C# ServerStatusFlags类代码示例

    private void CheckEOF()
    {
      if (!packet.IsLastPacket)
        throw new MySqlException("Expected end of data packet");

      packet.ReadByte(); // read off the 254

      if (packet.HasMoreData)
      {
        warnings += packet.ReadInteger(2);
        serverStatus = (ServerStatusFlags)packet.ReadInteger(2);

        // if we are at the end of this cursor based resultset, then we remove
        // the last row sent status flag so our next fetch doesn't abort early
        // and we remove this command result from our list of active CommandResult objects.
        //                if ((serverStatus & ServerStatusFlags.LastRowSent) != 0)
        //              {
        //                serverStatus &= ~ServerStatusFlags.LastRowSent;
        //              commandResults.Remove(lastCommandResult);
        //        }
      }
    }

    public int GetResult(ref int affectedRow, ref long insertedId)
    {
      try
      {
        packet = stream.ReadPacket();
      }
      catch (TimeoutException)
      {
        // Do not reset serverStatus, allow to reenter, e.g when
        // ResultSet is closed.
        throw;
      }
      catch (Exception)
      {
        serverStatus = 0;
        throw;
      }

      int fieldCount = (int)packet.ReadFieldLength();
      if (-1 == fieldCount)
      {
        string filename = packet.ReadString();
        SendFileToServer(filename);

        return GetResult(ref affectedRow, ref insertedId);
      }
      else if (fieldCount == 0)
      {
        // the code to read last packet will set these server status vars 
        // again if necessary.
        serverStatus &= ~(ServerStatusFlags.AnotherQuery |
                          ServerStatusFlags.MoreResults);
        affectedRow = (int)packet.ReadFieldLength();
        insertedId = (long)packet.ReadFieldLength();

        serverStatus = (ServerStatusFlags)packet.ReadInteger(2);
        warnings += packet.ReadInteger(2);
        if (packet.HasMoreData)
        {
          packet.ReadLenString(); //TODO: server message
        }
      }
      return fieldCount;
    }

 public void ExecuteStatement(MySqlPacket packetToExecute)
 {
   warnings = 0;
   packetToExecute.Buffer[4] = (byte)DBCmd.EXECUTE;
   ExecutePacket(packetToExecute);
   serverStatus |= ServerStatusFlags.AnotherQuery;
 }

    public void Open()
    {
      // connect to one of our specified hosts
      try
      {
#if !CF
        if (Settings.ConnectionProtocol == MySqlConnectionProtocol.SharedMemory)
        {
          SharedMemoryStream str = new SharedMemoryStream(Settings.SharedMemoryName);
          str.Open(Settings.ConnectionTimeout);
          baseStream = str;
        }
        else
        {
#endif
          string pipeName = Settings.PipeName;
          if (Settings.ConnectionProtocol != MySqlConnectionProtocol.NamedPipe)
            pipeName = null;
          StreamCreator sc = new StreamCreator(Settings.Server, Settings.Port, pipeName,
              Settings.Keepalive, this.Version);
#if !CF
         if (Settings.IncludeSecurityAsserts)
            MySqlSecurityPermission.CreatePermissionSet(false).Assert();
#endif
          baseStream = sc.GetStream(Settings.ConnectionTimeout);
#if !CF
        }
#endif
      }
      catch (System.Security.SecurityException)
      {
        throw;
      }
      catch (Exception ex)
      {
        throw new MySqlException(Resources.UnableToConnectToHost,
            (int)MySqlErrorCode.UnableToConnectToHost, ex);
      }
      if (baseStream == null)
        throw new MySqlException(Resources.UnableToConnectToHost,
            (int)MySqlErrorCode.UnableToConnectToHost);

      int maxSinglePacket = 255 * 255 * 255;
      stream = new MySqlStream(baseStream, Encoding, false);

      stream.ResetTimeout((int)Settings.ConnectionTimeout * 1000);

      // read off the welcome packet and parse out it's values
      packet = stream.ReadPacket();
      int protocol = packet.ReadByte();
      string versionString = packet.ReadString();
      version = DBVersion.Parse(versionString);
      if (!version.isAtLeast(5, 0, 0))
        throw new NotSupportedException(Resources.ServerTooOld);
      threadId = packet.ReadInteger(4);
      encryptionSeed = packet.ReadString();

      maxSinglePacket = (256 * 256 * 256) - 1;

