Thursday, February 01, 2007

Bidirectional GIOP

Bi-dir introduction

Bi-dir is a GIOP level capability that allows CORBA client and server (ORB) to reuse existing connection for bidirectional usage and is available from GIOP 1.2 onwards.

Prior to GIOP 1.2, only the client ORB could send the following GIOP messages - Request, Cancel Request, Locate Request.

Similarly, only the server ORB could send the following GIOP messages – Reply, Locate Reply and Close Connection.

The client ORB would initiate a new connection to server ORB and send its messages. The server ORB would then send back its messages on the same connection. If however, the server ORB also had a client component and had to, for example, make a callback request, then it had to open a new connection.

With the introduction of GIOP, this restriction is no longer valid, and either side of the ORB could send any message on the connection initiated by the connection.

Client and server side ORB responsibilities
Client side ORB responsibility
  • Client-ORB opens a connection to the server-ORB·
  • Client-ORB declares to the server that the connection opened is bi-dir capable
  • This is done, on the wire, by sending a service-context containing all the listen end-points that it wants to expose to the server through that connection. The bi-dir service context actually contains a list of host-port pairs which the server can reach using this connection.
  • The client application programmatically can indicate to the client-ORB that it should open bi-dir connection by setting the Bidirectional Policy. Its values could be “NORMAL”, which is the default case indicating no bi-dir support, or “BOTH”, indicating that the client should open bi-dir connections to the server.
  • In VBC, this can also be achieved through configuration property by setting vbroker.orb.enableBiDir to “client” or “both”
  • Further more, programmatically, to specify which CORBA objects need to be exposed through a bi-dir connection, Bidirectional Policy (value = BOTH) can also be specified on the POA. This would make the POA expose all objects contained in it to be exposed.
  • In VBC along with setting the POA policy, the server connection manager of the server engine, which the POA will be associated with also should be set to expose its listen points. Specifying the property vbroker.se.xxx.scm.yyy.manager.exportBiDir to true does this. Please note that if this property is not set, and vbroker.orb.enableBiDir is either “client” or “both”, then again, this SCM will be exposed.
  • All the requests that the client sends to the server on this connection will have even numbered request Id.
Server side ORB responsibility
  • If the server is bi-dir capable, then on reading the bi-dir service context on a request from the client, it should understand that the client is bi-dir capable, and try to use the same connection for all invocations from the server back to the client. In other words, if the server intends on making an invocations to objects hosted on the listen points as enumerated by the bi-dir service context, then instead of opening new connections to these end-points while making requests, it should reuse the client initiated connection
  • In VBC, to enable the server for bi-dir capability, the property vbroker.se.xxx.scm.yyy.manager.importBiDir should be set to true. This allows the particular SCM to enable the server to reuse the connection. If this property is not set, but the property vbroker.orb.enableBiDir is set to “server” or “both”, then again, this feature is enabled. If both these properties are false, the server will never honor client’s bi-dir capability.VisiBroker for C++ Implementation
VisiBroker for C++ Implementation

12 Comments:

Blogger Taibai Li said...

huangqihang0603fitflops outlet
michael kors handbags
michael kors bags
kate spade uk
ralph lauren outlet
oakley sunglasses
michael kors outlet
chanel handbags
true religion outlet
chanel online shop
ray ban uk
christian louboutin outlet
burberry sale
abercrombie outlet
kate spade
fitflops sale clearance
gucci outlet online
michael kors
gucci uk
tory burch outlet online
ralph lauren
toms shoes
burberry outlet online
coach outlet online
oakley sunglass
ray ban outlet
nike air max
ray bans
ray ban sunglasses
michael kors outlet online
oakley sunglasses wholesale
chanel outlet
michael kors handbag
true religion
toms outlet
q

2:52 PM  
Blogger ninest123 Ninest said...

ninest123 10.27
tiffany jewelry, michael kors outlet, oakley sunglasses wholesale, ugg boots, louis vuitton, jordan shoes, nike air max, burberry outlet, uggs outlet, prada outlet, louis vuitton, ugg boots, louis vuitton outlet, michael kors outlet store, ray ban sunglasses, louis vuitton outlet, replica watches, replica watches, uggs outlet, michael kors outlet, polo ralph lauren outlet online, nike free, ray ban sunglasses, oakley sunglasses, christian louboutin outlet, michael kors outlet online, longchamp outlet, louis vuitton outlet, christian louboutin, tiffany and co, prada handbags, cheap oakley sunglasses, polo outlet, longchamp outlet, tory burch outlet, longchamp outlet, nike outlet, oakley sunglasses, oakley sunglasses, ray ban sunglasses, christian louboutin shoes, christian louboutin uk, chanel handbags, uggs on sale, burberry handbags, nike air max, kate spade outlet, michael kors outlet online

