The SOCKS5 destinations factory classified connections by scanning
debug.log for connection attempts to the requested address and port.
The destination is not unique per connection, so the log cannot
identify which attempt is being served: first-match returned a stale
type when an automatic connection reused an address private broadcast
had already used, and latest-match still breaks if two attempts to the
same address overlap.
Match the exact connection instead: the source addr:port of the
proxy's client socket equals the node's addrbind for that peer, so
looking it up in getpeerinfo identifies precisely the connection being
served and returns its connection_type. This also stops treating
debug.log contents as a stable interface.
Co-authored-by: Greg Sanders <gsanders87@gmail.com>
The client (e.g. `bitcoind`) may open a connection to the proxy and
close it in the middle of the SOCKS5 handshake if it is restarted for
example. Log these as debug messages instead of full blown Python
exception error messages with backtraces.
The `forward_sockets()` function used by the SOCKS5 proxy forwards data
between two connected sockets. It might happen that one of those sockets
gets closed/reset abruptly, without sending EOF first. This is to be
expected if e.g. `bitcoind` is shutdown and shouldn't result in noisy
harmless messages like:
```
2026-06-03T13:23:56.966859Z TestFramework.socks5 (ERROR): socks5 request handling failed (running True)
Traceback (most recent call last):
File ".../socks5.py", line 199, in handle
forward_sockets(self.conn, conn_to, self.wakeup_socket_pair[1], self.serv)
~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File ".../socks5.py", line 76, in forward_sockets
data = s.recv(4096)
ConnectionResetError: [Errno 104] Connection reset by peer
```
Instead turn this into a debug log message with a nice prefix containing
enough information to identify the two forwarded sockets.
Extract the part of `p2p_private_broadcast.py` that configures and
starts the SOCKS5 server into a reusable function and put it into
`test_framework/socks5.py`.
Use bind port 0 to let the OS pick an available port instead of
hackishly assuming that `p2p_port(N)` is available where N is more
than the number of the nodes the test uses.
The `Socks5Server` utility handles multiple incoming connections,
which are handled in separate background threads.
The `stop()` method unblocks and waits for the main background thread
cleanly, but it doesn't attempt to wait for any handler threads.
This change stores handler threads and connections, and attempts
to shut them down before `stop()` returns.
Co-authored-by: vasild <vd@FreeBSD.org>
Co-authored-by: w0xlt <94266259+w0xlt@users.noreply.github.com>
On FreeBSD, the default ephemeral port range (10000-65535) overlaps
with the test framework's static port range (11000-26000), causing
intermittent "address already in use" failures when tests use dynamic
port allocation (port=0).
Add a helper function that sets the IP_PORTRANGE/IPV6_PORTRANGE socket
option to IP_PORTRANGE_HIGH before binding, which requests ports from
the high range (49152-65535) instead. This range does not overlap with
the test framework's static ports.
Constants from FreeBSD's netinet/in.h and netinet6/in6.h:
- IP_PORTRANGE = 19 (for IPv4 sockets)
- IPV6_PORTRANGE = 14 (for IPv6 sockets)
- IP_PORTRANGE_HIGH = 1
Fixes: bitcoin/bitcoin#34331
Co-Authored-By: Vasil Dimov <vd@FreeBSD.org>
Co-Authored-By: MarcoFalke <*~=\`'#}+{/-|&$^_@721217.xyz>
Use port=0 for dynamic port allocation in test framework components
to avoid "address already in use" errors from concurrent tests or
ports stuck in TIME_WAIT state from previous test runs.
Changes:
- socks5.py: Update conf.addr after bind() to reflect actual port
- p2p.py: Retrieve actual port after create_server() when port=0
- feature_proxy.py: Use port=0 for all SOCKS5 proxy servers
- feature_anchors.py: Use port=0 for onion proxy server
If requested, make the SOCKS5 Python proxy redirect each connection to a
given destination. Actually act as a real proxy, connecting the
client to a destination, except that the destination is not what the
client asked for.
This would enable us to "connect" to Tor addresses from the functional
tests.
The Socks5 server we use in the test framework would disconnect
by default immediately after the handshake and sometimes would
not register as a connected peer by bitcoind.
