public ZConfig DefaultGetZConfig(ZServerChannel channel,
InitRequestInfo info,
out string strError)
{
strError = "";
return(new ZConfig());
}
void LogException(Exception ex,
ZServerChannel channel,
string name)
{
if (GetException(ex, typeof(ObjectDisposedException)) != null)
{
return;
}
SocketException socket_ex = (SocketException)GetException(ex, typeof(SocketException));
if (socket_ex != null && socket_ex.SocketErrorCode == SocketError.ConnectionReset)
{
return;
}
{
//string strName = "ip:" + ip
//+ channel == null ? "(null)" : " channel:" + channel.GetHashCode();
string strError = string.Format("{0} HandleClient() 异常: {1}",
name, ExceptionUtil.GetExceptionText(ex));
LibraryManager.Log?.Error(strError);
// Console.WriteLine(strError);
}
}
public ZServerChannel Add(TcpClient tcpClient)
{
ZServerChannel channel = new ZServerChannel();
channel.TcpClient = tcpClient;
channel.LastTime = DateTime.Now;
this.Add(channel);
return(channel);
}
// 默认的请求处理过程。应可以被重新指定
// 下级函数，例如处理 Initialize Search Present 的函数，还可以被重新指定
public async Task <byte[]> DefaultProcessRequest(ZServerChannel channel,
BerTree request)
{
BerNode root = request.GetAPDuRoot();
switch (root.m_uTag)
{
case BerTree.z3950_initRequest:
if (this.ProcessInitialize == null)
{
return(await DefaultProcessInitialize(channel, request).ConfigureAwait(false)); // 2018/10/10 add configure
}
else
{
ProcessInitializeEventArgs e = new ProcessInitializeEventArgs();
e.Request = request;
this.ProcessInitialize(channel, e);
return(e.Response);
}
break;
case BerTree.z3950_searchRequest:
if (this.ProcessSearch == null)
{
return(await DefaultProcessSearch(channel, request).ConfigureAwait(false)); // 2018/10/10 add configure
}
else
{
ProcessSearchEventArgs e = new ProcessSearchEventArgs();
e.Request = request;
this.ProcessSearch(channel, e);
return(e.Response);
}
break;
case BerTree.z3950_presentRequest:
if (this.ProcessPresent == null)
{
return(await DefaultProcessPresent(channel, request).ConfigureAwait(false)); // 2018/10/10 add configure
}
else
{
ProcessPresentEventArgs e = new ProcessPresentEventArgs();
e.Request = request;
this.ProcessPresent(channel, e);
return(e.Response);
}
break;
}
return(new byte[0]);
// TODO 如果将来嫌日志中记载 BerNode Dump 结果体积太大，Dump 结果可以考虑不进入日志
//string text = JsonConvert.SerializeObject(root, Formatting.Indented);
//throw new UnknownApduException(string.Format("无法识别的 APDU tag[{0}]\r\nBerNode={1}", root.m_uTag, text));
}
public async Task <byte[]> DefaultProcessPresent(ZServerChannel channel,
BerTree request)
{
BerNode root = request.GetAPDuRoot();
// 解码Search请求包
int nRet = ZProcessor.Decode_PresentRequest(
root,
out PresentRequestInfo info,
out string strError);
if (nRet == -1)
{
goto ERROR1;
}
if (channel.EnsureProperty()._bInitialized == false)
{
return(null);
}
PresentGetRecordsEventArgs e = new PresentGetRecordsEventArgs();
if (this.PresentGetRecords == null)
{
// 模拟返回一条记录
e.Records = new List <RetrivalRecord>();
RetrivalRecord record = new RetrivalRecord();
// TODO: 准备数据
e.Records.Add(record);
}
else
{
e.Request = info;
this.PresentGetRecords(channel, e);
}
// 编码Present响应包
nRet = ZProcessor.Encode_PresentResponse(info,
e.Records,
e.Diag,
e.TotalCount,
out byte[] baResponsePackage);
if (nRet == -1)
{
goto ERROR1;
}
return(baResponsePackage);
ERROR1:
// TODO: 将错误原因写入日志
return(null);
}
public async Task <byte[]> DefaultProcessSearch(ZServerChannel channel,
BerTree request)
{
BerNode root = request.GetAPDuRoot();
// 解码Search请求包
