For your second question read this post from @Fox ,
maybe its what you need. Its in Russian, but you can
use translator. There is an example script too >
failed connect to the proxy
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hello my friends, anyone using proxy provider like webshare.io or smartproxy (now decodo) ?
i always failed to connect the proxy.but when i use proxyrack, everything is fine. do you know where is the problem ?
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Please write me these proxies in private messages, I will check it.