LDAPConnection内核中的.net绑定超时

Question

我无法在LdapConnection内核中找到任何用于.net绑定超时的内容。一种解决方案是LdapConnection Bind Timeout，但它不适用于.net核心。LdapConnection超时和绑定超时似乎不同。我的代码如下所示

   var credentials = new NetworkCredential(obj.AdminBindUserName, obj.AdminBindPassword);

            if (obj.LDAPAddressPort.HasValue && obj.LDAPAddressPort > 0)
            {
                connection = new LdapConnection(new LdapDirectoryIdentifier(obj.LDAPAddress, obj.LDAPAddressPort.Value, false, false));
                //connection = new LdapConnection(new LdapDirectoryIdentifier(obj.LDAPAddress, obj.LDAPAddressPort));connection = new LdapConnection(new LdapDirectoryIdentifier(obj.LDAPAddress, obj.LDAPAddressPort));
            }
            else
            {
                connection = new LdapConnection(obj.LDAPAddress);
            }
             //connection.Timeout = new TimeSpan(0,0,5);   
            connection.SessionOptions.ProtocolVersion = 3;
            connection.AuthType = AuthType.Basic;           
            connection.Bind(credentials);

我尝试过连接超时，但看起来没有效果。我收到异常消息ExceptionCode: 81，消息: LDAP服务器在任意时间间隔不可用。有时18秒，有时超过一分钟。我正在通过vpn连接复制这个问题。我的本地ldap是通过首先连接到某个vpn连接的。有了vpn连接，每件事都能正常工作。但是没有vpn，我对Bind()方法的调用将无限期地等待

Answer 1

可以使用任务设置超时，一旦达到第二个超时，就会发生取消事件，以便退出，如下所示

if (obj.IsBindTimeLimit)
            {
                int timeoutSecond = obj.BindTimeOutInSeconds;
                if (timeoutSecond <= 0)
                {
                    timeoutSecond = 5;
                }
                CancellationToken tscancel = new CancellationToken();
                Task t = Task.Run(() =>
                {
                    var credentials = new NetworkCredential(obj.AdminBindUserName, obj.AdminBindPassword);
                    if (obj.LDAPAddressPort.HasValue && obj.LDAPAddressPort > 0)
                    {
                        connection = new LdapConnection(new LdapDirectoryIdentifier(obj.LDAPAddress, obj.LDAPAddressPort.Value, false, false));
                    }
                    else
                    {
                        connection = new LdapConnection(obj.LDAPAddress);
                    }                  
                    connection.SessionOptions.ProtocolVersion = 3;
                    connection.AuthType = AuthType.Basic;
                    connection.Bind(credentials);
                });
              
                if (!t.Wait(timeoutSecond * 1000, tscancel))
                {                    
                    throw new TimeoutException("The timeout interval elapsed");
                }

            }
            else
            {
                var credentials = new NetworkCredential(obj.AdminBindUserName, obj.AdminBindPassword);
                if (obj.LDAPAddressPort.HasValue && obj.LDAPAddressPort > 0)
                {
                    connection = new LdapConnection(new LdapDirectoryIdentifier(obj.LDAPAddress, obj.LDAPAddressPort.Value, false, false));
                }
                else
                {
                    connection = new LdapConnection(obj.LDAPAddress);
                }               
                connection.SessionOptions.ProtocolVersion = 3;
                connection.AuthType = AuthType.Basic;
                connection.Bind(credentials);
            }