In WCF, The remote server returned an unexpected response: (400) Bad Request is displayed.

Server Configuration

<Bindings>

<WsDualHttpBinding>
<Binding name = "SubscribeBindingConfig" receiveTimeout = "23:59:59" messageEncoding = "Text"
BypassProxyOnLocal = "true" usedefawebwebproxy = "false" maxBufferPoolSize = "4000000" maxcompute edmessagesize = "4000000">
<ReliableSession inactivityTimeout = "23:59:59"/>
<ReaderQuotas maxDepth = "64" maxStringContentLength = "16384" maxArrayLength = "16384"
MaxBytesPerRead = "8192" maxNameTableCharCount = "16384"/>
</Binding>
</WsDualHttpBinding>

</Bindings>

 

Client Configuration:

<Bindings>
<BasicHttpBinding>
<Binding name = "BasicHttpBinding_IPublishService" closeTimeout = "00:01:00"
OpenTimeout = "00:01:00" receiveTimeout = "00:10:00" sendTimeout = "00:01:00"
AllowCookies = "false" bypassProxyOnLocal = "true" usedefawebwebproxy = "false" hostNameComparisonMode = "StrongWildcard"
MaxBufferSize = "171072" maxBufferPoolSize = "1524288" maxcompute edmessagesize = "171072"
MessageEncoding = "Text" textEncoding = "UTF-8" transferMode = "Buffered">
<ReaderQuotas maxDepth = "64" maxStringContentLength = "16384" maxArrayLength = "16384"
MaxBytesPerRead = "8192" maxNameTableCharCount = "16384"/>
<Security mode = "None">
<Transport clientCredentialType = "None" proxyCredentialType = "None"
Realm = ""/>
<Message clientCredentialType = "UserName" algorithmSuite = "Default"/>
</Security>
</Binding>
</BasicHttpBinding>
</Bindings>
<Client>
<Endpoint address = "http: // localhost: 8734/Design_Time_Addresses/MessageBroker. Framework/PublishService /"
Binding = "basicHttpBinding" bindingConfiguration = "BasicHttpBinding_IPublishService"
Contract = "IPublishService" name = "BasicHttpBinding_IPublishService"/>

</Client>

 

Client code:

PublishServiceClient client = new PublishServiceClient ();

MessageDoc doc = new MessageDoc ();
Doc. SendSubject = TxSubject. Text. Trim ();
Doc. Add ("MachineName", Environment. MachineName );
..............

Client. Send (doc );

 

If The added data volume is large, Send reports The remote server returned an unexpected response: (400) Bad Request.

I don't know why, and the various binding parameters have been changed, it doesn't help.

Please help!