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@@ -459,16 +459,30 @@ TODO: (very soon)
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1 -- REASON_MISC (catch-all for unlisted reasons)
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2 -- REASON_RESOLVEFAILED (couldn't look up hostname)
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- 3 -- REASON_CONNECTFAILED (couldn't connect to host/port)
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+ 3 -- REASON_CONNECTREFUSED (remote host refused connection) [*]
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4 -- REASON_EXITPOLICY (OR refuses to connect to host or port)
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- 5 -- REASON_DESTROY (circuit is being destroyed [???-NM])
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- 6 -- REASON_DONE (anonymized TCP connection was closed)
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- 7 -- REASON_TIMEOUT (OR timed out while connecting [???-NM])
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+ 5 -- REASON_DESTROY (Circuit is being destroyed)
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+ 6 -- REASON_DONE (Anonymized TCP connection was closed)
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+ 7 -- REASON_TIMEOUT (Connection timed out, or OR timed out
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+ while connecting)
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+ 8 -- (unallocated) [**]
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+ 9 -- REASON_HIBERNATING (OR is temporarily hibernating)
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+ 10 -- REASON_INTERNAL (Internal error at the OR)
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+ 11 -- REASON_RESOURCELIMIT (OR has no resources to fulfill request)
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+ 12 -- REASON_CONNRESET (Connection was unexpectedly reset)
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(With REASON_EXITPOLICY, the 4-byte IPv4 address or 16-byte IPv6 address
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forms the optional data; no other reason currently has extra data.)
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- *** [The rest of this section describes unimplemented functionality.]
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+ OPs and ORs MUST accept reasons not on the above list, since future
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+ versions of Tor may provide more fine-grained reasons.
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+
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+ [*] Older versions of Tor also send this reason when connections are
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+ reset.
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+ [**] Due to a bug in versions of Tor through 0095, error reason 8 must
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+ remain allocated until that version is obsolete.
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+
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+ --- [The rest of this section describes unimplemented functionality.]
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Because TCP connections can be half-open, we follow an equivalent
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to TCP's FIN/FIN-ACK/ACK protocol to close streams.
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Nick Mathewson