Remove mojo network service.

mojo/services/network/url_loader_impl.cc

Index: mojo/services/network/url_loader_impl.cc
diff --git a/mojo/services/network/url_loader_impl.cc b/mojo/services/network/url_loader_impl.cc
deleted file mode 100644
index b6db54e7550966d2ffb4b3c4fe9c8922caf0a684..0000000000000000000000000000000000000000
--- a/mojo/services/network/url_loader_impl.cc
+++ /dev/null
@@ -1,426 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "mojo/services/network/url_loader_impl.h"
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <utility>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "mojo/common/common_type_converters.h"
-#include "mojo/common/url_type_converters.h"
-#include "mojo/services/network/net_adapters.h"
-#include "mojo/services/network/network_context.h"
-#include "net/base/elements_upload_data_stream.h"
-#include "net/base/io_buffer.h"
-#include "net/base/load_flags.h"
-#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
-#include "net/base/upload_bytes_element_reader.h"
-#include "net/http/http_response_headers.h"
-#include "net/url_request/redirect_info.h"
-#include "net/url_request/url_request_context.h"
-
-namespace mojo {
-namespace {
-
-GURL GetSiteForURL(const GURL& url) {
-  // If the url has a host, then determine the site.
-  if (url.has_host()) {
-    // Only keep the scheme and registered domain as given by GetOrigin.  This
-    // may also include a port, which we need to drop.
-    GURL site = url.GetOrigin();
-
-    // Remove port, if any.
-    if (site.has_port()) {
-      GURL::Replacements rep;
-      rep.ClearPort();
-      site = site.ReplaceComponents(rep);
-    }
-
-    // If this URL has a registered domain, we only want to remember that part.
-    std::string domain = net::registry_controlled_domains::GetDomainAndRegistry(
-        url, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
-    if (!domain.empty()) {
-      GURL::Replacements rep;
-      rep.SetHostStr(domain);
-      site = site.ReplaceComponents(rep);
-    }
-    return site;
-  }
-
-  // If there is no host but there is a scheme, return the scheme.
-  // This is useful for cases like file URLs.
-  if (url.has_scheme())
-    return GURL(url.scheme() + ":");
-
-  // Otherwise the URL should be invalid; return an empty site.
-  DCHECK(!url.is_valid());
-  return GURL();
-}
-
-// Generates an URLResponsePtr from the response state of a net::URLRequest.
-URLResponsePtr MakeURLResponse(const net::URLRequest* url_request) {
-  URLResponsePtr response(URLResponse::New());
-  response->url = String::From(url_request->url());
-  response->site = GetSiteForURL(url_request->url()).spec();
-
-  const net::HttpResponseHeaders* headers = url_request->response_headers();
-  if (headers) {
-    response->status_code = headers->response_code();
-    response->status_line = headers->GetStatusLine();
-
-    response->headers = Array<HttpHeaderPtr>::New(0);
-    std::vector<String> header_lines;
-    size_t iter = 0;
-    std::string name, value;
-    while (headers->EnumerateHeaderLines(&iter, &name, &value)) {
-      HttpHeaderPtr header = HttpHeader::New();
-      header->name = name;
-      header->value = value;
-      response->headers.push_back(std::move(header));
-    }
-  }
-
-  std::string mime_type;
-  url_request->GetMimeType(&mime_type);
-  response->mime_type = mime_type;
-
-  std::string charset;
-  url_request->GetCharset(&charset);
-  response->charset = charset;
-
-  return response;
-}
-
-// Reads the request body upload data from a DataPipe.
