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#region Copyright notice and license
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Runtime.InteropServices;
using System.Threading;
using System.Threading.Tasks;
using Grpc.Core.Internal;
namespace Grpc.Core
{
/// <summary>
/// gRPC Channel
/// </summary>
public class Channel : IDisposable
{
readonly ChannelSafeHandle handle;
readonly string target;
/// <summary>
/// Creates a channel.
/// </summary>
public Channel(string target, Credentials credentials = null, ChannelArgs channelArgs = null)
{
using (ChannelArgsSafeHandle nativeChannelArgs = CreateNativeChannelArgs(channelArgs))
{
if (credentials != null)
{
using (CredentialsSafeHandle nativeCredentials = credentials.ToNativeCredentials())
{
this.handle = ChannelSafeHandle.CreateSecure(nativeCredentials, target, nativeChannelArgs);
}
}
else
{
this.handle = ChannelSafeHandle.Create(target, nativeChannelArgs);
}
}
this.target = GetOverridenTarget(target, channelArgs);
}
internal ChannelSafeHandle Handle
{
get
{
return this.handle;
}
}
public string Target
{
get
{
return this.target;
}
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (handle != null && !handle.IsInvalid)
{
handle.Dispose();
}
}
private static string GetOverridenTarget(string target, ChannelArgs args)
{
if (args != null && !string.IsNullOrEmpty(args.GetSslTargetNameOverride()))
{
return args.GetSslTargetNameOverride();
}
return target;
}
private static ChannelArgsSafeHandle CreateNativeChannelArgs(ChannelArgs args)
{
if (args == null)
{
return ChannelArgsSafeHandle.CreateNull();
}
return args.ToNativeChannelArgs();
}
}
}
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