int nRet = ZProcessor.Decode_SearchRequest(
root,
out SearchRequestInfo info,
out string strError);
if (nRet == -1)
{
goto ERROR1;
}
if (channel.EnsureProperty()._bInitialized == false)
{
return(null);
}
SearchSearchEventArgs e = new SearchSearchEventArgs();
e.Request = info;
if (this.SearchSearch == null)
{
// 返回模拟的结果，假装命中了一条记录
e.Result = new ZClient.SearchResult {
Value = 1
};
}
else
{
this.SearchSearch(channel, e);
}
// 编码Search响应包
nRet = ZProcessor.Encode_SearchResponse(info,
e.Result,
e.Diag,
out byte[] baResponsePackage,
out strError);
if (nRet == -1)
{
goto ERROR1;
}
return(baResponsePackage);
ERROR1:
// TODO: 将错误原因写入日志
return(null);
}
public void Remove(ZServerChannel channel)
{
_lock.EnterWriteLock();
try
{
_channels.Remove(channel);
}
finally
{
_lock.ExitWriteLock();
}
}
// 默认的请求处理过程。应可以被重新指定
// 下级函数，例如处理 Initialize Search Present 的函数，还可以被重新指定
public async Task <byte[]> DefaultProcessRequest(ZServerChannel channel,
BerTree request)
{
BerNode root = request.GetAPDuRoot();
switch (root.m_uTag)
{
case BerTree.z3950_initRequest:
if (this.ProcessInitialize == null)
{
return(await DefaultProcessInitialize(channel, request));
}
else
{
ProcessInitializeEventArgs e = new ProcessInitializeEventArgs();
e.Request = request;
this.ProcessInitialize(channel, e);
return(e.Response);
}
break;
case BerTree.z3950_searchRequest:
if (this.ProcessSearch == null)
{
return(await DefaultProcessSearch(channel, request));
}
else
{
ProcessSearchEventArgs e = new ProcessSearchEventArgs();
e.Request = request;
this.ProcessSearch(channel, e);
return(e.Response);
}
break;
case BerTree.z3950_presentRequest:
if (this.ProcessPresent == null)
{
return(await DefaultProcessPresent(channel, request));
}
else
{
ProcessPresentEventArgs e = new ProcessPresentEventArgs();
e.Request = request;
this.ProcessPresent(channel, e);
return(e.Response);
}
break;
}
return(new byte[0]);
}
// 根据 @xxx 找到相关的 capo 实例，然后找到配置参数
Result AutoSetChannelProperty(ZServerChannel channel,
InitRequestInfo info)
{
if (this.SetChannelProperty == null)
{
return(this.DefaultSetChannelProperty(channel, info));
}
else
{
SetChannelPropertyEventArgs e = new SetChannelPropertyEventArgs();
e.Info = info;
this.SetChannelProperty(channel, e);
return(e.Result);
}
}
public void Add(ZServerChannel channel)
{
_lock.EnterWriteLock();
try
{
if (_channels.Count >= MAX_CHANNELS)
{
throw new Exception("HttpChannelCollection 配额超出。请稍后重试操作");
}
_channels.Add(channel);
}
finally
{
_lock.ExitWriteLock();
}
}
// 根据 @xxx 找到相关的 capo 实例，然后找到配置参数
ZConfig AutoGetZConfig(ZServerChannel channel,
InitRequestInfo info,
out string strError)
{
strError = "";
if (this.GetZConfig == null)
{
return(this.DefaultGetZConfig(channel, info, out strError));
}
GetZConfigEventArgs e = new GetZConfigEventArgs();
e.Info = info;
this.GetZConfig(channel, e);
strError = e.Result.ErrorInfo;
return(e.ZConfig);
}
// Pipeline 版本
// 处理一个通道的通讯活动
public async override void HandleClient(TcpClient tcpClient,
Action close_action,
CancellationToken token)
{
List <byte> cache = new List <byte>();
ZServerChannel channel = _tcpChannels.Add(tcpClient, () => { return(new ZServerChannel()); }) as ZServerChannel;
// 允许对 channel 做额外的初始化
if (this.ChannelOpened != null)
{
this.ChannelOpened(channel, new EventArgs());
}
try
{
string name = "";
string ip = "";
Task <Result> task = null;
try
{
name = channel.GetDebugName(tcpClient);
ip = TcpServer.GetClientIP(tcpClient);
channel.Touch();
int i = 0;
bool running = true;
while (running)
{
