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Hi, I'm trying to implement a TLS wrapping proxy to "secure" a TLS incapable web service, so the intended information flow is like this: client -(TLS encrypted data)-> proxy -(plain data)-> server.local:8080 server.local -(plain data)-> proxy -(TLS encrypted data)-> client In Wireshark I can see that "server.local" sends the response as expected to the proxy, but I'm unable to get the proxy to return the data as expected to the client. The proxy does not always return the whole response from "server.local". Requesting small entities (10000 byte >= response size) seems to work (success.log). Whereas bigger entities (~16000 byte <= response size) fail (error.log). My proxy config: [Proxy] RxBuffSize=65536 MaxClients=999 ServerHeader=Foo Bar Baz LocalAddr=0.0.0.0 DebugLevel=DebugAll TarSecLevel=sslSecLevel128bits CertVerTar=CertVerWinStore SslReportChain=True [Source1] AuthForceSsl=True AuthSslCmd=True BindIpAddr=0.0.0.0 BindNonPort=80 BindSslPort=443 Descr=Bar Enabled=True Hosts=foo.local HostTag=FooBarBaz CertChallange=ChallNone CertSignDigest=Digest_sha256 CerSupplierProto=SuppProtoNone CliCertMethod=sslCliCertNone SslLoadSource=CertWinStoreMachine SslSrvSecurity=sslSrvSecHigh [Target1] Descr=Foo HostEnabled=True HostTag=FooBarBaz IdleTimeout=60 ;SrcPath= TarHost=localhost TarPort=8080 TarSsl=False UpdateHtml=True UpdateHttp=True Is there anything obvious I'm missing? Used ICS version: ICS V9.2 - Part 6, Revision 50 error.log success.log