Land Recent QUIC changes.

net/quic/crypto/source_address_token.cc

 // Copyright (c) 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/crypto/source_address_token.h"
 
 #include <vector>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 
 using std::string;
 using std::vector;
 
 namespace net {
 
 SourceAddressToken::SourceAddressToken() {
 }
 
 SourceAddressToken::~SourceAddressToken() {
 }
 
 string SourceAddressToken::SerializeAsString() const {
-  return ip_ + " " + base::Int64ToString(timestamp_);
+  string out;
+  out.push_back(ip_.size());
+  out.append(ip_);
+  string time_str = base::Int64ToString(timestamp_);
+  out.push_back(time_str.size());
+  out.append(time_str);
+  return out;
 }
 
 bool SourceAddressToken::ParseFromArray(const char* plaintext,
                                         size_t plaintext_length) {
-  string data(plaintext, plaintext_length);
-  vector<string> results;
-  base::SplitString(data, ' ', &results);
-  if (results.size() < 2) {
+  if (plaintext_length == 0) {
+    return false;
+  }
+  size_t ip_len = plaintext[0];
+  if (plaintext_length <= 1 + ip_len) {
+    return false;
+  }
+  size_t time_len = plaintext[1 + ip_len];
+  if (plaintext_length != 1 + ip_len + 1 + time_len) {
     return false;
   }
 
+  string time_str(&plaintext[1 + ip_len + 1], time_len);
   int64 timestamp;
-  if (!base::StringToInt64(results[1], &timestamp)) {
+  if (!base::StringToInt64(time_str, &timestamp)) {
     return false;
   }
 
-  ip_ = results[0];
+  ip_.assign(&plaintext[1], ip_len);
   timestamp_ = timestamp;
   return true;
 }
 
 }  // namespace net