if (token != null && token.IsCancellationRequested)
{
return;
}
// 注意调用返回后如果发现返回 null 或者抛出了异常，调主要主动 Close 和重新分配 TcpClient
BerTree request = await ZProcessor.GetIncomingRequest(
cache,
tcpClient,
() => channel.Touch()).ConfigureAwait(false); // 2018/10/10 add configure
if (request == null)
{
Console.WriteLine("client close on request " + i);
break;
}
Console.WriteLine("request " + i);
channel.Touch();
if (token != null && token.IsCancellationRequested)
{
return;
}
// 如果前一轮的任务还没有完成，这里等待
if (task != null)
{
Result result = task.Result;
if (result.Value == -1)
{
return;
}
task = null;
}
task = Task.Run(() =>
ProcessAndResponse(
tcpClient,
close_action,
channel,
request,
token));
i++;
}
}
catch (Exception ex)
{
#if NO
if (ex.InnerException != null && ex.InnerException is ObjectDisposedException)
{
// 这种情况一般是 server 主动清理闲置通道导致的，不记入日志
}
else if (ex is ObjectDisposedException)
{
// 这种情况一般是 client close 通道导致，不记入日志
}
#endif
#if NO
if (GetException(ex, typeof(ObjectDisposedException)) != null)
{
return;
}
SocketException socket_ex = (SocketException)GetException(ex, typeof(SocketException));
if (socket_ex != null && socket_ex.SocketErrorCode == SocketError.ConnectionReset)
{
return;
}
{
string strName = "ip:" + ip
+ channel == null ? "(null)" : " channel:" + channel.GetHashCode();
string strError = strName + " HandleClient() 异常: " + ExceptionUtil.GetExceptionText(ex);
LibraryManager.Log?.Error(strError);
// Console.WriteLine(strError);
}
#endif
if (ex is UnknownApduException ||
ex is BadApduException)
{
IpTable.SetInBlackList(ip, TimeSpan.FromHours(1));
LibraryManager.Log?.Info(string.Format("IP 地址 {0} 已被加入黑名单，时限一个小时", ip));
}
LogException(ex, channel, name);
}
finally
{
#if NO
outputStream.Flush();
outputStream.Close();
outputStream = null;
inputStream.Close();
inputStream = null;
#endif
// tcpClient.Close();
// 清除全局结果集
if (task != null)
{
// TODO: 要想办法立即终止检索和响应过程
}
}
}
finally
{
_tcpChannels.Remove(channel);
#if NO
if (this.ChannelClosed != null)
{
ChannelClosedEventArgs e = new ChannelClosedEventArgs();
e.Channel = channel;
this.ChannelClosed(channel, e);
}
#endif
channel.Close();
if (close_action != null)
{
close_action.Invoke();
}
}
}
// 处理一个通道的通讯活动
public async void HandleClient(TcpClient tcpClient,
CancellationToken token)
{
ZServerChannel channel = _zChannels.Add(tcpClient);
// 允许对 channel 做额外的初始化
if (this.ChannelOpened != null)
{
this.ChannelOpened(channel, new EventArgs());
}
try
{
//List<byte> cache = new List<byte>();
string ip = "";
//Stream inputStream = tcpClient.GetStream();
//Stream outputStream = tcpClient.GetStream();
try
{
ip = GetClientIP(tcpClient);
channel.Touch();
int i = 0;
bool running = true;
while (running)
{
// 注意调用返回后如果发现返回 null 或者抛出了异常，调主要主动 Close 和重新分配 TcpClient
BerTree request = await ZProcessor.GetIncomingRequest(tcpClient);
if (request == null)
{
Console.WriteLine("client close on request " + i);
break;
}
Console.WriteLine("request " + i);
channel.Touch();
byte[] response = null;
if (this.ProcessRequest == null)
{
response = await DefaultProcessRequest(channel, request);
}
else
{
ProcessRequestEventArgs e = new ProcessRequestEventArgs();
e.Request = request;
this.ProcessRequest(channel, e);
response = e.Response;
}
channel.Touch();
// 注意调用返回 result.Value == -1 情况下，要及时 Close TcpClient
Result result = await ZProcessor.SendResponse(response, tcpClient);
channel.Touch();
if (result.Value == -1)
{
Console.WriteLine("error on response " + i + ": " + result.ErrorInfo);
break;
}
i++;
}
}
catch (Exception ex)
