=false)
 Construct a prior-knowledge peer, optionally with a full client send path.
void Install (CURL *easy) override
 Install the socketpair peer and force HTTP/2 prior-knowledge mode.
const H2Runtime & runtime () const
 Expose shared protocol observations without allowing carrier state changes.
std::size_t cleaned_push_count () 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 the reusable H2 client-frame tracker to the plaintext connection.
void RunLoop (CURLM *multi, CURL *easy, const curl::fuzzer::proto::Scenario &scenario) override
 Drive raw or structured H2 peer work and probe server push and upkeep.
void HandleDetachedMulti (CurlMultiPtr multi) override
 Retain the detached connection cache until after caller-owned easy cleanup.
Protected Member Functions inherited from proto_fuzzer::MockServer
void ResetConnections ()
 Release all current and retired socketpairs before resetting transport- specific state.
virtual void ObserveActiveTransfer (CURL *easy)
 Observe curl while its connection filters are still attached.
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 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

Drives raw or structured HTTP/2 frames over a local plaintext socketpair.

Prior-knowledge mode enters curl's HTTP/2 state machine without paying for a TLS handshake, while retaining the same multi/easy cleanup ordering as the HTTPS/HTTP2 origin lane.

Definition at line 27 of file h2_cleartext_mock_server.h.

Constructor & Destructor Documentation

◆ H2CleartextMockServer()

proto_fuzzer::H2CleartextMockServer::H2CleartextMockServer ( bool connect_flush_probe = false)
explicit

Construct a prior-knowledge peer, optionally with a full client send path.

Parameters
connect_flush_probeWhether to saturate curl's endpoint before fd ownership is transferred.

Definition at line 25 of file h2_cleartext_mock_server.cc.

Member Function Documentation

◆ cleaned_push_count()

std::size_t proto_fuzzer::H2CleartextMockServer::cleaned_push_count ( ) const
Returns
Number of accepted pushed handles explicitly cleaned up.

Definition at line 105 of file h2_cleartext_mock_server.cc.

◆ CreateConnection()

std::unique_ptr< MockConnection > proto_fuzzer::H2CleartextMockServer::CreateConnection ( )
overrideprotectedvirtual

Attach the reusable H2 client-frame tracker to the plaintext connection.

Returns
Newly allocated plaintext connection, with the frame tracker attached unless the connection is reserved for the transport-only probe.

Reimplemented from proto_fuzzer::MockServer.

Definition at line 45 of file h2_cleartext_mock_server.cc.

◆ HandleDetachedMulti()

void proto_fuzzer::H2CleartextMockServer::HandleDetachedMulti ( CurlMultiPtr multi)
overrideprotectedvirtual

Retain the detached connection cache until after caller-owned easy cleanup.

Parameters
multiDetached multi handle and its live connection cache.

Reimplemented from proto_fuzzer::MockServerBase.

Definition at line 98 of file h2_cleartext_mock_server.cc.

◆ Install()

void proto_fuzzer::H2CleartextMockServer::Install ( CURL * easy)
overridevirtual

Install the socketpair peer and force HTTP/2 prior-knowledge mode.

Parameters
easyEasy handle to configure.

Reimplemented from proto_fuzzer::MockServerBase.

Definition at line 36 of file h2_cleartext_mock_server.cc.

◆ RunLoop()

void proto_fuzzer::H2CleartextMockServer::RunLoop ( CURLM * multi,
CURL * easy,
const curl::fuzzer::proto::Scenario & scenario )
overrideprotectedvirtual

Drive raw or structured H2 peer work and probe server push and upkeep.

Parameters
multiMulti handle containing easy.
easyEasy handle attached to this mock.
scenarioSource of bounded HTTP/2 response work.

Implements proto_fuzzer::MockServerBase.

Definition at line 67 of file h2_cleartext_mock_server.cc.

◆ runtime()

const H2Runtime & proto_fuzzer::H2CleartextMockServer::runtime ( ) const

Expose shared protocol observations without allowing carrier state changes.

Returns
Runtime owned by this plaintext carrier.

Definition at line 102 of file h2_cleartext_mock_server.cc.


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