-class UploadDataPipeElementReader : public net::UploadElementReader {
- public:
-  UploadDataPipeElementReader(ScopedDataPipeConsumerHandle pipe)
-      : pipe_(std::move(pipe)), num_bytes_(0) {}
-  ~UploadDataPipeElementReader() override {}
-
-  // UploadElementReader overrides:
-  int Init(const net::CompletionCallback& callback) override {
-    offset_ = 0;
-    ReadDataRaw(pipe_.get(), nullptr, &num_bytes_, MOJO_READ_DATA_FLAG_QUERY);
-    return net::OK;
-  }
-  uint64_t GetContentLength() const override { return num_bytes_; }
-  uint64_t BytesRemaining() const override { return num_bytes_ - offset_; }
-  bool IsInMemory() const override { return false; }
-  int Read(net::IOBuffer* buf,
-           int buf_length,
-           const net::CompletionCallback& callback) override {
-    uint32_t bytes_read =
-        std::min(static_cast<uint32_t>(BytesRemaining()),
-                 static_cast<uint32_t>(buf_length));
-    if (bytes_read > 0) {
-      ReadDataRaw(pipe_.get(), buf->data(), &bytes_read,
-                  MOJO_READ_DATA_FLAG_NONE);
-    }
-
-    offset_ += bytes_read;
-    return bytes_read;
-  }
-
- private:
-  ScopedDataPipeConsumerHandle pipe_;
-  uint32_t num_bytes_;
-  uint32_t offset_;
-
-  DISALLOW_COPY_AND_ASSIGN(UploadDataPipeElementReader);
-};
-
-}  // namespace
-
-URLLoaderImpl::URLLoaderImpl(NetworkContext* context,
-                             InterfaceRequest<URLLoader> request,
-                             scoped_ptr<mojo::MessageLoopRef> app_refcount)
-    : context_(context),
-      response_body_buffer_size_(0),
-      response_body_bytes_read_(0),
-      auto_follow_redirects_(true),
-      connected_(true),
-      binding_(this, std::move(request)),
-      app_refcount_(std::move(app_refcount)),
-      weak_ptr_factory_(this) {
-  binding_.set_connection_error_handler([this]() { OnConnectionError(); });
-  context_->RegisterURLLoader(this);
-}
-
-URLLoaderImpl::~URLLoaderImpl() {
-  context_->DeregisterURLLoader(this);
-}
-
-void URLLoaderImpl::Cleanup() {
-  // The associated network context is going away and we have to destroy
-  // net::URLRequest hold by this loader.
-  delete this;
-}
-
-void URLLoaderImpl::Start(URLRequestPtr request,
-                          const Callback<void(URLResponsePtr)>& callback) {
-  if (url_request_) {
-    SendError(net::ERR_UNEXPECTED, callback);
-    return;
-  }
-
-  if (!request) {
-    SendError(net::ERR_INVALID_ARGUMENT, callback);
-    return;
-  }
-
-  url_request_ = context_->url_request_context()->CreateRequest(
-      GURL(request->url.get()), net::DEFAULT_PRIORITY, this);
-  url_request_->set_method(request->method);
-  // TODO(jam): need to specify this policy.
-  url_request_->set_referrer_policy(
-      net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE);
-  if (request->headers) {
-    net::HttpRequestHeaders headers;
-    for (size_t i = 0; i < request->headers.size(); ++i) {
-      base::StringPiece header =
-          request->headers[i]->name.To<base::StringPiece>();
-      base::StringPiece value =
-          request->headers[i]->value.To<base::StringPiece>();
-      if (header == net::HttpRequestHeaders::kReferer) {
-        url_request_->SetReferrer(value.as_string());
-      } else {
-        headers.SetHeader(header, value);
-      }
-    }
-    url_request_->SetExtraRequestHeaders(headers);
-  }
-  if (request->body) {
-    std::vector<scoped_ptr<net::UploadElementReader>> element_readers;
-    for (size_t i = 0; i < request->body.size(); ++i) {
-      element_readers.push_back(make_scoped_ptr(
-          new UploadDataPipeElementReader(std::move(request->body[i]))));
-    }
-    url_request_->set_upload(make_scoped_ptr<net::UploadDataStream>(
-        new net::ElementsUploadDataStream(std::move(element_readers), 0)));
-  }
-  if (request->bypass_cache)
-    url_request_->SetLoadFlags(net::LOAD_BYPASS_CACHE);
-
-  callback_ = callback;
-  response_body_buffer_size_ = request->response_body_buffer_size;
-  auto_follow_redirects_ = request->auto_follow_redirects;
-
-  url_request_->Start();
-}
-
-void URLLoaderImpl::FollowRedirect(
-    const Callback<void(URLResponsePtr)>& callback) {
-  if (!url_request_) {
-    SendError(net::ERR_UNEXPECTED, callback);
-    return;
-  }
-
-  if (auto_follow_redirects_) {
-    DLOG(ERROR) << "Spurious call to FollowRedirect";
-    SendError(net::ERR_UNEXPECTED, callback);
-    return;
-  }
-
-  // TODO(darin): Verify that it makes sense to call FollowDeferredRedirect.
