function customMetadata($stub)
{
$ECHO_INITIAL_KEY = 'x-grpc-test-echo-initial';
$ECHO_INITIAL_VALUE = 'test_initial_metadata_value';
$ECHO_TRAILING_KEY = 'x-grpc-test-echo-trailing-bin';
$ECHO_TRAILING_VALUE = 'ababab';
$request_len = 271828;
$response_len = 314159;
$request = new grpc\testing\SimpleRequest();
$request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
$request->setResponseSize($response_len);
$payload = new grpc\testing\Payload();
$payload->setType(grpc\testing\PayloadType::COMPRESSABLE);
$payload->setBody(str_repeat("", $request_len));
$request->setPayload($payload);
$metadata = [$ECHO_INITIAL_KEY => [$ECHO_INITIAL_VALUE], $ECHO_TRAILING_KEY => [$ECHO_TRAILING_VALUE]];
$call = $stub->UnaryCall($request, $metadata);
$initial_metadata = $call->getMetadata();
hardAssert(array_key_exists($ECHO_INITIAL_KEY, $initial_metadata), 'Initial metadata does not contain expected key');
hardAssert($initial_metadata[$ECHO_INITIAL_KEY][0] == $ECHO_INITIAL_VALUE, 'Incorrect initial metadata value');
list($result, $status) = $call->wait();
hardAssert($status->code === Grpc\STATUS_OK, 'Call did not complete successfully');
$trailing_metadata = $call->getTrailingMetadata();
hardAssert(array_key_exists($ECHO_TRAILING_KEY, $trailing_metadata), 'Trailing metadata does not contain expected key');
hardAssert($trailing_metadata[$ECHO_TRAILING_KEY][0] == $ECHO_TRAILING_VALUE, 'Incorrect trailing metadata value');
$streaming_call = $stub->FullDuplexCall($metadata);
$streaming_request = new grpc\testing\StreamingOutputCallRequest();
$streaming_request->setPayload($payload);
$streaming_call->write($streaming_request);
$streaming_call->writesDone();
hardAssert($streaming_call->getStatus()->code === Grpc\STATUS_OK, 'Call did not complete successfully');
$streaming_trailing_metadata = $streaming_call->getTrailingMetadata();
hardAssert(array_key_exists($ECHO_TRAILING_KEY, $streaming_trailing_metadata), 'Trailing metadata does not contain expected key');
hardAssert($streaming_trailing_metadata[$ECHO_TRAILING_KEY][0] == $ECHO_TRAILING_VALUE, 'Incorrect trailing metadata value');
}
function timeoutOnSleepingServer($stub)
{
$call = $stub->FullDuplexCall([], ['timeout' => 1000]);
$request = new grpc\testing\StreamingOutputCallRequest();
$request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
$response_parameters = new grpc\testing\ResponseParameters();
$response_parameters->setSize(8);
$request->addResponseParameters($response_parameters);
$payload = new grpc\testing\Payload();
$payload->setBody(str_repeat("", 9));
$request->setPayload($payload);
$call->write($request);
$response = $call->read();
hardAssert($call->getStatus()->code === Grpc\STATUS_DEADLINE_EXCEEDED, 'Call status was not DEADLINE_EXCEEDED');
}
function cancelAfterFirstResponse($stub)
{
$call = $stub->FullDuplexCall();
$request = new grpc\testing\StreamingOutputCallRequest();
$request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
$response_parameters = new grpc\testing\ResponseParameters();
$response_parameters->setSize(31415);
$request->addResponseParameters($response_parameters);
$payload = new grpc\testing\Payload();
$payload->setBody(str_repeat("", 27182));
$request->setPayload($payload);
$call->write($request);
$response = $call->read();
$call->cancel();
hardAssert($call->getStatus()->code === Grpc\STATUS_CANCELLED, 'Call status was not CANCELLED');
}