I'm using webkit with cURL backend to handle url. (curl version is 7.18.2, and link with openssl for https) I can't log on google when I access it through proxy. (I set ALL_PROXY environment variable). I can log on google well without proxy. I've tested gmail.com, and it works well. I'm not sure why these two pages acts differently. I'll attach trace data of curl.
Created attachment 22931 [details] curl trace when I couldn't log on google. curl trace when I couldn't log on google.