1 files changed, 126 insertions, 0 deletions
diff --git a/netwerk/protocol/http/ASpdySession.h b/netwerk/protocol/http/ASpdySession.h
new file mode 100644
index 0000000000..ab2dbc722b
--- /dev/null
+++ b/netwerk/protocol/http/ASpdySession.h
@@ -0,0 +1,126 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+
+/* 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 mozilla_net_ASpdySession_h
+#define mozilla_net_ASpdySession_h
+
+#include "nsAHttpTransaction.h"
+#include "prinrval.h"
+#include "nsString.h"
+
+class nsISocketTransport;
+
+namespace mozilla {
+namespace net {
+
+class ASpdySession : public nsAHttpTransaction {
+ public:
+  ASpdySession() = default;
+  virtual ~ASpdySession() = default;
+
+  [[nodiscard]] virtual bool AddStream(nsAHttpTransaction*, int32_t, bool, bool,
+                                       nsIInterfaceRequestor*) = 0;
+  virtual bool CanReuse() = 0;
+  virtual bool RoomForMoreStreams() = 0;
+  virtual PRIntervalTime IdleTime() = 0;
+  virtual uint32_t ReadTimeoutTick(PRIntervalTime now) = 0;
+  virtual void DontReuse() = 0;
+  virtual enum SpdyVersion SpdyVersion() = 0;
+
+  static ASpdySession* NewSpdySession(net::SpdyVersion version,
+                                      nsISocketTransport*, bool);
+
+  virtual bool TestJoinConnection(const nsACString& hostname, int32_t port) = 0;
+  virtual bool JoinConnection(const nsACString& hostname, int32_t port) = 0;
+
+  // MaybeReTunnel() is called by the connection manager when it cannot
+  // dispatch a tunneled transaction. That might be because the tunnels it
+  // expects to see are dead (and we may or may not be able to make more),
+  // or it might just need to wait longer for one of them to become free.
+  //
+  // return true if the session takes back ownership of the transaction from
+  // the connection manager.
+  virtual bool MaybeReTunnel(nsAHttpTransaction*) = 0;
+
+  virtual void PrintDiagnostics(nsCString& log) = 0;
+
+  bool ResponseTimeoutEnabled() const final { return true; }
+
+  virtual void SendPing() = 0;
+
+  const static uint32_t kSendingChunkSize = 4095;
+  const static uint32_t kTCPSendBufferSize = 131072;
+
+  // This is roughly the amount of data a suspended channel will have to
+  // buffer before h2 flow control kicks in.
+  const static uint32_t kInitialRwin = 12 * 1024 * 1024;  // 12MB
+
+  const static uint32_t kDefaultMaxConcurrent = 100;
+
+  // soft errors are errors that terminate a stream without terminating the
+  // connection. In general non-network errors are stream errors as well
+  // as network specific items like cancels.
+  static bool SoftStreamError(nsresult code) {
+    if (NS_SUCCEEDED(code) || code == NS_BASE_STREAM_WOULD_BLOCK) {
+      return false;
+    }
+
+    // this could go either way, but because there are network instances of
+    // it being a hard error we should consider it hard.
+    if (code == NS_ERROR_FAILURE || code == NS_ERROR_OUT_OF_MEMORY) {
+      return false;
+    }
+
+    if (NS_ERROR_GET_MODULE(code) != NS_ERROR_MODULE_NETWORK) {
+      return true;
+    }
+
+    // these are network specific soft errors
+    return (code == NS_BASE_STREAM_CLOSED || code == NS_BINDING_FAILED ||
+            code == NS_BINDING_ABORTED || code == NS_BINDING_REDIRECTED ||
+            code == NS_ERROR_INVALID_CONTENT_ENCODING ||
+            code == NS_BINDING_RETARGETED ||
+            code == NS_ERROR_CORRUPTED_CONTENT);
+  }
+
+  virtual void SetCleanShutdown(bool) = 0;
+  virtual bool CanAcceptWebsocket() = 0;
+};
+
+typedef bool (*ALPNCallback)(nsISupports*);  // nsISSLSocketControl is typical
+
+// this is essentially a single instantiation as a member of nsHttpHandler.
+// It could be all static except using static ctors of XPCOM objects is a
+// bad idea.
+class SpdyInformation {
+ public:
+  SpdyInformation();
+  ~SpdyInformation() = default;
+
+  static const uint32_t kCount = 1;
+
+  // determine the index (0..kCount-1) of the spdy information that
+  // correlates to the npn string. NS_FAILED() if no match is found.
+  [[nodiscard]] nsresult GetNPNIndex(const nsACString& npnString,
+                                     uint32_t* result) const;
+
+  // determine if a version of the protocol is enabled for index < kCount
+  bool ProtocolEnabled(uint32_t index) const;
+
+  SpdyVersion Version[kCount];      // telemetry enum e.g. SPDY_VERSION_31
+  nsCString VersionString[kCount];  // npn string e.g. "spdy/3.1"
+
+  // the ALPNCallback function allows the protocol stack to decide whether or
+  // not to offer a particular protocol based on the known TLS information
+  // that we will offer in the client hello (such as version). There has
+  // not been a Server Hello received yet, so not much else can be considered.
+  ALPNCallback ALPNCallbacks[kCount];
+};
+
+}  // namespace net
+}  // namespace mozilla
+
+#endif  // mozilla_net_ASpdySession_h