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// Copyright (c) 2011 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/http/http_basic_stream.h"
#include "base/format_macros.h"
#include "base/metrics/histogram.h"
#include "base/stringprintf.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "net/http/http_request_headers.h"
#include "net/http/http_request_info.h"
#include "net/http/http_stream_parser.h"
#include "net/http/http_util.h"
#include "net/socket/client_socket_handle.h"
#include "net/socket/client_socket_pool_base.h"
namespace net {
HttpBasicStream::HttpBasicStream(ClientSocketHandle* connection,
HttpStreamParser* parser,
bool using_proxy)
: read_buf_(new GrowableIOBuffer()),
parser_(parser),
connection_(connection),
using_proxy_(using_proxy),
request_info_(NULL),
response_(NULL),
bytes_read_offset_(0) {
}
HttpBasicStream::~HttpBasicStream() {}
int HttpBasicStream::InitializeStream(const HttpRequestInfo* request_info,
const BoundNetLog& net_log,
CompletionCallback* callback) {
DCHECK(!parser_.get());
request_info_ = request_info;
parser_.reset(new HttpStreamParser(connection_.get(), request_info,
read_buf_, net_log));
bytes_read_offset_ = connection_->socket()->NumBytesRead();
return OK;
}
int HttpBasicStream::SendRequest(const HttpRequestHeaders& headers,
UploadDataStream* request_body,
HttpResponseInfo* response,
CompletionCallback* callback) {
DCHECK(parser_.get());
DCHECK(request_info_);
const std::string path = using_proxy_ ?
HttpUtil::SpecForRequest(request_info_->url) :
HttpUtil::PathForRequest(request_info_->url);
request_line_ = base::StringPrintf("%s %s HTTP/1.1\r\n",
request_info_->method.c_str(),
path.c_str());
response_ = response;
return parser_->SendRequest(request_line_, headers, request_body, response,
callback);
}
uint64 HttpBasicStream::GetUploadProgress() const {
return parser_->GetUploadProgress();
}
int HttpBasicStream::ReadResponseHeaders(CompletionCallback* callback) {
return parser_->ReadResponseHeaders(callback);
}
const HttpResponseInfo* HttpBasicStream::GetResponseInfo() const {
return parser_->GetResponseInfo();
}
int HttpBasicStream::ReadResponseBody(IOBuffer* buf, int buf_len,
CompletionCallback* callback) {
return parser_->ReadResponseBody(buf, buf_len, callback);
}
void HttpBasicStream::Close(bool not_reusable) {
parser_->Close(not_reusable);
}
HttpStream* HttpBasicStream::RenewStreamForAuth() {
DCHECK(IsResponseBodyComplete());
DCHECK(!IsMoreDataBuffered());
parser_.reset();
return new HttpBasicStream(connection_.release(), NULL, using_proxy_);
}
bool HttpBasicStream::IsResponseBodyComplete() const {
return parser_->IsResponseBodyComplete();
}
bool HttpBasicStream::CanFindEndOfResponse() const {
return parser_->CanFindEndOfResponse();
}
bool HttpBasicStream::IsMoreDataBuffered() const {
return parser_->IsMoreDataBuffered();
}
bool HttpBasicStream::IsConnectionReused() const {
return parser_->IsConnectionReused();
}
void HttpBasicStream::SetConnectionReused() {
parser_->SetConnectionReused();
}
bool HttpBasicStream::IsConnectionReusable() const {
return parser_->IsConnectionReusable();
}
void HttpBasicStream::GetSSLInfo(SSLInfo* ssl_info) {
parser_->GetSSLInfo(ssl_info);
}
void HttpBasicStream::GetSSLCertRequestInfo(
SSLCertRequestInfo* cert_request_info) {
parser_->GetSSLCertRequestInfo(cert_request_info);
}
bool HttpBasicStream::IsSpdyHttpStream() const {
return false;
}
void HttpBasicStream::LogNumRttVsBytesMetrics() const {
int socket_reuse_policy = GetSocketReusePolicy();
if (socket_reuse_policy > 2 || socket_reuse_policy < 0) {
return;
}
int64 total_bytes_read = connection_->socket()->NumBytesRead();
int64 bytes_received = total_bytes_read - bytes_read_offset_;
int64 num_kb = bytes_received / 1024;
double rtt = connection_->socket()->GetConnectTimeMicros().ToInternalValue();
rtt /= 1000.0;
if (num_kb < 1024 && rtt > 0) { // Ignore responses > 1MB
base::TimeDelta duration = base::Time::Now() -
response_->request_time;
double num_rtt = static_cast<double>(duration.InMilliseconds()) / rtt;
int64 num_rtt_scaled = (4 * num_rtt);
static const char* const kGroups[] = {
"warmest_socket", "warm_socket", "last_accessed_socket"
};
int bucket = (num_kb / 5) * 5;
const std::string histogram(StringPrintf("Net.Num_RTT_vs_KB_%s_%dKB",
kGroups[socket_reuse_policy],
bucket));
base::Histogram* counter = base::Histogram::FactoryGet(
histogram, 0, 1000, 2, base::Histogram::kUmaTargetedHistogramFlag);
DCHECK_EQ(histogram, counter->histogram_name());
counter->Add(num_rtt_scaled);
VLOG(2) << StringPrintf("%s\nrtt = %f\tnum_rtt = %f\t"
"num_kb = %" PRId64 "\t"
"total bytes = %" PRId64 "\t"
"histogram = %s",
request_line_.data(),
rtt, num_rtt, num_kb, total_bytes_read,
histogram.data());
}
}
} // namespace net
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