Web serviser请求通道在等待 00:00:59.6479648 以后答复时超时。增加传递给请求调用的超时值，或者增加绑定上的 SendTimeout 值。分配给此操作的时间可能是更长超时的一部分。
可以把sendTimeout调长一点试试
.net webService 中：
设置这些参数，延长连接时间，
closeTimeout="00:10:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00"
1 <binding name="netTcpBindConfig" closeTimeout="00:30:00" 2 openTimeout="00:30:00" receiveTimeout="00:30:00" sendTimeout="00:30:00" 3 transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions" 4 hostNameComparisonMode="StrongWildcard" listenBacklog="10" 5 maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxConnections="10" 6 maxReceivedMessageSize="2147483647">
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="XZDataWebChatServiceSoap" closeTimeout="00:30:00" openTimeout="00:30:00" receiveTimeout="00:30:00" sendTimeout="00:30:00" />
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://10.101.5.20:8010/Portal/Tenant/Webservice/XZDataWebChatService.asmx"
binding="basicHttpBinding" bindingConfiguration="XZDataWebChatServiceSoap"
contract="ServiceReference1.XZDataWebChatServiceSoap" name="XZDataWebChatServiceSoap" />
</client>
</system.serviceModel>
</configuration
>
