Thanks you for this answer, David. Unfortunately, it doesn't works. In my original posted code, I made a mistake ( https proxy url was written as https://127.0.0.1:5865 instead of http:// : it was only a try ). Finally I made a few more tests about this issue: - If I use only a basic proxy which then connects directly to internet, the sample code works perfectly. - If I use only a MS proxy which accepts basic authentification ( I never found a way to authenticate successfully with NTLM ), it doesn't works ( errors are similar as provided in my last email ). - If I use any web browsers in any of the possible combinations ( basic proxy + ms proxy / ms proxy alone / ... ), it always connect and retrieve webpage contents. BTW, the stranger thing is that lwp module seems to etablish connection successfully ( "200 Connection etablished " ), but I get no datas in response. Only difference with webrowsers such as firefox or IE seem to be that they send a second CONNECT request when they receive the "200 connection etablished" response from the proxy. I don't know how to do the same with LWP, or lets it do that request automatically if necessary. Does anyone have experiencies with LWP connecting successfully via ms proxy in https ? Thanks you again. Luc.
