1 files changed, 94 insertions, 0 deletions
diff --git a/netwerk/base/TCPFastOpenLayer.h b/netwerk/base/TCPFastOpenLayer.h
new file mode 100644
index 0000000000..597615cabe
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+++ b/netwerk/base/TCPFastOpenLayer.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef TCPFastOpenLayer_h__
+#define TCPFastOpenLayer_h__
+
+#include "prerror.h"
+
+namespace mozilla {
+namespace net {
+
+/**
+ * This layer must be placed just above PR-tcp socket, i.e. it must be under
+ * nss layer.
+ * At the beginning of TCPFastOpenLayer.cpp there is explanation what this
+ * layer do.
+ **/
+
+typedef enum {
+  TFO_NOT_SET,   // This is only as a control.
+                 // A connection not using TFO will have the TFO state set upon
+                 // connection creation (in nsHalfOpenSocket::SetupConn).
+                 // A connection using TFO will have the TFO state set after
+                 // the connection is established or canceled.
+  TFO_UNKNOWN,   // This is before the primary socket is built, i.e. before
+                 // TCPFastOpenFinish is called.
+  TFO_DISABLED,  // tfo is disabled because of a tfo error on a previous
+                 // connection to the host (i.e. !mEnt->mUseFastOpen).
+                 // If TFO is not supported by the OS, it is disabled by
+                 // the pref or too many consecutive errors occurred, this value
+                 // is not reported. This is set before StartFastOpen is called.
+  TFO_DISABLED_CONNECT,  // Connection is using CONNECT. This is set before
+                         // StartFastOpen is called.
+  // The following 3 are set just after TCPFastOpenFinish.
+  TFO_NOT_TRIED,  // For some reason TCPFastOpenLayer does not have any data to
+                  // send with the syn packet. This should never happen.
+  TFO_TRIED,      // TCP has sent a TFO cookie request.
+  TFO_DATA_SENT,  // On Linux, TCP has send data as well. (On Linux we do not
+                  // know whether data has been accepted).
+                  // On Windows, TCP has send data or only a TFO cookie request
+                  // and the data or TFO cookie has been accepted by the server.
+  // The following value is only used on windows and is set after
+  // PR_ConnectContinue. That is the point when we know if TFO data was been
+  // accepted.
+  TFO_DATA_COOKIE_NOT_ACCEPTED,  // This is only on Windows. TFO data or TFO
+                                 // cookie request has not been accepted.
+  // The following 3 are set during socket error recover
+  // (nsSocketTransport::RecoverFromError).
+  TFO_FAILED_CONNECTION_REFUSED,
+  TFO_FAILED_NET_TIMEOUT,
+  TFO_FAILED_UNKNOW_ERROR,
+  // The following 4 are set when backup connection finishes before the primary
+  // connection.
+  TFO_FAILED_BACKUP_CONNECTION_TFO_NOT_TRIED,
+  TFO_FAILED_BACKUP_CONNECTION_TFO_TRIED,
+  TFO_FAILED_BACKUP_CONNECTION_TFO_DATA_SENT,
+  TFO_FAILED_BACKUP_CONNECTION_TFO_DATA_COOKIE_NOT_ACCEPTED,
+  // The following 4 are set when the recovery connection fails as well.
+  TFO_FAILED_CONNECTION_REFUSED_NO_TFO_FAILED_TOO,
+  TFO_FAILED_NET_TIMEOUT_NO_TFO_FAILED_TOO,
+  TFO_FAILED_UNKNOW_ERROR_NO_TFO_FAILED_TOO,
+  TFO_FAILED_BACKUP_CONNECTION_NO_TFO_FAILED_TOO,
+  TFO_BACKUP_CONN,  // This is a backup conn, for a halfOpenSock that was used
+                    // TFO.
+  TFO_INIT_FAILED,  // nsHalfOpenSocket::SetupConn failed.
+  TFO_UNKNOWN_RESOLVING,  // There is a high number of TFO_UNKNOWN state
+                          // reported. Let's split them depending on the socket
+                          // transport state: TFO_UNKNOWN_RESOLVING,
+                          // TFO_UNKNOWN_RESOLVED, TFO_UNKNOWN_CONNECTING and
+                          // TFO_UNKNOWN_CONNECTED..
+  TFO_UNKNOWN_RESOLVED,
+  TFO_UNKNOWN_CONNECTING,
+  TFO_UNKNOWN_CONNECTED,
+  TFO_FAILED,
+  TFO_HTTP  // TFO is disabled for non-secure connections.
+} TFOResult;
+
+nsresult AttachTCPFastOpenIOLayer(PRFileDesc* fd);
+
+// Get the result of TCP Fast Open.
+void TCPFastOpenFinish(PRFileDesc* fd, PRErrorCode& err,
+                       bool& fastOpenNotSupported, uint8_t& tfoStatus);
+
+int32_t TCPFastOpenGetBufferSizeLeft(PRFileDesc* fd);
+
+bool TCPFastOpenGetCurrentBufferSize(PRFileDesc* fd);
+bool TCPFastOpenFlushBuffer(PRFileDesc* fd);
+}  // namespace net
+}  // namespace mozilla
+
+#endif  // TCPFastOpenLayer_h__