random_chain: keep iterating through the list on proxy error

[jeremyp3]

hi,

I happen to use high traffic proxies that work intermittently. When the proxy cannot provide me with the requested resource, it returns a 97 error with curl. With proxychains, it says "[proxychains] Random chain "socket error or timeout!" and it does not try to contact anyone else proxy from my list, unlike unresponsive proxies.

I think it would be better if proxychains doesn't stop on an error proxy, but continues selecting other proxy, like when the proxy times out.

What do you think ?

thanks!

Here is the configuration I use: random_chain chain_len = 1

tcp_read_time_out 15000 tcp_connect_time_out 8000

[ProxyList]

socks4 ip1 port1 socks4 ip2 port2 socks4 ip3 port3

:~ $ curl -vvvvvv --socks4 x.x.x.x:yyyy ipinfo.io

• Trying x.x.x.x:yyyy...
• SOCKS4 communication to ipinfo.io:80
• SOCKS4 non-blocking resolve of ipinfo.io
• SOCKS4 connect to IPv4 34.117.59.81 (locally resolved)
• connection to proxy closed
• Closing connection 0 curl: (97) connection to proxy closed

$ proxychains4 -f /etc/proxychains4.conf curl http://ipinfo.io [proxychains] config file found: /etc/proxychains4.conf [proxychains] preloading /usr/lib/x86_64-linux-gnu/libproxychains.so.4 [proxychains] DLL init: proxychains-ng 4.16 [proxychains] Random chain ... x.x.x.x:yyyy ... 34.117.59.81:80 <--socket error or timeout! curl: (7) Couldn't connect to server

[rofl0r]

so you're saying this happens when the connection estasblishment step to the proxy works, and it then times out connecting to the next hop (whether that be another proxy or the target)?

[jeremyp3]

Yes that's exactly it.

[rofl0r]

ok, so in order to make it behave like you want to we'd basically have to restore proxychains state to what it was before the last connection step, which could be non-trivial. i can see that what you suggest could improve user experience, otoh the behaviour of proxychains during the last 20 years is well-established and identical to what you experience when e.g. calling curl directly with a proxy option, so i think most random_chain users already have smoe sort of retry-loop in their scripts. anyway if someone wants to implement this and it's not to intrusive i think we can make the change.