      // read in Server capabilities if they are provided
      ClientFlags serverCaps = 0;
      if (packet.HasMoreData)
        serverCaps = (ClientFlags)packet.ReadInteger(2);

      /* New protocol with 16 bytes to describe server characteristics */
      owner.ConnectionCharSetIndex = (int)packet.ReadByte();

      serverStatus = (ServerStatusFlags)packet.ReadInteger(2);

      // Since 5.5, high bits of server caps are stored after status.
      // Previously, it was part of reserved always 0x00 13-byte filler.
      uint serverCapsHigh = (uint)packet.ReadInteger(2);
      serverCaps |= (ClientFlags)(serverCapsHigh << 16);

      packet.Position += 11;
      string seedPart2 = packet.ReadString();
      encryptionSeed += seedPart2;

      string authenticationMethod = "";
      if ((serverCaps & ClientFlags.PLUGIN_AUTH) != 0)
      {
        authenticationMethod = packet.ReadString();
      }
      else
      {
        // Some MySql versions like 5.1, don't give name of plugin, default to native password.
        authenticationMethod = "mysql_native_password";
      }

      // based on our settings, set our connection flags
      SetConnectionFlags(serverCaps);

      packet.Clear();
      packet.WriteInteger((int)connectionFlags, 4);

#if !CF
      if ((serverCaps & ClientFlags.SSL) == 0)
      {
        if ((Settings.SslMode != MySqlSslMode.None)
        && (Settings.SslMode != MySqlSslMode.Preferred))
//.........这里部分代码省略.........

 /// <summary>
 /// Query is the method that is called to send all queries to the server
 /// </summary>
 public void SendQuery(MySqlPacket queryPacket)
 {
   warnings = 0;
   queryPacket.Buffer[4] = (byte)DBCmd.QUERY;
   ExecutePacket(queryPacket);
   // the server will respond in one of several ways with the first byte indicating
   // the type of response.
   // 0 == ok packet.  This indicates non-select queries
   // 0xff == error packet.  This is handled in stream.OpenPacket
   // > 0 = number of columns in select query
   // We don't actually read the result here since a single query can generate
   // multiple resultsets and we don't want to duplicate code.  See ReadResult
   // Instead we set our internal server status flag to indicate that we have a query waiting.
   // This flag will be maintained by ReadResult
   serverStatus |= ServerStatusFlags.AnotherQuery;
 }

    internal void ReadOk(bool read)
    {
      try
      {
        if (read)
          packet = stream.ReadPacket();
        byte marker = (byte)packet.ReadByte();
        if (marker != 0)
        {
          throw new MySqlException("Out of sync with server", true, null);
        }

        packet.ReadFieldLength(); /* affected rows */
        packet.ReadFieldLength(); /* last insert id */
        if (packet.HasMoreData)
        {
          serverStatus = (ServerStatusFlags)packet.ReadInteger(2);
          packet.ReadInteger(2);  /* warning count */
          if (packet.HasMoreData)
          {
            packet.ReadLenString();  /* message */
          }
        }
      }
      catch (MySqlException ex)
      {
        HandleException(ex);
        throw;
      }
    }

 public bool HasStatus(ServerStatusFlags flag)
 {
     return (handler.ServerStatus & flag) != 0;
 }

        public void Open()
        {
            // connect to one of our specified hosts
            try
            {
                baseStream = StreamCreator.GetStream(Settings);
                //#if !CF && !RT
                //         if (Settings.IncludeSecurityAsserts)
                //            MySqlSecurityPermission.CreatePermissionSet(false).Assert();
                //#endif
            }
            catch (System.Security.SecurityException)
            {
                throw;
            }
            catch (Exception ex)
            {
                throw new MySqlException("Resources.UnableToConnectToHost",
                    (int)MySqlErrorCode.UnableToConnectToHost, ex);
            }
            if (baseStream == null)
                throw new MySqlException("Resources.UnableToConnectToHost",
                    (int)MySqlErrorCode.UnableToConnectToHost);

            int maxSinglePacket = 255 * 255 * 255;
            stream = new MySqlStream(baseStream, Encoding, false);

            stream.ResetTimeout((int)Settings.ConnectionTimeout * 1000);