9:46 AM  
Blogger ninest123 Ninest said...

hollister uk, nike roshe run uk, sac longchamp pas cher, nike air max uk, north face, vans pas cher, michael kors, kate spade, nike blazer pas cher, longchamp pas cher, ray ban uk, nike free run, abercrombie and fitch uk, louboutin pas cher, coach outlet store online, timberland pas cher, nike roshe, north face uk, polo ralph lauren, oakley pas cher, nike air max, sac vanessa bruno, hollister pas cher, polo lacoste, true religion outlet, ralph lauren uk, nike tn, sac hermes, ray ban pas cher, coach outlet, jordan pas cher, michael kors, coach purses, nike air force, true religion jeans, lululemon canada, michael kors pas cher, mulberry uk, nike air max uk, true religion outlet, burberry pas cher, michael kors outlet, nike free uk, converse pas cher, coach outlet, hogan outlet, new balance, guess pas cher, true religion outlet, air max

9:46 AM  
Blogger ninest123 Ninest said...

bottega veneta, new balance shoes, nike air max, soccer jerseys, louboutin, giuseppe zanotti outlet, lululemon, mac cosmetics, vans, nike trainers uk, vans outlet, abercrombie and fitch, reebok outlet, nike air max, converse, iphone 6 cases, insanity workout, ghd hair, hollister clothing, converse outlet, oakley, nfl jerseys, baseball bats, herve leger, gucci, nike huaraches, mont blanc pens, north face outlet, ferragamo shoes, valentino shoes, north face outlet, p90x workout, longchamp uk, nike roshe run, soccer shoes, wedding dresses, timberland boots, hollister, hermes belt, hollister, ralph lauren, jimmy choo outlet, chi flat iron, asics running shoes, ray ban, instyler, mcm handbags, beats by dre, celine handbags, babyliss, gucci handbags, michael kors outlet online

9:48 AM  
Blogger ninest123 Ninest said...

toms shoes, ugg, ugg uk, moncler, moncler, juicy couture outlet, hollister, ugg,uggs,uggs canada, michael kors outlet online, canada goose outlet, lancel, wedding dresses, moncler outlet, canada goose, swarovski, barbour uk, moncler, canada goose outlet, louis vuitton, ugg,ugg australia,ugg italia, louis vuitton, moncler uk, louis vuitton, ugg pas cher, louis vuitton, montre pas cher, links of london, marc jacobs, barbour, louis vuitton, canada goose uk, michael kors handbags, canada goose outlet, pandora charms, supra shoes, replica watches, canada goose, juicy couture outlet, coach outlet, karen millen uk, moncler outlet, moncler, pandora uk, doudoune moncler, thomas sabo, swarovski crystal, pandora jewelry, canada goose jackets, michael kors outlet, canada goose, doke gabbana, pandora jewelry
ninest123 10.27

9:49 AM  
Blogger 艾丰 said...

jianbin1219
longchamp outlet
true religion sale
true religion outlet
fitflops shoes
fitflops sale
fitflops sale clearance
fitflops sale
fitflops shoes
michael kors outlet
michael kors outlet
michael kors outlet
tiffany and co
tiffany jewellery
beats by dr dre
beats by dre
oakley sunglasses
oakley sunglasses
ray-ban sunglasses
ray ban sunglasses
hollister uk
lululemon outlet
ugg outlet
ugg boots
ugg boots
rolex watches
mulberry handbags
mulberry bags
mulberry outlet
mulberry sale
mulberry handbags
mulberry handbags
louis vuitton handbags
louis vuitton handbags
toms shoes

10:58 AM  
Blogger John said...

coach outlet store online
canada goose jackets
pandora jewelry
michael kors outlet online
cheap oakley sunglasses
michael kors outlet
michael kors outlet online
uggs outlet
toms outlet
christian louboutin outlet
louis vuitton
nike roshe run
canada goose outlet
ugg boots outlet
abercrombie outlet
louis vuitton outlet online
coach outlet
coach factory outlet
nike air huarache
cheap ugg boots
replica watches for sale
retro jordans
hollister kids
ugg outlet store
michael kors outlet online
hollister
ed hardy clothing
gucci shoes
toms
ugg boots
oakley sunglasses
20151226yuanyuan

11:07 AM  
Blogger oakleyses said...

