commit a269053ac205eec949ce133b71a7d1e2b6b3e1e6 Author: David Fifield david@bamsoftware.com Date: Sat Mar 26 12:34:47 2016 -0700

Make Snowflake-specific changes to the websocket server.

Change the transport name to "snowflake" and don't report the remote client address to the ExtORPort. --- server/server.go | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/server/server.go b/server/server.go index 986fd35..6729266 100644 --- a/server/server.go +++ b/server/server.go @@ -1,8 +1,10 @@ -// Tor websocket server transport plugin. +// Snowflake-specific websocket server plugin. This is the same as the websocket +// server used by flash proxy, except that it reports the transport name as +// "snowflake" and does not forward the remote address to the ExtORPort. // // Usage in torrc: // ExtORPort 6669 -// ServerTransportPlugin websocket exec ./websocket-server --port 9901 +// ServerTransportPlugin snowflake exec server --port 9901 package main

import ( @@ -24,7 +26,7 @@ import ( "git.torproject.org/pluggable-transports/websocket.git/websocket" )

-const ptMethodName = "websocket" +const ptMethodName = "snowflake" const requestTimeout = 10 * time.Second

// "4/3+1" accounts for possible base64 encoding. @@ -166,7 +168,10 @@ func webSocketHandler(ws *websocket.WebSocket) { handlerChan <- -1 }()

- or, err := pt.DialOr(&ptInfo, ws.Conn.RemoteAddr().String(), ptMethodName) + // Pass an empty string for the client address. The remote address on + // the incoming connection reflects that of the browser proxy, not of + // the client. See https://bugs.torproject.org/18628. + or, err := pt.DialOr(&ptInfo, "", ptMethodName) if err != nil { log.Printf("Failed to connect to ORPort: " + err.Error()) return