-  url_request_->FollowDeferredRedirect();
-  callback_ = callback;
-}
-
-void URLLoaderImpl::QueryStatus(
-    const Callback<void(URLLoaderStatusPtr)>& callback) {
-  URLLoaderStatusPtr status(URLLoaderStatus::New());
-  status->bytes_read = response_body_bytes_read_;
-  if (url_request_) {
-    status->is_loading = url_request_->is_pending();
-    if (!url_request_->status().is_success())
-      status->error = MakeNetworkError(url_request_->status().error());
-    if (url_request_->response_info().headers) {
-      status->content_length =
-          url_request_->response_info().headers->GetContentLength();
-    }
-  } else {
-    status->is_loading = false;
-  }
-  // TODO(darin): Populate more status fields.
-  callback.Run(std::move(status));
-}
-
-void URLLoaderImpl::OnConnectionError() {
-  connected_ = false;
-  DeleteIfNeeded();
-}
-
-void URLLoaderImpl::OnReceivedRedirect(net::URLRequest* url_request,
-                                       const net::RedirectInfo& redirect_info,
-                                       bool* defer_redirect) {
-  DCHECK(url_request == url_request_.get());
-  DCHECK(url_request->status().is_success());
-
-  if (auto_follow_redirects_)
-    return;
-
-  // Send the redirect response to the client, allowing them to inspect it and
-  // optionally follow the redirect.
-  *defer_redirect = true;
-
-  URLResponsePtr response = MakeURLResponse(url_request);
-  response->redirect_method = redirect_info.new_method;
-  response->redirect_url = String::From(redirect_info.new_url);
-  response->redirect_referrer = redirect_info.new_referrer;
-
-  SendResponse(std::move(response));
-
-  DeleteIfNeeded();
-}
-
-void URLLoaderImpl::OnResponseStarted(net::URLRequest* url_request) {
-  DCHECK(url_request == url_request_.get());
-
-  if (!url_request->status().is_success()) {
-    SendError(url_request->status().error(), callback_);
-    callback_ = Callback<void(URLResponsePtr)>();
-    DeleteIfNeeded();
-    return;
-  }
-
-  // TODO(darin): Add support for optional MIME sniffing.
-
-  DataPipe data_pipe;
-  // TODO(darin): Honor given buffer size.
-
-  URLResponsePtr response = MakeURLResponse(url_request);
-  response->body = std::move(data_pipe.consumer_handle);
-  response_body_stream_ = std::move(data_pipe.producer_handle);
-  ListenForPeerClosed();
-
-  SendResponse(std::move(response));
-
-  // Start reading...
-  ReadMore();
-}
-
-void URLLoaderImpl::OnReadCompleted(net::URLRequest* url_request,
-                                    int bytes_read) {
-  DCHECK(url_request == url_request_.get());
-
-  if (url_request->status().is_success()) {
-    DidRead(static_cast<uint32_t>(bytes_read), false);
-  } else {
-    handle_watcher_.Stop();
-    pending_write_ = nullptr;  // This closes the data pipe.
