Proxy
Proxies communicate with the XI server by means of native SOAP calls over HTTP .RFC does not, so you have to convert from SOAP to RFC calls and vice versa. So XML conversion is required.
ABAP Proxies uses Webservice and Http Protocols. And if you use RFC it is mainly meant for Sync. call. But Proxies is used for both Sync and Async.
If you use ABAP Proxy , you can reduce the overhead calling the function again and again.
/people/vijaya.kumari2/blog/2006/01/26/how-do-you-activate-abap-proxies - Activate Proxy
If u generate proxy for outbound interface then its client proxy and for inbound interface its server proxy.
In client proxy u can call the method to send messages but u can't modify it but in server proxy its possible to write a user code within the method to execute proxy.
CLIENT PROXY:
A WSDL description from a UDDI server (or an Internet page) is usually used to make a service executable in the Internet and to describe the interface of this service. You require a client proxy and not a server proxy to call this service by using the Web service infrastructure.
SERVER PROXY:
You can only generate ABAP server proxies from a WSDL description if they originate in the Integration Repository.You can also generate server proxies for Java and client proxies for ABAP from message interfaces.
If you are using Client ABAP proxy (Sender Proxy), then it is not required. If you are using Server proxy, then it is required.
You can see list of adapters which requires sender agreement-manadatory sender agreements
http://help.sap.com/saphelp_nw2004s/helpdata/en/b1/f29e7a56e18a439984a3c6630951d2/content.htm
The use of adapter here is to communicate the Integration Server with respective ApplcatioN System. ie, R.3 or any SAP system which is configured as an Application System to the XI.
Proxies communicate with the XI server by means of native SOAP calls over HTTP . SO you need to mention the integration server to point/connect to correct application system during runtime.
http://help.sap.com/saphelp_nw2004s/helpdata/en/85/78af1bf407434796aaf8dbd6d4e7b7/content.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/e1/091640a991c742e10000000a1550b0/frameset.htm
ABAP:
/people/ravikumar.allampallam/blog/2005/03/14/abap-proxies-in-xiclient-proxy
/people/siva.maranani/blog/2005/04/03/abap-server-proxies
JAVA:
/people/prasad.ulagappan2/blog/2005/06/27/asynchronous-inbound-java-proxy
/people/rashmi.ramalingam2/blog/2005/06/25/an-illustration-of-java-server-proxy
SOAP and HTTP:
SOAP Adapter :
"How To… Set Up a Web- Service- Related Scenario with SAP XI"
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/336365d3-0401...
also these weblogs can give you a view where you can use SOAP adapters
EP-XI Integration using Web Services and Web Dynpro MVC
https://www.sdn.sap.com/sdn/weblogs.sdn?blog=/pub/wlg/1334 [original link is broken] [original link is broken] [original link is broken] [original link is broken]
Looking for replacing SAP.NET connectors with SAP XI?
https://www.sdn.sap.com/sdn/weblogs.sdn?blog=/pub/wlg/2131 [original link is broken] [original link is broken] [original link is broken] [original link is broken]
http://help.sap.com/saphelp_nw04/helpdata/en/fc/5ad93f130f9215e10000000a155106/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/29/5bd93f130f9215e10000000a155106/content.htm
https://www.sdn.sap.com/sdn/weblogs.sdn?blog=/pub/wlg/1340. [original link is broken] [original link is broken] [original link is broken] [original link is broken]
When you want to Send Data to XI from a Webservice and vice versa, your SOAP adapter is used.
Check these links for reference...
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/d23cbe11-0d01-0010-5287-873...
/people/siva.maranani/blog/2005/09/03/invoke-webservices-using-sapxi
Pls find following links for the SOAP..
/people/padmankumar.sahoo/blog/2005/02/15/an-overview-of-soap
/people/siva.maranani/blog/2005/03/01/testing-xi-exposed-web-services
For Http Adapter-
http://help.sap.com/saphelp_nw2004s/helpdata/en/0d/5ab43b274a960de10000000a114084/frameset.htm
Sending a Simple SOAP envelope to XI via HTTP using ASP
https://www.sdn.sap.com/sdn/weblogs.sdn?blog=/pub/wlg/1442 [original link is broken] [original link is broken] [original link is broken] [original link is broken]
More links for SOAP Adapter:
http://help.sap.com/saphelp_nw04/helpdata/en/69/a6fb3fea9df028e10000000a1550b0/frameset.htm
More links on HTTP adapters.
/people/siva.maranani/blog/2005/09/15/push-data-to-mvc-architectured-application-using-xi
/people/prasadbabu.nemalikanti3/blog/2006/02/27/collecting-and-bundling-vendor-records-from-different-multiple-interfaces-file-systempeoplesoft-and-sending-to-sap-r3-system-part-2
thanks
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