            // read off the welcome packet and parse out it's values
            packet = stream.ReadPacket();
            int protocol = packet.ReadByte();
            string versionString = packet.ReadString();
            owner.isFabric = versionString.EndsWith("fabric", StringComparison.OrdinalIgnoreCase);
            version = DBVersion.Parse(versionString);
            if (!owner.isFabric && !version.isAtLeast(5, 0, 0))
                throw new NotSupportedException("Resources.ServerTooOld");

            threadId = packet.ReadInteger(4);

            byte[] seedPart1 = packet.ReadStringAsBytes();

            maxSinglePacket = (256 * 256 * 256) - 1;

            // read in Server capabilities if they are provided
            ClientFlags serverCaps = 0;
            if (packet.HasMoreData)
                serverCaps = (ClientFlags)packet.ReadInteger(2);

            /* New protocol with 16 bytes to describe server characteristics */
            owner.ConnectionCharSetIndex = (int)packet.ReadByte();

            serverStatus = (ServerStatusFlags)packet.ReadInteger(2);

            // Since 5.5, high bits of server caps are stored after status.
            // Previously, it was part of reserved always 0x00 13-byte filler.
            uint serverCapsHigh = (uint)packet.ReadInteger(2);
            serverCaps |= (ClientFlags)(serverCapsHigh << 16);

            packet.Position += 11;
            byte[] seedPart2 = packet.ReadStringAsBytes();
            encryptionSeed = new byte[seedPart1.Length + seedPart2.Length];
            seedPart1.CopyTo(encryptionSeed, 0);
            seedPart2.CopyTo(encryptionSeed, seedPart1.Length);

            string authenticationMethod = "";
            if ((serverCaps & ClientFlags.PLUGIN_AUTH) != 0)
            {
                authenticationMethod = packet.ReadString();
            }
            else
            {
                // Some MySql versions like 5.1, don't give name of plugin, default to native password.
                authenticationMethod = "mysql_native_password";
            }

            // based on our settings, set our connection flags
            SetConnectionFlags(serverCaps);

            packet.Clear();
            packet.WriteInteger((int)connectionFlags, 4);
            packet.WriteInteger(maxSinglePacket, 4);
            packet.WriteByte(33); //character set utf-8
            packet.Write(new byte[23]);

            #if !CF && !RT
            if ((serverCaps & ClientFlags.SSL) == 0)
            {
                if ((Settings.SslMode != MySqlSslMode.None)
                && (Settings.SslMode != MySqlSslMode.Preferred))
                {
                    // Client requires SSL connections.
                    string message = String.Format("Resources.NoServerSSLSupport",

                        Settings.Server);
                    throw new MySqlException(message);
                }
            }
            else if (Settings.SslMode != MySqlSslMode.None)
            {
//.........这里部分代码省略.........

        public void Open()
        {
            // connect to one of our specified hosts
            baseStream = new RemoteConnection();
            baseStream.Connect(MySqlConnection.CurrentStringBuilder.ServerEndPoint, MySqlConnection.CurrentStringBuilder.ServerPort);

            int maxSinglePacket = 255 * 255 * 255;
            stream = new MySqlStream(baseStream, Encoding, false);

            stream.ResetTimeout((int)Settings.ConnectionTimeout * 1000);

            // read off the welcome packet and parse out it's values
            packet = stream.ReadPacket();
            int protocol = packet.ReadByte();
            string versionString = packet.ReadString();
            version = DBVersion.Parse(versionString);
            if (!version.isAtLeast(5, 0, 0))
                throw new NotSupportedException(Resources.ServerTooOld);
            threadId = packet.ReadInteger(4);
            encryptionSeed = packet.ReadString();

            maxSinglePacket = (256 * 256 * 256) - 1;

            // read in Server capabilities if they are provided
            ClientFlags serverCaps = 0;
            if (packet.HasMoreData)
                serverCaps = (ClientFlags)packet.ReadInteger(2);

            /* New protocol with 16 bytes to describe server characteristics */
            owner.ConnectionCharSetIndex = (int)packet.ReadByte();

            serverStatus = (ServerStatusFlags)packet.ReadInteger(2);

            // Since 5.5, high bits of server caps are stored after status.
            // Previously, it was part of reserved always 0x00 13-byte filler.
            uint serverCapsHigh = (uint)packet.ReadInteger(2);
            serverCaps |= (ClientFlags)(serverCapsHigh << 16);

            packet.Position += 11;
            string seedPart2 = packet.ReadString();
            encryptionSeed += seedPart2;

            string authenticationMethod = "";
            if ((serverCaps & ClientFlags.PLUGIN_AUTH) != 0)
            {
                authenticationMethod = packet.ReadString();
            }
            else
            {
                // Some MySql versions like 5.1, don't give name of plugin, default to native password.
                authenticationMethod = "mysql_native_password";
            }

