#33666: Investigate Snowflake proxy failures
-------------------------------------+------------------------------
Reporter: cohosh | Owner: (none)
Type: defect | Status: needs_review
Priority: High | Milestone:
Component: Circumvention/Snowflake | Version:
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: #19001 | Points:
Reviewer: | Sponsor:
-------------------------------------+------------------------------
Changes (by cohosh):
* status: new => needs_review
Comment:
Here's a patch that implements a variation of option (2) above. If the
proxy fails to open a datachannel more than a threshold number of times
since the last success, it is disabled with a new missingFeatures message.
https://github.com/cohosh/snowflake/pull/25
Let's get some feedback on this idea before moving further.
I tested this by applying the following patch to the client:
{{{
diff --git a/client/lib/rendezvous.go b/client/lib/rendezvous.go
index 1f98e26..330c90a 100644
--- a/client/lib/rendezvous.go
+++ b/client/lib/rendezvous.go
@@ -11,6 +11,7 @@ package lib
import (
"bytes"
"errors"
+ "fmt"
"io"
"io/ioutil"
"log"
@@ -119,8 +120,8 @@ func (bc *BrokerChannel) Negotiate(offer
*webrtc.SessionDescription) (
if nil != err {
return nil, err
}
- answer := util.DeserializeSessionDescription(string(body))
- return answer, nil
+ util.DeserializeSessionDescription(string(body))
+ return nil, fmt.Errorf("Dummy error")
case http.StatusServiceUnavailable:
return nil, errors.New(BrokerError503)
case http.StatusBadRequest:
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33666#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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