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WCF streaming upload file sends tiny chunks very slow

Posted By:      Posted Date: September 15, 2010    Points: 0   Category :WCF
Hello WCF friends, please help!   I've a WCF Service on both servers IIS7/ISA/Win2008 and IIS6/Apache Reverse-Proxy/Win2003. And a client app that downloads and uploads files (approx. 10MB).   When downloading there are no problems. But if I upload a file on some client machines a have a strange problem. They have all DSL 5 or 6mbps bandwidth. On some client machines the upload finishes after a few seconds. And some client machines it sends tiny chunks with pauses (see screenshot) and takes much time (after a long time I terminate the process). Screenshot: http://i55.tinypic.com/2s79wu8.png   I tried hundred different configurations and search and read complete google with no success. I tried it on VirtualBox with Win7 as guest and host. With NAT I get this problem but with network bridge there is no problem!!! Our customer have this problem too, but I don't know what for network settings they have. WCF Service web.config: <configuration> <system.web> <httpRuntime maxRequestLength="2097151" executionTimeout="100" /> </system.web> <system.serviceModel> <services> <service behaviorConfiguration="MyFileServiceBehavior" name="MyWeb.Services.FileService"> <endpoint binding="basicHttpBinding" bindingConfiguration="HttpBinding_MTOM" bindingNa

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