Differences

This shows you the differences between the selected revision and the current version of the page.

uf:guanotes 2009/11/18 15:11 uf:guanotes 2009/11/18 15:12 current
Line 13: Line 13:
==== What is a guanote?  ==== ==== What is a guanote?  ====
-A guanote consists of a message and a receiver list (a flock or individual flockrs). Guanotes keeps track of the connected flockrs which are running the application. Guanotes applications communicate with each other (by means of the TOTAM middleware) to interchange the guanotes they carry. A guanote is propagated to another device only if a flockr belongs to the receiver list. A guanote is thus propagated through the network hopping from device to device in order to ensure that it gets received by all the targeted flockrs. +A guanote consists of a message and a receiver list (a flock or individual flockrs). Guanotes keeps track of the connected flockrs which are running the application. Guanotes applications communicate with each other (by means of the [[:uf:totam|TOTAM]] middleware) to interchange the guanotes they carry. A guanote is propagated to another device only if a flockr belongs to the receiver list. A guanote is thus propagated through the network hopping from device to device in order to ensure that it gets received by all the targeted flockrs. 
-In order to avoid flooding the network, TOTAM ensures that only flockrs belonging to the receiver list are used as //routers// (so that only potential targeted flockrs carry guanotes). +In order to avoid flooding the network, [[:uf:totam|TOTAM]] ensures that only flockrs belonging to the receiver list are used as //routers// (so that only potential targeted flockrs carry guanotes).
A guanote can be sent to a flock or an explicit collection of flockrs. In the later case end users can enumerate the targeted flockrs in the receiver list or take a snapshot of a flock. It is important to note that if the receiver is a flock, the guanote dynamically recomputes the flock definition at every device to which it gets propagated to determine the targeted flockrs. If the receiver is the snapshot of a flock, the guanote directly contains the list of targeted flockrs. A guanote can be sent to a flock or an explicit collection of flockrs. In the later case end users can enumerate the targeted flockrs in the receiver list or take a snapshot of a flock. It is important to note that if the receiver is a flock, the guanote dynamically recomputes the flock definition at every device to which it gets propagated to determine the targeted flockrs. If the receiver is the snapshot of a flock, the guanote directly contains the list of targeted flockrs.
Line 23: Line 23:
The above figure illustrates the propagation of a guanote in a campus-based scenario. It shows six flockrs connected in Urbiflock and running the Guanotes application. The communication range of their devices is depicted with a dotted line while the colored dot on their devices denotes the gender of the flockr (pink for girls, blue for males, and grey if the gender is not set in the flockr's profile). In particular, the figure shows how a "hallo" guanote is sent by Elisa to the //nearbyMaleFlock// (defined as all nearby male flockrs). This guanote is transitively propagated until all connected flockrs belonging to the nearbyMaleFlock are reached. The guanote is not propagated to flockrs that do not adhere to the definition of nearbyMaleFlock. The guanote is first propagated to Stijn and then to Wolf. Elisa's device is in communication range of two devices (corresponding to a female flockr and Stijn), but since the guanote is only meant for male nearby flockrs, it is only propagated to Stijn. Similarly, Stijn's device is nearby to Elisa, Wolf and a female flockr, but it only propagates the guanote to Wolf. It is important to note that Wolf receives the "hallo" guanote without being in direct communication range of Elisa's device. The above figure illustrates the propagation of a guanote in a campus-based scenario. It shows six flockrs connected in Urbiflock and running the Guanotes application. The communication range of their devices is depicted with a dotted line while the colored dot on their devices denotes the gender of the flockr (pink for girls, blue for males, and grey if the gender is not set in the flockr's profile). In particular, the figure shows how a "hallo" guanote is sent by Elisa to the //nearbyMaleFlock// (defined as all nearby male flockrs). This guanote is transitively propagated until all connected flockrs belonging to the nearbyMaleFlock are reached. The guanote is not propagated to flockrs that do not adhere to the definition of nearbyMaleFlock. The guanote is first propagated to Stijn and then to Wolf. Elisa's device is in communication range of two devices (corresponding to a female flockr and Stijn), but since the guanote is only meant for male nearby flockrs, it is only propagated to Stijn. Similarly, Stijn's device is nearby to Elisa, Wolf and a female flockr, but it only propagates the guanote to Wolf. It is important to note that Wolf receives the "hallo" guanote without being in direct communication range of Elisa's device.
- 
- 
 
 
 
Recent changes RSS feed Creative Commons License Donate Powered by PHP Valid XHTML 1.0 Valid CSS Driven by DokuWiki