christian louboutin uk, louis vuitton outlet, christian louboutin shoes, michael kors pas cher, louis vuitton outlet, sac longchamp pas cher, prada handbags, gucci handbags, tiffany and co, polo ralph lauren outlet online, christian louboutin outlet, cheap oakley sunglasses, longchamp outlet, uggs on sale, polo outlet, louis vuitton, nike air max, oakley sunglasses, longchamp outlet, nike free, nike outlet, longchamp outlet, longchamp pas cher, chanel handbags, nike air max, oakley sunglasses, nike free run, tiffany jewelry, oakley sunglasses wholesale, louboutin pas cher, ray ban sunglasses, ugg boots, replica watches, air max, louis vuitton outlet, oakley sunglasses, nike roshe, louis vuitton, tory burch outlet, ray ban sunglasses, jordan shoes, christian louboutin, prada outlet, polo ralph lauren, burberry pas cher, ugg boots, jordan pas cher, kate spade outlet, ray ban sunglasses

8:39 AM  
Blogger oakleyses said...

nike blazer pas cher, mulberry uk, burberry handbags, michael kors, timberland pas cher, oakley pas cher, ray ban uk, vans pas cher, coach purses, north face, nike free uk, new balance, ray ban pas cher, sac hermes, michael kors, nike air force, ralph lauren uk, nike air max, kate spade, nike roshe run uk, true religion jeans, north face uk, hogan outlet, michael kors outlet online, nike air max uk, uggs outlet, nike tn, burberry outlet, hollister uk, coach outlet store online, replica handbags, lululemon canada, michael kors outlet online, michael kors outlet online, michael kors outlet, michael kors outlet online, converse pas cher, michael kors outlet, true religion outlet, true religion outlet, polo lacoste, hollister pas cher, coach outlet, guess pas cher, true religion outlet, abercrombie and fitch uk, nike air max uk, sac vanessa bruno, michael kors outlet

8:41 AM  
Blogger oakleyses said...

hollister, oakley, celine handbags, instyler, nike trainers uk, ghd hair, converse outlet, hollister clothing, hermes belt, beats by dre, ray ban, lancel, herve leger, timberland boots, nike air max, chi flat iron, longchamp uk, asics running shoes, vans, nike air max, insanity workout, reebok outlet, giuseppe zanotti outlet, abercrombie and fitch, nike roshe run, north face outlet, louboutin, jimmy choo outlet, iphone cases, gucci, mcm handbags, north face outlet, valentino shoes, soccer shoes, hollister, wedding dresses, babyliss, bottega veneta, baseball bats, p90x workout, nfl jerseys, nike huaraches, new balance shoes, soccer jerseys, mont blanc pens, ralph lauren, vans outlet, mac cosmetics, ferragamo shoes, lululemon

8:44 AM  
Blogger oakleyses said...

hollister, louis vuitton, moncler outlet, pandora uk, moncler, canada goose outlet, ugg,ugg australia,ugg italia, marc jacobs, toms shoes, moncler outlet, louis vuitton, canada goose, swarovski crystal, supra shoes, moncler, ugg, juicy couture outlet, wedding dresses, thomas sabo, karen millen uk, ugg pas cher, canada goose jackets, pandora jewelry, louis vuitton, moncler, swarovski, pandora jewelry, links of london, moncler uk, louis vuitton, coach outlet, ugg uk, canada goose uk, ugg,uggs,uggs canada, canada goose, doudoune moncler, louis vuitton, pandora charms, juicy couture outlet, canada goose outlet, canada goose outlet, canada goose, moncler, replica watches, montre pas cher

8:47 AM  
Blogger Liu Liu said...

Nick Saban’s relatively brief time as head coach of the Miami Dolphins is not looked upon fondly by most fans of the team. He went 15-17 christian louboutin shoes in his two seasons, but basically quit on the nfl jerseys store team in the final weeks Nike Air Max 90 of the 2006 season, focused more on his next job, at the University of Alabama, instead of the one he christian louboutin uk was under contract for.And at least one player who played – or at Christian Louboutin Women Flat least practiced – under Saban during those ill-fated christian louboutin men flat final weeks Nike Roshe Run hasn’t forgotten NFL Jerseys how Nike Free Run he was louboutin outlet treated. According to Nike Air Max 2015 Shoes receiver P.K. Sam, a journeyman cheap nfl jerseys who spent time with five NFL teams as well as two CFL clubs, Saban cut wholesale nfl jerseys him after he left the team christian louboutin Panettone spiked leather wallet briefly to see his dying father

2:51 PM  

Post a Comment

<< Home