wcf binding error with using of nettcpbinding

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WCF

Dear Sir,

Here is my error, I am getting when I implemented WCF Services with nettcpbinding.
I am just reading an string which is in text file and the size of it is around 8MB, i converted it into bye and then read that, so in string it is returning the data , I saw this in debugging but when it is returning this string data to service client on self hosted environment it shows this error :
The maximum message size quota for incoming messages (65536) has been exceeded

here is my app.config please check that :


<configuration>

<appsettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true">

<system.web>
<compilation debug="true">
<httpruntime maxrequestlength="89535600">


<system.webserver>
<security>
<requestfiltering>
<requestlimits maxallowedcontentlength="89535600">



<!-- When deploying the service library project, the content of the config file must be added to the host's
app.config file. System.Configuration does not support config files for libraries. -->
<system.servicemodel>
<client>
<endpoint binding="netTcpBinding" bindingconfiguration="TcpSampleBinding">
contract="WcfServiceLibrary1.IService1" name="SampleClientBinding" />

<bindings>
<nettcpbinding>
<binding name="TcpSampleBinding" closetimeout="00:20:00" opentimeout="00:20:00">
receiveTimeout="00:20:00" sendTimeout="00:20:00" transactionFlow="false"
transferMode="Streamed" maxBufferPoolSize="524288" maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647">
<readerquotas maxdepth="64" maxstringcontentlength="10240" maxarraylength="16384">
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="Transport">



<behaviors>
<servicebehaviors>
<behavior name="SampleTestServiceBehaviour">
<servicedebug includeexceptiondetailinfaults="true">
<servicemetadata>



<services>
<service behaviorconfiguration="SampleTestServiceBehaviour" name="WcfServiceLibrary1.Service1">
<endpoint address="" binding="netTcpBinding">
name="SampleNetTcpBinding" contract="WcfServiceLibrary1.IService1" />
<endpoint address="mex" binding="mexTcpBinding" bindingconfiguration="">
name="NetTcpMaxBinding" contract="IMetadataExchange" />
<host>
<baseAddresses>
<add baseaddress="net.tcp://localhost:19957/SampleSvc">
</baseAddresses>