Add SOCKS4 and SOCKS5 fuzzers.

net/socket/socks_client_socket.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/socket/socks_client_socket.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 399 matching lines @@
   bytes_received_ += result;
   if (bytes_received_ < kReadHeaderSize) {
     next_state_ = STATE_HANDSHAKE_READ;
     return OK;
   }
 
   const SOCKS4ServerResponse* response =
       reinterpret_cast<const SOCKS4ServerResponse*>(buffer_.data());
 
   if (response->reserved_null != 0x00) {
-    LOG(ERROR) << "Unknown response from SOCKS server.";
+    DVLOG(1) << "Unknown response from SOCKS server.";
     return ERR_SOCKS_CONNECTION_FAILED;
   }
 
   switch (response->code) {
     case kServerResponseOk:
       completed_handshake_ = true;
       return OK;
     case kServerResponseRejected:
-      LOG(ERROR) << "SOCKS request rejected or failed";
+      DVLOG(1) << "SOCKS request rejected or failed";
       return ERR_SOCKS_CONNECTION_FAILED;
     case kServerResponseNotReachable:
-      LOG(ERROR) << "SOCKS request failed because client is not running "
-                 << "identd (or not reachable from the server)";
+      DVLOG(1) << "SOCKS request failed because client is not running "
+               << "identd (or not reachable from the server)";
       return ERR_SOCKS_CONNECTION_HOST_UNREACHABLE;
     case kServerResponseMismatchedUserId:
-      LOG(ERROR) << "SOCKS request failed because client's identd could "
-                 << "not confirm the user ID string in the request";
+      DVLOG(1) << "SOCKS request failed because client's identd could "
+               << "not confirm the user ID string in the request";
       return ERR_SOCKS_CONNECTION_FAILED;
     default:
-      LOG(ERROR) << "SOCKS server sent unknown response";
+      DVLOG(1) << "SOCKS server sent unknown response";
       return ERR_SOCKS_CONNECTION_FAILED;
   }
 
   // Note: we ignore the last 6 bytes as specified by the SOCKS protocol
 }
 
 int SOCKSClientSocket::GetPeerAddress(IPEndPoint* address) const {
   return transport_->socket()->GetPeerAddress(address);
 }
 
 int SOCKSClientSocket::GetLocalAddress(IPEndPoint* address) const {
   return transport_->socket()->GetLocalAddress(address);
 }
 
 }  // namespace net