-    DeleteIfNeeded();
-    return;
-  }
-}
-
-void URLLoaderImpl::SendError(
-    int error_code,
-    const Callback<void(URLResponsePtr)>& callback) {
-  URLResponsePtr response(URLResponse::New());
-  if (url_request_)
-    response->url = String::From(url_request_->url());
-  response->error = MakeNetworkError(error_code);
-  callback.Run(std::move(response));
-}
-
-void URLLoaderImpl::SendResponse(URLResponsePtr response) {
-  Callback<void(URLResponsePtr)> callback;
-  std::swap(callback_, callback);
-  callback.Run(std::move(response));
-}
-
-void URLLoaderImpl::OnResponseBodyStreamReady(MojoResult result) {
-  // TODO(darin): Handle a bad |result| value.
-
-  // Continue watching the handle in case the peer is closed.
-  ListenForPeerClosed();
-  ReadMore();
-}
-
-void URLLoaderImpl::OnResponseBodyStreamClosed(MojoResult result) {
-  url_request_.reset();
-  response_body_stream_.reset();
-  pending_write_ = nullptr;
-  DeleteIfNeeded();
-}
-
-void URLLoaderImpl::ReadMore() {
-  DCHECK(!pending_write_.get());
-
-  uint32_t num_bytes;
-  MojoResult result = NetToMojoPendingBuffer::BeginWrite(
-      &response_body_stream_, &pending_write_, &num_bytes);
-
-  if (result == MOJO_RESULT_SHOULD_WAIT) {
-    // The pipe is full. We need to wait for it to have more space.
-    handle_watcher_.Start(response_body_stream_.get(),
-                          MOJO_HANDLE_SIGNAL_WRITABLE, MOJO_DEADLINE_INDEFINITE,
-                          base::Bind(&URLLoaderImpl::OnResponseBodyStreamReady,
-                                     base::Unretained(this)));
-    return;
-  } else if (result != MOJO_RESULT_OK) {
-    // The response body stream is in a bad state. Bail.
-    // TODO(darin): How should this be communicated to our client?
-    handle_watcher_.Stop();
-    response_body_stream_.reset();
-    DeleteIfNeeded();
-    return;
-  }
-  CHECK_GT(static_cast<uint32_t>(std::numeric_limits<int>::max()), num_bytes);
-
-  scoped_refptr<net::IOBuffer> buf(new NetToMojoIOBuffer(pending_write_.get()));
-
-  int bytes_read;
-  url_request_->Read(buf.get(), static_cast<int>(num_bytes), &bytes_read);
-  if (url_request_->status().is_io_pending()) {
-    // Wait for OnReadCompleted.
-  } else if (url_request_->status().is_success() && bytes_read > 0) {
-    DidRead(static_cast<uint32_t>(bytes_read), true);
-  } else {
-    handle_watcher_.Stop();
-    pending_write_->Complete(0);
-    pending_write_ = nullptr;  // This closes the data pipe.
-    DeleteIfNeeded();
-    return;
-  }
-}
-
-void URLLoaderImpl::DidRead(uint32_t num_bytes, bool completed_synchronously) {
-  DCHECK(url_request_->status().is_success());
-
-  response_body_bytes_read_ += num_bytes;
-  response_body_stream_ = pending_write_->Complete(num_bytes);
-  pending_write_ = nullptr;
-
-  if (completed_synchronously) {
-    base::MessageLoop::current()->PostTask(
-        FROM_HERE,
-        base::Bind(&URLLoaderImpl::ReadMore, weak_ptr_factory_.GetWeakPtr()));
-  } else {
-    ReadMore();
-  }
-}
-
-void URLLoaderImpl::DeleteIfNeeded() {
-  bool has_data_pipe = pending_write_.get() || response_body_stream_.is_valid();
-  if (!connected_ && !has_data_pipe)
-    delete this;
-}
-
-void URLLoaderImpl::ListenForPeerClosed() {
-  handle_watcher_.Start(response_body_stream_.get(),
-                        MOJO_HANDLE_SIGNAL_PEER_CLOSED,
-                        MOJO_DEADLINE_INDEFINITE,
-                        base::Bind(&URLLoaderImpl::OnResponseBodyStreamClosed,
-                                   base::Unretained(this)));
-}
-
-}  // namespace mojo