Support SOCSK5 proxy for BT UDP Trackers and DHT connections #1857
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The PR adds a new class
DHTConnectionSocksProxyImpl
which inherientsDHTConnectionImpl
, and is used inDHTSetup
, to provide SOCKS5 proxy support for UDP connections in BT, including UDP tracker and DHT connections (asDHTConnectionImpl
is used by both DHT and UDP trackers despite the name).The actual SOCKS5 logic is wrapped in class
SocksProxySocket
, to make it possible to reuse the logic in other features like general SOCKS5 proxy support for HTTP downloading.The PR also adds options
bt-udp-socks-proxy
,bt-udp-socks-proxy-user
, andbt-udp-socks-proxy-pass
to configure the proxy. When no proxy is set, the app fallbacks to useDHTConnectionImpl
that is without proxy. Parsing and cleaning ofbt-udp-socks-proxy
uses newly addedSocksProxyOptionHandler
, which works likeHttpProxyOptionHandler
. These UDP proxy options, though put aside other proxy options, wont be overrided byall-proxy
.A test has been included in the PR. However, as the test requires a SOCKS5 proxy server, currently the test is surpressed by early returning. I would like to suggest adding a SOCKS5 proxy server as fixtures via adding a 3rd party library or asking developers to start one in advance by such as GOST.
Ref: #470 and part of #153