Revert of Replace StreamListenSocket with StreamSocket in HttpServer.

net/server/http_connection.cc

 // Copyright (c) 2012 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 "net/server/http_connection.h"
 
-#include "base/logging.h"
+#include "net/server/http_server.h"
+#include "net/server/http_server_response_info.h"
 #include "net/server/web_socket.h"
-#include "net/socket/stream_socket.h"
+#include "net/socket/stream_listen_socket.h"
 
 namespace net {
 
-HttpConnection::ReadIOBuffer::ReadIOBuffer()
-    : base_(new GrowableIOBuffer()),
-      max_buffer_size_(kDefaultMaxBufferSize) {
-  SetCapacity(kInitialBufSize);
+int HttpConnection::last_id_ = 0;
+
+void HttpConnection::Send(const std::string& data) {
+  if (!socket_.get())
+    return;
+  socket_->Send(data);
 }
 
-HttpConnection::ReadIOBuffer::~ReadIOBuffer() {
-  data_ = NULL;  // base_ owns data_.
+void HttpConnection::Send(const char* bytes, int len) {
+  if (!socket_.get())
+    return;
+  socket_->Send(bytes, len);
 }
 
-int HttpConnection::ReadIOBuffer::GetCapacity() const {
-  return base_->capacity();
+void HttpConnection::Send(const HttpServerResponseInfo& response) {
+  Send(response.Serialize());
 }
 
-void HttpConnection::ReadIOBuffer::SetCapacity(int capacity) {
-  DCHECK_LE(GetSize(), capacity);
-  base_->SetCapacity(capacity);
-  data_ = base_->data();
-}
-
-bool HttpConnection::ReadIOBuffer::IncreaseCapacity() {
-  if (GetCapacity() >= max_buffer_size_) {
-    LOG(ERROR) << "Too large read data is pending: capacity=" << GetCapacity()
-               << ", max_buffer_size=" << max_buffer_size_
-               << ", read=" << GetSize();
-    return false;
-  }
-
-  int new_capacity = GetCapacity() * kCapacityIncreaseFactor;
-  if (new_capacity > max_buffer_size_)
-    new_capacity = max_buffer_size_;
-  SetCapacity(new_capacity);
-  return true;
-}
-
-char* HttpConnection::ReadIOBuffer::StartOfBuffer() const {
-  return base_->StartOfBuffer();
-}
-
-int HttpConnection::ReadIOBuffer::GetSize() const {
-  return base_->offset();
-}
-
-void HttpConnection::ReadIOBuffer::DidRead(int bytes) {
-  DCHECK_GE(RemainingCapacity(), bytes);
-  base_->set_offset(base_->offset() + bytes);
-  data_ = base_->data();
-}
-
-int HttpConnection::ReadIOBuffer::RemainingCapacity() const {
-  return base_->RemainingCapacity();
-}
-
-void HttpConnection::ReadIOBuffer::DidConsume(int bytes) {
-  int previous_size = GetSize();
-  int unconsumed_size = previous_size - bytes;
-  DCHECK_LE(0, unconsumed_size);
-  if (unconsumed_size > 0) {
-    // Move unconsumed data to the start of buffer.
-    memmove(StartOfBuffer(), StartOfBuffer() + bytes, unconsumed_size);
-  }
-  base_->set_offset(unconsumed_size);
-  data_ = base_->data();
-
-  // If capacity is too big, reduce it.
-  if (GetCapacity() > kMinimumBufSize &&
-      GetCapacity() > previous_size * kCapacityIncreaseFactor) {
-    int new_capacity = GetCapacity() / kCapacityIncreaseFactor;
-    if (new_capacity < kMinimumBufSize)
-      new_capacity = kMinimumBufSize;
-    // realloc() within GrowableIOBuffer::SetCapacity() could move data even
-    // when size is reduced. If unconsumed_size == 0, i.e. no data exists in
-    // the buffer, free internal buffer first to guarantee no data move.
-    if (!unconsumed_size)
-      base_->SetCapacity(0);
-    SetCapacity(new_capacity);
-  }
-}
-
-HttpConnection::QueuedWriteIOBuffer::QueuedWriteIOBuffer()
-    : total_size_(0),
-      max_buffer_size_(kDefaultMaxBufferSize) {
-}
-
-HttpConnection::QueuedWriteIOBuffer::~QueuedWriteIOBuffer() {
-  data_ = NULL;  // pending_data_ owns data_.
-}
-
-bool HttpConnection::QueuedWriteIOBuffer::IsEmpty() const {
-  return pending_data_.empty();
-}
-
-bool HttpConnection::QueuedWriteIOBuffer::Append(const std::string& data) {
-  if (data.empty())
-    return true;
-
-  if (total_size_ + static_cast<int>(data.size()) > max_buffer_size_) {
-    LOG(ERROR) << "Too large write data is pending: size="
-               << total_size_ + data.size()
-               << ", max_buffer_size=" << max_buffer_size_;
-    return false;
-  }
-
-  pending_data_.push(data);
-  total_size_ += data.size();
-
-  // If new data is the first pending data, updates data_.
-  if (pending_data_.size() == 1)
-    data_ = const_cast<char*>(pending_data_.front().data());
-  return true;
-}
-
-void HttpConnection::QueuedWriteIOBuffer::DidConsume(int size) {
-  DCHECK_GE(total_size_, size);
-  DCHECK_GE(GetSizeToWrite(), size);
-  if (size == 0)
-    return;
-
-  if (size < GetSizeToWrite()) {
-    data_ += size;
-  } else {  // size == GetSizeToWrite(). Updates data_ to next pending data.
-    pending_data_.pop();
-    data_ = IsEmpty() ? NULL : const_cast<char*>(pending_data_.front().data());
-  }
-  total_size_ -= size;
-}
-
-int HttpConnection::QueuedWriteIOBuffer::GetSizeToWrite() const {
-  if (IsEmpty()) {
-    DCHECK_EQ(0, total_size_);
-    return 0;
-  }
-  DCHECK_GE(data_, pending_data_.front().data());
-  int consumed = static_cast<int>(data_ - pending_data_.front().data());
-  DCHECK_GT(static_cast<int>(pending_data_.front().size()), consumed);
-  return pending_data_.front().size() - consumed;
-}
-
-HttpConnection::HttpConnection(int id, scoped_ptr<StreamSocket> socket)
-    : id_(id),
-      socket_(socket.Pass()),
-      read_buf_(new ReadIOBuffer()),
-      write_buf_(new QueuedWriteIOBuffer()) {
+HttpConnection::HttpConnection(HttpServer* server,
+                               scoped_ptr<StreamListenSocket> sock)
+    : server_(server),
+      socket_(sock.Pass()) {
+  id_ = last_id_++;
 }
 
 HttpConnection::~HttpConnection() {
+  server_->delegate_->OnClose(id_);
 }
 
-void HttpConnection::SetWebSocket(scoped_ptr<WebSocket> web_socket) {
-  DCHECK(!web_socket_);
-  web_socket_ = web_socket.Pass();
+void HttpConnection::Shift(int num_bytes) {
+  recv_data_ = recv_data_.substr(num_bytes);
 }
 
 }  // namespace net