1 files changed, 73 insertions, 0 deletions
diff --git a/net/base/https_prober.h b/net/base/https_prober.h
new file mode 100644
index 0000000..327fc16
--- /dev/null
+++ b/net/base/https_prober.h
@@ -0,0 +1,73 @@
+// Copyright (c) 2009 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.
+
+#ifndef NET_BASE_HTTPS_PROBER_H_
+#define NET_BASE_HTTPS_PROBER_H_
+
+#include <map>
+#include <set>
+#include <string>
+
+#include "base/singleton.h"
+#include "base/task.h"
+#include "net/url_request/url_request.h"
+
+class URLRequestContext;
+
+namespace net {
+
+// This should be scoped inside HTTPSProber, but VC cannot compile
+// HTTPProber::Delegate when HTTPSProber also inherits from
+// URLRequest::Delegate.
+class HTTPSProberDelegate {
+ public:
+  virtual void ProbeComplete(bool result) = 0;
+};
+
+// HTTPSProber is a singleton object that manages HTTPS probes. A HTTPS probe
+// determines if we can connect to a given host over HTTPS. It's used when
+// transparently upgrading from HTTP to HTTPS (for example, for SPDY).
+class HTTPSProber : public URLRequest::Delegate {
+ public:
+  HTTPSProber() { }
+
+  // HaveProbed returns true if the given host is known to have been probed
+  // since the browser was last started.
+  bool HaveProbed(const std::string& host) const;
+
+  // InFlight returns true iff a probe for the given host is currently active.
+  bool InFlight(const std::string& host) const;
+
+  // ProbeHost starts a new probe for the given host. If the host is known to
+  // have been probed since the browser was started, false is returned and no
+  // other action is taken. If a probe to the given host in currently inflight,
+  // false will be returned, and no other action is taken. Otherwise, a new
+  // probe is started, true is returned and the Delegate will be called with the
+  // results (true means a successful handshake).
+  bool ProbeHost(const std::string& host, URLRequestContext* ctx,
+                 HTTPSProberDelegate* delegate);
+
+  // Implementation of URLRequest::Delegate
+  void OnAuthRequired(URLRequest* request,
+                      net::AuthChallengeInfo* auth_info);
+  void OnSSLCertificateError(URLRequest* request,
+                             int cert_error,
+                             net::X509Certificate* cert);
+  void OnResponseStarted(URLRequest* request);
+  void OnReadCompleted(URLRequest* request, int bytes_read);
+
+ private:
+  void Success(URLRequest* request);
+  void Failure(URLRequest* request);
+  void DoCallback(URLRequest* request, bool result);
+
+  std::map<std::string, HTTPSProberDelegate*> inflight_probes_;
+  std::set<std::string> probed_;
+
+  friend struct DefaultSingletonTraits<HTTPSProber>;
+  DISALLOW_EVIL_CONSTRUCTORS(HTTPSProber);
+};
+
+}  // namespace net
+#endif