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// 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/http/http_server_properties.h"
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "base/strings/stringprintf.h"
#include "net/socket/ssl_client_socket.h"
#include "net/ssl/ssl_config.h"
namespace net {
const char kAlternateProtocolHeader[] = "Alternate-Protocol";
const char kAlternativeServiceHeader[] = "Alt-Svc";
namespace {
// The order of these strings much match the order of the enum definition
// for AlternateProtocol.
const char* const kAlternateProtocolStrings[] = {
"npn-spdy/2",
"npn-spdy/3",
"npn-spdy/3.1",
"npn-h2-14", // HTTP/2 draft-14. Called SPDY4 internally.
"npn-h2",
"quic"};
static_assert(arraysize(kAlternateProtocolStrings) ==
NUM_VALID_ALTERNATE_PROTOCOLS,
"kAlternateProtocolStrings has incorrect size");
} // namespace
void HistogramAlternateProtocolUsage(AlternateProtocolUsage usage) {
UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolUsage", usage,
ALTERNATE_PROTOCOL_USAGE_MAX);
}
void HistogramBrokenAlternateProtocolLocation(
BrokenAlternateProtocolLocation location){
UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolBrokenLocation", location,
BROKEN_ALTERNATE_PROTOCOL_LOCATION_MAX);
}
bool IsAlternateProtocolValid(AlternateProtocol protocol) {
return protocol >= ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION &&
protocol <= ALTERNATE_PROTOCOL_MAXIMUM_VALID_VERSION;
}
const char* AlternateProtocolToString(AlternateProtocol protocol) {
switch (protocol) {
case DEPRECATED_NPN_SPDY_2:
case NPN_SPDY_3:
case NPN_SPDY_3_1:
case NPN_HTTP_2_14:
case NPN_HTTP_2:
case QUIC:
DCHECK(IsAlternateProtocolValid(protocol));
return kAlternateProtocolStrings[
protocol - ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION];
case UNINITIALIZED_ALTERNATE_PROTOCOL:
return "Uninitialized";
}
NOTREACHED();
return "";
}
AlternateProtocol AlternateProtocolFromString(const std::string& str) {
for (int i = ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION;
i <= ALTERNATE_PROTOCOL_MAXIMUM_VALID_VERSION; ++i) {
AlternateProtocol protocol = static_cast<AlternateProtocol>(i);
if (str == AlternateProtocolToString(protocol))
return protocol;
}
return UNINITIALIZED_ALTERNATE_PROTOCOL;
}
AlternateProtocol AlternateProtocolFromNextProto(NextProto next_proto) {
switch (next_proto) {
case kProtoDeprecatedSPDY2:
return DEPRECATED_NPN_SPDY_2;
case kProtoSPDY3:
return NPN_SPDY_3;
case kProtoSPDY31:
return NPN_SPDY_3_1;
case kProtoHTTP2_14:
return NPN_HTTP_2_14;
case kProtoHTTP2:
return NPN_HTTP_2;
case kProtoQUIC1SPDY3:
return QUIC;
case kProtoUnknown:
case kProtoHTTP11:
break;
}
NOTREACHED() << "Invalid NextProto: " << next_proto;
return UNINITIALIZED_ALTERNATE_PROTOCOL;
}
std::string AlternativeService::ToString() const {
return base::StringPrintf("%s %s:%d", AlternateProtocolToString(protocol),
host.c_str(), port);
}
std::string AlternativeServiceInfo::ToString() const {
return base::StringPrintf("%s, p=%f", alternative_service.ToString().c_str(),
probability);
}
// static
void HttpServerProperties::ForceHTTP11(SSLConfig* ssl_config) {
ssl_config->next_protos.clear();
ssl_config->next_protos.push_back(kProtoHTTP11);
}
} // namespace net
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