Keep track of network error in ProxyRetryInfo.

net/proxy/proxy_list.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/proxy/proxy_list.h"
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/strings/string_tokenizer.h"
 #include "base/time/time.h"
@@ skipping 128 matching lines @@
 }
 
 base::ListValue* ProxyList::ToValue() const {
   base::ListValue* list = new base::ListValue();
   for (size_t i = 0; i < proxies_.size(); ++i)
     list->AppendString(proxies_[i].ToURI());
   return list;
 }
 
 bool ProxyList::Fallback(ProxyRetryInfoMap* proxy_retry_info,
+                         const int net_error,
                          const BoundNetLog& net_log) {
 
   // TODO(eroman): It would be good if instead of removing failed proxies
   // from the list, we simply annotated them with the error code they failed
   // with. Of course, ProxyService::ReconsiderProxyAfterError() would need to
   // be given this information by the network transaction.
   //
   // The advantage of this approach is when the network transaction
   // fails, we could output the full list of proxies that were attempted, and
   // why each one of those failed (as opposed to just the last failure).
   //
   // And also, before failing the transaction wholesale, we could go back and
   // retry the "bad proxies" which we never tried to begin with.
   // (RemoveBadProxies would annotate them as 'expected bad' rather then delete
   // them from the list, so we would know what they were).
 
   if (proxies_.empty()) {
     NOTREACHED();
     return false;
   }
   // By default, proxies are not retried for 5 minutes.
   UpdateRetryInfoOnFallback(proxy_retry_info,
                             TimeDelta::FromMinutes(5),
                             true,
                             ProxyServer(),
+                            net_error,
                             net_log);
 
   // Remove this proxy from our list.
   proxies_.erase(proxies_.begin());
   return !proxies_.empty();
 }
 
 void ProxyList::AddProxyToRetryList(ProxyRetryInfoMap* proxy_retry_info,
                                     base::TimeDelta retry_delay,
                                     bool try_while_bad,
                                     const ProxyServer& proxy_to_retry,
+                                    const int net_error,
                                     const BoundNetLog& net_log) const {
   // Mark this proxy as bad.
   std::string proxy_key = proxy_to_retry.ToURI();
   ProxyRetryInfoMap::iterator iter = proxy_retry_info->find(proxy_key);
   if (iter != proxy_retry_info->end()) {
     // TODO(nsylvain): This is not the first time we get this. We should
     // double the retry time. Bug 997660.
     iter->second.bad_until = TimeTicks::Now() + iter->second.current_delay;
   } else {
     ProxyRetryInfo retry_info;
     retry_info.current_delay = retry_delay;
     retry_info.bad_until = TimeTicks().Now() + retry_info.current_delay;
     retry_info.try_while_bad = try_while_bad;
+    retry_info.net_error = net_error;
     (*proxy_retry_info)[proxy_key] = retry_info;
   }
   net_log.AddEvent(NetLog::TYPE_PROXY_LIST_FALLBACK,
                    NetLog::StringCallback("bad_proxy", &proxy_key));
 }
 
 void ProxyList::UpdateRetryInfoOnFallback(
     ProxyRetryInfoMap* proxy_retry_info,
     base::TimeDelta retry_delay,
     bool reconsider,
     const ProxyServer& another_proxy_to_bypass,
+    const int net_error,
     const BoundNetLog& net_log) const {
   DCHECK(retry_delay != base::TimeDelta());
 
   if (proxies_.empty()) {
     NOTREACHED();
     return;
   }
 
   if (!proxies_[0].is_direct()) {
-    AddProxyToRetryList(proxy_retry_info, retry_delay, reconsider, proxies_[0],
+    AddProxyToRetryList(proxy_retry_info,
+                        retry_delay,
+                        reconsider,
+                        proxies_[0],
+                        net_error,
                         net_log);
 
     // If an additional proxy to bypass is specified, add it to the retry map
     // as well.
     if (another_proxy_to_bypass.is_valid()) {
-      AddProxyToRetryList(proxy_retry_info, retry_delay, reconsider,
-                          another_proxy_to_bypass, net_log);
+      AddProxyToRetryList(proxy_retry_info,
+                          retry_delay,
+                          reconsider,
+                          another_proxy_to_bypass,
+                          net_error,
+                          net_log);
     }
   }
 }
 
 }  // namespace net