Configuring WCF rest web.config

This is how my web.config looks, I am getting bad request error when I am trying to POST a request to one of the method. I am sending file content as a parameter of HTTP POST to my method. I have used base64 encode to send a file. When the parameter content becomes large i.e for large file, I am getting Bad request error.

I have put breakpoints in the cs file, and I found out that the the method is not at all getting called. What can be the issue? I have added maxStringContentLength value but still of no use.

I am new to this, so I am not quite sure as to how the web.config file should contain.

Here is how my web.config looks:

 <?xml version="1.0"?>
    <configuration>
      <configSections>
        <section name="hibernate-configuration" type="NHibernate.Cfg.ConfigurationSectionHandler, NHibernate" />
        <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
      </configSections>
      <connectionStrings>

      </connectionStrings>
      <system.web>
        <compilation debug="true" targetFramework="4.0" />
      </system.web>
      <hibernate-configuration configSource="nhibernate.config"></hibernate-configuration>
      <system.net>
        <mailSettings>
          <smtp>

          </smtp>
        </mailSettings>
      </system.net>

      <appSettings>
        <add key="allowlog" value="1" />
      </appSettings>

      <system.webServer>
        <modules runAllManagedModulesForAllRequests="true">
          <add name="UrlRoutingModule" type="System.Web.Routing.UrlRoutingModule, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
        </modules>
      </system.webServer>

      <system.serviceModel>
        <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
        <standardEndpoints>
          <webHttpEndpoint>
            <!-- 
                Configure the WCF REST service base address via the global.asax.cs file and the default endpoint 
                via the attributes on the <standardEndpoint> element below
            -->
            <standardEndpoint name="" helpEnabled="true" automaticFormatSelectionEnabled="false" defaultOutgoingResponseFormat ="Json"/>
          </webHttpEndpoint>
        </standardEndpoints>

        <behaviors>

          <endpointBehaviors>

            <behavior name="webHttpBehavior">

              <webHttp defaultOutgoingResponseFormat="Json"/>

            </behavior>
            <behavior name="allowmaxfilesize">
              <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
            </behavior>
          </endpointBehaviors>

        </behaviors>
        <bindings>
          <webHttpBinding>
            <binding name="jsonp" crossDomainScriptAccessEnabled="true" />
            <binding name="test" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" transferMode="Streamed"  openTimeout="00:25:00" closeTimeout="00:25:00" sendTimeout="00:25:00" receiveTimeout="00:25:00" maxBufferSize="2147483647">
              <readerQuotas maxDepth="64"
                     maxStringContentLength="2147483647"
                     maxArrayLength="2147483647"
                     maxBytesPerRead="2147483647"
                     maxNameTableCharCount="2147483647"/>
            </binding>
          </webHttpBinding>
          <basicHttpBinding>
            <binding name="IncreasedTimeout" transferMode="Streamed" maxReceivedMessageSize="4294967296" maxBufferSize="2147483647" maxBufferPoolSize="2147483647" sendTimeout="00:25:00" openTimeout="00:25:00" receiveTimeout="00:10:00" closeTimeout="00:25:00">
              <readerQuotas
          maxArrayLength="2147483647"
              maxBytesPerRead="2147483647"
              maxDepth="2147483647"
              maxNameTableCharCount="2147483647"
          maxStringContentLength="2147483647" />

            </binding>

          </basicHttpBinding>
        </bindings>
        <services>

          <service name="Service1">

            <endpoint address="" behaviorConfiguration="webHttpBehavior" binding="webHttpBinding"

            bindingConfiguration="test" contract="IService1" />

          </service>

        </services>
      </system.serviceModel>

    </configuration>