{
// 2016/11/14
ZManager.Log?.Error("ip:" + ip + " HandleClient() 异常: " + ExceptionUtil.GetExceptionText(ex));
}
finally
{
#if NO
outputStream.Flush();
outputStream.Close();
outputStream = null;
inputStream.Close();
inputStream = null;
#endif
// tcpClient.Close();
// 清除全局结果集
}
}
finally
{
_zChannels.Remove(channel);
#if NO
if (this.ChannelClosed != null)
{
ChannelClosedEventArgs e = new ChannelClosedEventArgs();
e.Channel = channel;
this.ChannelClosed(channel, e);
}
#endif
channel.Close();
}
}
// 处理一个通道的通讯活动
public async override void HandleClient(TcpClient tcpClient,
Action close_action,
CancellationToken token)
{
List <byte> cache = new List <byte>();
ZServerChannel channel = _tcpChannels.Add(tcpClient, () => { return(new ZServerChannel()); }) as ZServerChannel;
// 允许对 channel 做额外的初始化
if (this.ChannelOpened != null)
{
this.ChannelOpened(channel, new EventArgs());
}
try
{
string ip = "";
try
{
ip = GetClientIP(tcpClient);
channel.Touch();
int i = 0;
bool running = true;
while (running)
{
if (token != null && token.IsCancellationRequested)
{
return;
}
// 注意调用返回后如果发现返回 null 或者抛出了异常，调主要主动 Close 和重新分配 TcpClient
BerTree request = await ZProcessor.GetIncomingRequest(
cache,
tcpClient,
() => channel.Touch()).ConfigureAwait(false); // 2018/10/10 add configure
if (request == null)
{
Console.WriteLine("client close on request " + i);
break;
}
Console.WriteLine("request " + i);
channel.Touch();
if (token != null && token.IsCancellationRequested)
{
return;
}
byte[] response = null;
if (this.ProcessRequest == null)
{
response = await DefaultProcessRequest(channel, request).ConfigureAwait(false); // 2018/10/10 add configure
}
else
{
ProcessRequestEventArgs e = new ProcessRequestEventArgs();
e.Request = request;
this.ProcessRequest(channel, e);
response = e.Response;
}
channel.Touch();
if (token != null && token.IsCancellationRequested)
{
return;
}
// 注意调用返回 result.Value == -1 情况下，要及时 Close TcpClient
Result result = await ZProcessor.SendResponse(response, tcpClient).ConfigureAwait(false); // 2018/10/10 add configure
channel.Touch();
if (result.Value == -1)
{
Console.WriteLine("error on response " + i + ": " + result.ErrorInfo);
break;
}
i++;
}
}
catch (Exception ex)
{
if (ex.InnerException != null && ex.InnerException is ObjectDisposedException)
{
// 这种情况一般是 server 主动清理闲置通道导致的，不记入日志
}
else if (ex is ObjectDisposedException)
{
// 这种情况一般是 client close 通道导致，不记入日志
}
else
{
string strName = "ip:" + ip
+ channel == null ? "(null)" : " channel:" + channel.GetHashCode();
string strError = strName + " HandleClient() 异常: " + ExceptionUtil.GetExceptionText(ex);
LibraryManager.Log?.Error(strError);
// Console.WriteLine(strError);
}
}
finally
{
#if NO
outputStream.Flush();
outputStream.Close();
outputStream = null;
inputStream.Close();
inputStream = null;
#endif
// tcpClient.Close();
// 清除全局结果集
}
}
finally
{
_tcpChannels.Remove(channel);
#if NO
if (this.ChannelClosed != null)
{
ChannelClosedEventArgs e = new ChannelClosedEventArgs();
e.Channel = channel;
this.ChannelClosed(channel, e);
}
#endif
channel.Close();
if (close_action != null)
{
close_action.Invoke();
}
}
}
public /*async*/ Task <byte[]> DefaultProcessInitialize(ZServerChannel channel,
BerTree request)
{
BerNode root = request.GetAPDuRoot();
Encoding encoding = Encoding.GetEncoding(936);
REDO:
int nRet = ZProcessor.Decode_InitRequest(
root,
encoding,
out InitRequestInfo info,
out string strDebugInfo,
out string strError);
if (nRet == -1)
{
goto ERROR1;
}
