net: disable SSL compression

net/socket/ssl_client_socket_nss.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.
 
 // This file includes code SSLClientSocketNSS::DoVerifyCertComplete() derived
 // from AuthCertificateCallback() in
 // mozilla/security/manager/ssl/src/nsNSSCallbacks.cpp.
 
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
@@ skipping 3091 matching lines @@
   // Support RFC 5077
   rv = SSL_OptionSet(nss_fd_, SSL_ENABLE_SESSION_TICKETS, PR_TRUE);
   if (rv != SECSuccess) {
     LogFailedNSSFunction(
         net_log_, "SSL_OptionSet", "SSL_ENABLE_SESSION_TICKETS");
   }
 #else
   #error "You need to install NSS-3.12 or later to build chromium"
 #endif
 
-#ifdef SSL_ENABLE_DEFLATE
-  // Some web servers have been found to break if TLS is used *or* if DEFLATE
-  // is advertised. Thus, if TLS is disabled (probably because we are doing
-  // SSLv3 fallback), we disable DEFLATE also.
-  // See http://crbug.com/31628
-  rv = SSL_OptionSet(nss_fd_, SSL_ENABLE_DEFLATE,
-                     ssl_config_.version_max >= SSL_PROTOCOL_VERSION_TLS1);
-  if (rv != SECSuccess)
-    LogFailedNSSFunction(net_log_, "SSL_OptionSet", "SSL_ENABLE_DEFLATE");
-#endif
-
 #ifdef SSL_ENABLE_FALSE_START
   rv = SSL_OptionSet(nss_fd_, SSL_ENABLE_FALSE_START,
                      ssl_config_.false_start_enabled);
   if (rv != SECSuccess)
     LogFailedNSSFunction(net_log_, "SSL_OptionSet", "SSL_ENABLE_FALSE_START");
 #endif
 
 #ifdef SSL_ENABLE_RENEGOTIATION
   // We allow servers to request renegotiation. Since we're a client,
   // prohibiting this is rather a waste of time. Only servers are in a
@@ skipping 370 matching lines @@
   EnsureThreadIdAssigned();
   base::AutoLock auto_lock(lock_);
   return valid_thread_id_ == base::PlatformThread::CurrentId();
 }
 
 ServerBoundCertService* SSLClientSocketNSS::GetServerBoundCertService() const {
   return server_bound_cert_service_;
 }
 
 }  // namespace net