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Refine extend_info_for_node's "enough info" check once again.

Browse Source 
In d1874b4339, we adjusted this check so that we insist on
using routerinfos for bridges.  That's almost correct... but if we
have a bridge that is also a regular relay, then we should use
insist on its routerinfo when connecting to it as a bridge
(directly), and be willing to use its microdescriptor when
connecting to it elsewhere in our circuits.

This bug is a likely cause of some (all?) of the (exit_ei == NULL)
failures we've been seeing.

Fixes bug 25691; bugfix on 0.3.3.4-alpha
This commit is contained in:
Nick Mathewson 2018-04-12 16:53:53 -04:00
parent 46795a7be6
commit 2d6914e391
2 changed files with 7 additions and 1 deletions
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6
changes/bug25691 Normal file
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@ -0,0 +1,6 @@
o Minor bugfixes (client):
- When using a listed relay as a bridge, and also using
microdescriptors, and considering that relay as a non-bridge in
a circuit, consider its microdescriptor as a valid source of information
about that relay. Fixes bug 25691; bugfix on 0.3.3.4-alpha.

2
src/or/circuitbuild.c
View File

@ -2860,7 +2860,7 @@ extend_info_from_node(const node_t *node, int for_direct_connect)
const int is_bridge = node_is_a_configured_bridge(node);
const int we_use_mds = we_use_microdescriptors_for_circuits(get_options());
if (is_bridge || !we_use_mds) {
if ((is_bridge && for_direct_connect) || !we_use_mds) {
/* We need an ri in this case. */
if (!node->ri)
return NULL;