commit 4212db3cb902a368199d96b3483f4ce15ce4cfed Author: Nick Mathewson nickm@torproject.org Date: Wed Jul 20 11:08:09 2011 -0400

Spec changes for proposal 181 (client-side optimistic data) --- dir-spec.txt | 5 +++++ proposals/000-index.txt | 4 ++-- proposals/181-optimistic-data-client.txt | 3 ++- socks-extensions.txt | 13 +++++++++++++ 4 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/dir-spec.txt b/dir-spec.txt index a4dd14f..9a22323 100644 --- a/dir-spec.txt +++ b/dir-spec.txt @@ -1207,6 +1207,11 @@ parameters governing behavior" in path-spec.txt for a series of circuit build time related consensus params.

+ "UseOptimisticData" -- If set to zero, clients by default + shouldn't try to send optimistic data to servers until they have + received a RELAY_CONNECTED cell. + Min: 0, Max: 1 + The authority section of a vote contains the following items, followed in turn by the authority's current key certificate:

diff --git a/proposals/000-index.txt b/proposals/000-index.txt index bd952ad..97248b8 100644 --- a/proposals/000-index.txt +++ b/proposals/000-index.txt @@ -101,7 +101,7 @@ Proposals by number: 178 Require majority of authorities to vote for consensus parameters [OPEN] 179 TLS certificate and parameter normalization [DRAFT] 180 Pluggable transports for circumvention [OPEN] -181 Optimistic Data for Tor: Client Side [OPEN] +181 Optimistic Data for Tor: Client Side [CLOSED] 182 Credit Bucket [DRAFT]

@@ -133,7 +133,6 @@ Proposals by status: 177 Abstaining from votes on individual flags [for 0.2.3.x] 178 Require majority of authorities to vote for consensus parameters [for 0.2.3.x] 180 Pluggable transports for circumvention [for 0.2.3.x] - 181 Optimistic Data for Tor: Client Side ACCEPTED: 110 Avoiding infinite length circuits [for 0.2.3.x] [in 0.2.1.3-alpha] 117 IPv6 exits [for 0.2.3.x] @@ -186,6 +185,7 @@ Proposals by status: 167 Vote on network parameters in consensus [in 0.2.2] 171 Separate streams across circuits by connection metadata [in 0.2.3.3-alpha] 174 Optimistic Data for Tor: Server Side [in 0.2.3.1-alpha] + 181 Optimistic Data for Tor: Client Side [in 0.2.3.3-alpha] SUPERSEDED: 112 Bring Back Pathlen Coin Weight 113 Simplifying directory authority administration diff --git a/proposals/181-optimistic-data-client.txt b/proposals/181-optimistic-data-client.txt index 733b8a1..6d0a929 100644 --- a/proposals/181-optimistic-data-client.txt +++ b/proposals/181-optimistic-data-client.txt @@ -2,7 +2,8 @@ Filename: 181-optimistic-data-client.txt Title: Optimistic Data for Tor: Client Side Author: Ian Goldberg Created: 2-Jun-2011 -Status: Open +Status: Closed +Implemented-In: 0.2.3.3-alpha

Overview:

diff --git a/socks-extensions.txt b/socks-extensions.txt index f587d9c..b9f070a 100644 --- a/socks-extensions.txt +++ b/socks-extensions.txt @@ -75,6 +75,19 @@ Tor's extensions to the SOCKS protocol misconfigured. This is helpful for the many users who mistakenly try to use Tor as an HTTP proxy instead of a SOCKS proxy.

+5. Optimistic data + + Tor allows SOCKS clients to send connection data before Tor has sent a + SOCKS response. When using an exit node that supports "optimistic data", + Tor will send such data to the server without waiting to see whether the + connection attempt succeeds. This behavior can save a single round-trip + time when starting connections with a protocol where the client speaks + first (like HTTP). Clients that do this must be ready to hear that + their connection has succeeded or failed _after_ they have sent the + data. + + + References: [1] http://archive.socks.permeo.com/protocol/socks4.protocol [2] http://archive.socks.permeo.com/protocol/socks4a.protocol