            // based on our settings, set our connection flags
            SetConnectionFlags(serverCaps);

            packet.Clear();
            packet.WriteInteger((int)connectionFlags, 4);

            packet.WriteInteger(maxSinglePacket, 4);
            packet.WriteByte(8);
            packet.Write(new byte[23]);

            Authenticate(authenticationMethod, false);

            // if we are using compression, then we use our CompressedStream class
            // to hide the ugliness of managing the compression
            if ((connectionFlags & ClientFlags.COMPRESS) != 0)
                stream = new MySqlStream(baseStream, Encoding, true);

            // give our stream the server version we are connected to.
            // We may have some fields that are read differently based
            // on the version of the server we are connected to.
            packet.Version = version;
            stream.MaxBlockSize = maxSinglePacket;
        }

        public void Open()
        {
            // connect to one of our specified hosts
            try
            {
            #if !CF
                if (Settings.ConnectionProtocol == MySqlConnectionProtocol.SharedMemory)
                {
                    SharedMemoryStream str = new SharedMemoryStream(Settings.SharedMemoryName);
                    str.Open(Settings.ConnectionTimeout);
                    baseStream = str;
                }
                else
                {
            #endif
                    string pipeName = Settings.PipeName;
                    if (Settings.ConnectionProtocol != MySqlConnectionProtocol.NamedPipe)
                        pipeName = null;
                    StreamCreator sc = new StreamCreator(Settings.Server, Settings.Port, pipeName,
                        Settings.Keepalive);
                    baseStream = sc.GetStream(Settings.ConnectionTimeout);
            #if !CF
                }
            #endif
            }
            catch (Exception ex)
            {
                    throw new MySqlException(MySqlResources.UnableToConnectToHost,
                    (int) MySqlErrorCode.UnableToConnectToHost, ex);
            }

            if (baseStream == null)
                    throw new MySqlException(MySqlResources.UnableToConnectToHost,
                    (int)MySqlErrorCode.UnableToConnectToHost);

            int maxSinglePacket = 255*255*255;
            stream = new MySqlStream(baseStream, Encoding, false);

            stream.ResetTimeout((int)Settings.ConnectionTimeout*1000);

            // read off the welcome packet and parse out it's values
            packet = stream.ReadPacket();
            int protocol = packet.ReadByte();
            string versionString = packet.ReadString();
            version = DBVersion.Parse(versionString);
            if (!version.isAtLeast(4, 1, 1))
                    throw new NotSupportedException(MySqlResources.ServerTooOld);
            threadId = packet.ReadInteger(4);
            encryptionSeed = packet.ReadString();

            maxSinglePacket = (256*256*256) - 1;

            // read in Server capabilities if they are provided
            ClientFlags serverCaps = 0;
            if (packet.HasMoreData)
                serverCaps = (ClientFlags) packet.ReadInteger(2);

            /* New protocol with 16 bytes to describe server characteristics */
            owner.ConnectionCharSetIndex = (int)packet.ReadByte();

            serverStatus = (ServerStatusFlags) packet.ReadInteger(2);
            packet.Position += 13;
            string seedPart2 = packet.ReadString();
            encryptionSeed += seedPart2;

            // based on our settings, set our connection flags
            SetConnectionFlags(serverCaps);

            packet.Clear();
            packet.WriteInteger((int) connectionFlags, 4);

            #if !CF
            if ((serverCaps & ClientFlags.SSL) ==0)
            {
                if ((Settings.SslMode != MySqlSslMode.None)
                && (Settings.SslMode != MySqlSslMode.Preferred))
                {
                    // Client requires SSL connections.
                         string message = String.Format(MySqlResources.NoServerSSLSupport,
                        Settings.Server);
                    throw new MySqlException(message);
                }
            }
            else if (Settings.SslMode != MySqlSslMode.None)
            {
                stream.SendPacket(packet);
                StartSSL();
                packet.Clear();
                packet.WriteInteger((int) connectionFlags, 4);
            }
            #endif

            packet.WriteInteger(maxSinglePacket, 4);
            packet.WriteByte(8);
            packet.Write(new byte[23]);

            Authenticate();

            // if we are using compression, then we use our CompressedStream class
            // to hide the ugliness of managing the compression
//.........这里部分代码省略.........