Quelle ASpdySession.h Sprache: C

: : nil --/

/* 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 "nsHttp.h"
#include "nsString.h"

class nsISocketTransport;

namespace mozilla {
namespace net {

class nsHttpConnection;

class ASpdySession : public nsAHttpTransaction {
public:
  ASpdySession() = default;
  virtual ~ASpdySession() = default;

  [[nodiscard]] virtual bool AddStream(nsAHttpTransaction*, int32_t,
                                       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;

  virtual void PrintDiagnostics(nsCString& log) = 0;

  bool ResponseTimeoutEnabled() const final { return true; }

  virtual/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

  const static uint32_tkSendingChunkSize = 1600java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
  const static uint32_t kTCPSendBufferSize = 131072;
  const static uint32_t kInitialPushAllowance = 131072;  // match default pref

  // 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 WebSocketSupport GetWebSocketSupport() = 0;

  virtual already_AddRefed<mozilla::net::nsHttpConnection> CreateTunnelStream(
      nsAHttpTransaction* aHttpTransaction, nsIInterfaceRequestor* aCallbacks,
      PRIntervalTime aRtt, bool aIsWebSocket = false) = 0;
};

using ALPNCallback = bool (*)(nsITLSSocketControl*);

// 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;

  SpdyVersion Version;      // telemetry enum e.g. SPDY_VERSION_31
  nsCString VersionString;  // 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;
};

}  // namespace net
}  // namespace mozilla

#endif  // mozilla_net_ASpdySession_h

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