Privacy/Reviews/Persistent SPDY CWND: Difference between revisions

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Privacy/Reviews/Persistent SPDY CWND (view source)

Revision as of 19:53, 19 December 2012

167 bytes added ,  19 December 2012
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(Created page with "= Document Overview = {| |'''Feature/Product:''' || SPDY persistent CWND setting |- |'''Projected Feature Freeze Date:''' || <section begin='eta' />(tbd)<section end='eta' /> |...")
 
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In this section, the product's architecture is described. Any individual components or actors are identified, their "knowledge" or what data they store is identified, and data flow between components and external entities is described.  
In this section, the product's architecture is described. Any individual components or actors are identified, their "knowledge" or what data they store is identified, and data flow between components and external entities is described.  


'''The main objective of this feature/product is:''' (describe the goals of the feature/product here)
'''The main objective of this feature/product is:''' network performance for the spdy protocol using the persistent CWND settings attribute of the protocol.
 


'''Design Documents''':  
'''Design Documents''':  
Link to any design or architectural documents here.
 
https://bugzilla.mozilla.org/show_bug.cgi?id=822745
http://dev.chromium.org/spdy/spdy-protocol/spdy-protocol-draft3#TOC-2.6.4-SETTINGS


== Components  ==
== Components  ==


Describe any major components in the system and how they interact. Also include any third-party APIs (those Mozilla does not control) and what type of data is sent or received via those APIs.
A spdy server sends a value that represents the effective network CWND to the host periodically during the session. The client, upon creating a new session, echoes this value to the server so it can apply it to the new session and garner a performance benefit over TCP slow start. It is essentially a transport layer cookie specific to the protocol.
 
=== Component X  ===
 
This component does A, B and C and interacts with component Y to do D.
 
The tables below simply summarize the data encountered by this component.  
 
'''Stored Data:'''
 
{| class="wikitable"
|-
! What
! Where
|-
| data type
| where stored
|}


'''Communication with Component Y'''
The value is limited in our implementation to 7 bits and is stored per connection entry. a connection entry is more or less defined by the tuple of {hostname, ssl, private-browsing, anonymous} - so this data is not shared between PB and non PB sessions.


{| class="wikitable"
This data is not stored on disk and is not persisted between restarts.
|-
! Direction
! Message
! Data
! Notes
|-
| ''In:''
| message 1
| types of data received from component Y with the message
|
|-
| ''Out:''
| message 2
| types of data sent to component Y with the message
|
|}


an about:config preference is available to control whether or not the data is stored.


= User Data Risk Minimization =
= User Data Risk Minimization =
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