Index: net/quic/port_suggester.cc |
diff --git a/net/quic/port_suggester.cc b/net/quic/port_suggester.cc |
deleted file mode 100644 |
index b1dfa484fd54258328fc5b462cf1aadb589f4f88..0000000000000000000000000000000000000000 |
--- a/net/quic/port_suggester.cc |
+++ /dev/null |
@@ -1,49 +0,0 @@ |
-// Copyright 2013 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/quic/port_suggester.h" |
- |
-#include "base/logging.h" |
-#include "net/base/host_port_pair.h" |
- |
-namespace net { |
- |
-PortSuggester::PortSuggester(const HostPortPair& server, uint64 seed) |
- : call_count_(0), |
- previous_suggestion_(-1) { |
- unsigned char hash_bytes[base::kSHA1Length]; |
- base::SHA1HashBytes( |
- reinterpret_cast<const unsigned char*>(server.host().data()), |
- server.host().length(), hash_bytes); |
- static_assert(sizeof(seed_) < sizeof(hash_bytes), "seed larger than hash"); |
- memcpy(&seed_, hash_bytes, sizeof(seed_)); |
- seed_ ^= seed ^ server.port(); |
-} |
- |
-int PortSuggester::SuggestPort(int min, int max) { |
- // Sometimes our suggestion can't be used, so we ensure that if additional |
- // calls are made, then each call (probably) provides a new suggestion. |
- if (++call_count_ > 1) { |
- // Evolve the seed. |
- unsigned char hash_bytes[base::kSHA1Length]; |
- base::SHA1HashBytes(reinterpret_cast<const unsigned char *>(&seed_), |
- sizeof(seed_), hash_bytes); |
- memcpy(&seed_, hash_bytes, sizeof(seed_)); |
- } |
- DCHECK_LE(min, max); |
- DCHECK_GT(min, 0); |
- int range = max - min + 1; |
- // Ports (and hence the extent of the |range|) are generally under 2^16, so |
- // the tiny non-uniformity in the pseudo-random distribution is not |
- // significant. |
- previous_suggestion_ = static_cast<int>(seed_ % range) + min; |
- return previous_suggestion_; |
-} |
- |
-int PortSuggester::previous_suggestion() const { |
- DCHECK_LT(0u, call_count_); |
- return previous_suggestion_; |
-} |
- |
-} // namespace net |