// 可以用groupid来表示字符集信息
InitResponseInfo response_info = new InitResponseInfo();
if (info.m_charNego != null)
{
/* option
*
* search (0),
* present (1),
* delSet (2),
* resourceReport (3),
* triggerResourceCtrl (4),
* resourceCtrl (5),
* accessCtrl (6),
* scan (7),
* sort (8),
* -- (9) (reserved)
* extendedServices (10),
* level-1Segmentation (11),
* level-2Segmentation (12),
* concurrentOperations (13),
* namedResultSets (14)
* 15 Encapsulation Z39.50-1995 Amendment 3: Z39.50 Encapsulation
* 16 resultCount parameter in Sort Response See Note 8 Z39.50-1995 Amendment 1: Add resultCount parameter to Sort Response
* 17 Negotiation Model See Note 9 Model for Z39.50 Negotiation During Initialization
* 18 Duplicate Detection See Note 1 Z39.50 Duplicate Detection Service
* 19 Query type 104
* }
*/
response_info.m_strOptions = "yynnnnnnnnnnnnn";
if (info.m_charNego.EncodingLevelOID == CharsetNeogatiation.Utf8OID)
{
BerTree.SetBit(ref response_info.m_strOptions,
17,
true);
response_info.m_charNego = info.m_charNego;
// 2018/9/19
// 如果最初解码用的编码方式不是 UTF8，则需要重新解码
if (encoding != Encoding.UTF8)
{
encoding = Encoding.UTF8;
goto REDO;
}
channel.EnsureProperty()._searchTermEncoding = Encoding.UTF8;
if (info.m_charNego.RecordsInSelectedCharsets != -1)
{
response_info.m_charNego.RecordsInSelectedCharsets = info.m_charNego.RecordsInSelectedCharsets; // 依从前端的请求
if (response_info.m_charNego.RecordsInSelectedCharsets == 1)
{
channel.EnsureProperty()._marcRecordEncoding = Encoding.UTF8;
}
}
}
}
else
{
response_info.m_strOptions = "yynnnnnnnnnnnnn";
}
// 判断info中的信息，决定是否接受Init请求。
// ZServerChannel 初始化设置一些信息。这样它一直携带着伴随生命周期全程
Result result = AutoSetChannelProperty(channel, info);
if (result.Value == -1)
{
response_info.m_nResult = 0;
channel.EnsureProperty()._bInitialized = false;
ZProcessor.SetInitResponseUserInfo(response_info,
"1.2.840.10003.4.1", // string strOID,
string.IsNullOrEmpty(result.ErrorCode) ? 100 : Convert.ToInt32(result.ErrorCode), // (unspecified) error
result.ErrorInfo);
goto DO_RESPONSE;
}
#if NO
if (String.IsNullOrEmpty(info.m_strID) == true)
{
ZConfig config = AutoGetZConfig(channel, info, out strError);
if (config == null)
{
ZProcessor.SetInitResponseUserInfo(response_info,
"", // string strOID,
0, // long lErrorCode,
strError);
goto DO_RESPONSE;
}
// 如果定义了允许匿名登录
if (String.IsNullOrEmpty(config.AnonymousUserName) == false)
{
info.m_strID = config.AnonymousUserName;
info.m_strPassword = config.AnonymousPassword;
}
else
{
response_info.m_nResult = 0;
channel.SetProperty()._bInitialized = false;
ZProcessor.SetInitResponseUserInfo(response_info,
"", // string strOID,
0, // long lErrorCode,
"不允许匿名登录");
goto DO_RESPONSE;
}
}
#endif
if (this.InitializeLogin != null)
{
InitializeLoginEventArgs e = new InitializeLoginEventArgs();
this.InitializeLogin(channel, e);
if (e.Result.Value == -1 || e.Result.Value == 0)
{
response_info.m_nResult = 0;
channel.EnsureProperty()._bInitialized = false;
ZProcessor.SetInitResponseUserInfo(response_info,
"1.2.840.10003.4.1", // string strOID,
string.IsNullOrEmpty(e.Result.ErrorCode) ? 101 : Convert.ToInt32(e.Result.ErrorCode), // Access-control failure
e.Result.ErrorInfo);
}
else
{
response_info.m_nResult = 1;
channel.EnsureProperty()._bInitialized = true;
}
}
else
{
response_info.m_nResult = 1;
channel.EnsureProperty()._bInitialized = true;
}
#if NO
// 进行登录
// return:
// -1 error
// 0 登录未成功
// 1 登录成功
nRet = DoLogin(info.m_strGroupID,
info.m_strID,
info.m_strPassword,
out strError);
