Request* Request::clone(ExceptionState& exceptionState) const
{
if (bodyUsed()) {
exceptionState.throwTypeError("Request body is already used");
return nullptr;
}
FetchRequestData* request = m_request->clone();
if (blobDataHandle() && isBodyConsumed()) {
// Currently the only methods that can consume body data without
// setting 'body passed' flag consume entire body (e.g. text()). Thus
// we can set an empty blob to the new request instead of creating a
// draining stream.
// TODO(yhirano): Fix this once Request.body is introduced.
OwnPtr<BlobData> blobData = BlobData::create();
blobData->setContentType(blobDataHandle()->type());
request->setBlobDataHandle(BlobDataHandle::create(blobData.release(), 0));
}
Headers* headers = Headers::create(request->headerList());
headers->setGuard(m_headers->guard());
Request* r = new Request(executionContext(), request, headers);
r->suspendIfNeeded();
return r;
}
ScriptPromise Body::rejectInvalidConsumption(ScriptState* scriptState)
{
if (m_opaque)
return ScriptPromise::reject(scriptState, V8ThrowException::createTypeError(scriptState->isolate(), "The body is opaque."));
if (bodyUsed())
return ScriptPromise::reject(scriptState, V8ThrowException::createTypeError(scriptState->isolate(), "Already read"));
return ScriptPromise();
}
Response* Response::clone(ExceptionState& exceptionState)
{
if (isBodyLocked() || bodyUsed()) {
exceptionState.throwTypeError("Response body is already used");
return nullptr;
}
FetchResponseData* response = m_response->clone(executionContext());
Headers* headers = Headers::create(response->headerList());
headers->setGuard(m_headers->guard());
return new Response(executionContext(), response, headers);
}
ScriptPromise Body::text(ScriptState* scriptState)
{
if (bodyUsed())
return ScriptPromise::reject(scriptState, V8ThrowException::createTypeError(scriptState->isolate(), "Already read"));
// See above comment.
if (!scriptState->executionContext())
return ScriptPromise();
ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
ScriptPromise promise = resolver->promise();
bodyBuffer()->startLoading(scriptState->executionContext(), FetchDataLoader::createLoaderAsString(), new BodyTextConsumer(resolver));
return promise;
}
ScriptPromise Body::arrayBuffer(ScriptState* scriptState)
{
if (bodyUsed())
return ScriptPromise::reject(scriptState, V8ThrowException::createTypeError(scriptState->isolate(), "Already read"));
// When the main thread sends a V8::TerminateExecution() signal to a worker
// thread, any V8 API on the worker thread starts returning an empty
// handle. This can happen in Body::readAsync. To avoid the situation, we
// first check the ExecutionContext and return immediately if it's already
// gone (which means that the V8::TerminateExecution() signal has been sent
// to this worker thread).
if (!scriptState->executionContext())
return ScriptPromise();
ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
ScriptPromise promise = resolver->promise();
bodyBuffer()->startLoading(scriptState->executionContext(), FetchDataLoader::createLoaderAsArrayBuffer(), new BodyArrayBufferConsumer(resolver));
return promise;
}
FetchRequestData* Request::passRequestData()
{
ASSERT(!bodyUsed());
lockBody(PassBody);
return m_request->pass();
}