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Date: Fri, 22 Jul 2022 22:08:55 -0700
From: "Anton Shevchenko" <anton@sancoder.com>
To: "Bitcoin Devs" <bitcoin-dev@lists.linuxfoundation.org>
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Subject: [bitcoin-dev] bitcoind -proxy=host:port doesn't work for unroutable
network
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Hello,
Got unexpected behavior when trying to run bitcoind with -proxy setting.
-proxy is used to connect to SOCKS5 proxy which is able to access some internal network.
bitcoind is started with -noconnect option and network activity is absent (as it should be).
Then I command bitcoin-cli to connect to node with address 10.x.y.z with the command
bitcoin-cli addnode 10.x.y.z add
Expected behavior is for bitcoind to initiate connection through proxy.
Actual behavior is bitcoind trying to connect without using proxy.
In the code:
CConnman::ConnectNode calls GetProxy and GetProxy returns false because CNetAddr::GetNetwork returns NET_UNROUTABLE.
My take is this is unexpected behavior at minimum and should be documented.
Better way is to introduce another option just for the unroutable addresses:
- connect locally (for compatibility reasons, default);
- connect thru proxy;
- don't connect to unroutable addresses.
-- Anton Shevchenko
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