if (nRet == -1 || nRet == 0)
{
response_info.m_nResult = 0;
this._bInitialized = false;
ZProcessor.SetInitResponseUserInfo(response_info,
"", // string strOID,
0, // long lErrorCode,
strError);
}
else
{
response_info.m_nResult = 1;
channel._bInitialized = true;
}
#endif
DO_RESPONSE:
// 填充 response_info 的其它结构
response_info.m_strReferenceId = info.m_strReferenceId;
//if (channel._property == null)
// channel._property = new ChannelPropterty();
if (info.m_lPreferredMessageSize != 0)
{
channel.EnsureProperty().PreferredMessageSize = info.m_lPreferredMessageSize;
}
// 极限
if (channel.EnsureProperty().PreferredMessageSize > ZServerChannelProperty.MaxPreferredMessageSize)
{
channel.EnsureProperty().PreferredMessageSize = ZServerChannelProperty.MaxPreferredMessageSize;
}
response_info.m_lPreferredMessageSize = channel.EnsureProperty().PreferredMessageSize;
if (info.m_lExceptionalRecordSize != 0)
{
channel.EnsureProperty().ExceptionalRecordSize = info.m_lExceptionalRecordSize;
}
// 极限
if (channel.EnsureProperty().ExceptionalRecordSize > ZServerChannelProperty.MaxExceptionalRecordSize)
{
channel.EnsureProperty().ExceptionalRecordSize = ZServerChannelProperty.MaxExceptionalRecordSize;
}
response_info.m_lExceptionalRecordSize = channel.EnsureProperty().ExceptionalRecordSize;
response_info.m_strImplementationId = "Digital Platform";
response_info.m_strImplementationName = "dp2Capo";
response_info.m_strImplementationVersion = "1.0";
// BerTree tree = new BerTree();
ZProcessor.Encode_InitialResponse(response_info,
out byte[] baResponsePackage);
return(Task.FromResult(baResponsePackage));
ERROR1:
// TODO: 将错误原因写入日志
LibraryManager.Log?.Error(strError);
return(null);
}
public Result DefaultSetChannelProperty(ZServerChannel channel,
InitRequestInfo info)
{
return(new Result());
}
async Task <Result> ProcessAndResponse(
TcpClient tcpClient,
Action close_action,
ZServerChannel channel,
BerTree request,
CancellationToken token)
{
string name = "";
string ip = "";
bool error = false;
try
{
name = channel.GetDebugName(tcpClient);
ip = TcpServer.GetClientIP(tcpClient);
byte[] response = null;
if (this.ProcessRequest == null)
{
response = await DefaultProcessRequest(channel, request).ConfigureAwait(false); // 2018/10/10 add configure
}
else
{
ProcessRequestEventArgs e = new ProcessRequestEventArgs();
e.Request = request;
this.ProcessRequest(channel, e);
response = e.Response;
}
channel.Touch();
if (token != null && token.IsCancellationRequested)
{
error = true;
return(new Result {
Value = -1, ErrorInfo = "Cancelled"
});
}
// 注意调用返回 result.Value == -1 情况下，要及时 Close TcpClient
Result result = await ZProcessor.SendResponse(response, tcpClient).ConfigureAwait(false); // 2018/10/10 add configure
channel.Touch();
if (result.Value == -1)
{
Console.WriteLine("error on response " + name + ": " + result.ErrorInfo);
error = true;
return(result);
}
return(new Result());
}
catch (Exception ex)
{
if (ex is UnknownApduException ||
ex is BadApduException)
{
IpTable.SetInBlackList(ip, TimeSpan.FromHours(1));
LibraryManager.Log?.Info(string.Format("IP 地址 {0} 已被加入黑名单，时限一个小时", ip));
}
if (channel != null)
{
channel.Close();
if (close_action != null)
{
close_action.Invoke();
}
LogException(ex, channel, name);
channel = null;
}
else
{
LogException(ex, channel, name);
}
return(new Result {
Value = -1, ErrorInfo = "Cancelled"
});
}
finally
{
if (error == true &&
channel != null)
{
channel.Close();
if (close_action != null)
{
close_action.Invoke();
}
}
}
}