Synchron communication via Socket

Hi everyone,
Is there a way to make TCP Sockets communicate in a synchron manner?
I mean, I send a message over a socket and be blocked until I receive
the answer.
(PS: I don't want to use any other API (like RMI, or JMS or etc etc).
I ask, whether the Socket implementation in java.net package can do
this implicitly.)
Thank you very much

No no, this is not a ServerSocket anyway. Assume there is just
one Socket that is already connected.
I send a message, i.e. I call for example
outputstream.println("....");
where 'outputstream' is the Stream that I obtained using my socket.
Normally my code continues to run after that line. If I expect
an answer, I receive it via an "response from the other side- event".
But for example consider RMI. If I call a method of a remote object,
Object o = remoteobj.aMethod();
then my thread is blocked until I receive a response from the
remoteobj. I do not have to listen to an additional event, everything
is done synchronously.
I want to do the same thing as RMI with my socket (outputstream).
I want my code to be blocked until I receive an answer from the
other side.
That was my question.
Best Regards
I mean, I send a message over a socket and beblocked
until I receive
the answer.Do you mean by being blocked you do not have a socket
listening anymore to make additional connections?

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Aynchronous and Synchronous communication TCP socket

Hi All,
I have written a client/server test application to test the performance of the java socket library. I tested the application in two scenarios,
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2) Synchronous communication between client and server, client sends data (again, packet size is 500bytes) and waits for the server response (all server responds is OK (1 byte data)). The amazing thing in this test was the performance went down drastically!!! it came down to 5-10kb/sec, which is unbelievably nonsense or I am doing something nonsense.
code snippet (server side)
//reading from the socket (tried both buffered and non-buffered )
inputstream = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
//writing to the outputstream of the socket (server side)
outstream = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream))
//then flush the data, in case
client side code is very simple,
while(not EOF)
outputstream.write(buffer); //buffer size is 500bytes, as I mentioned above
if(synchronous)
wait for server response, otherwise don't
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I would greatly appreciate any help on this.
Platform used: JDK 1.3.1, WIN2K.

I have to break it up because that's how it's done in the real application. The test application that I have written is just part of the product that I am working on.
To give you the background, we have C++ product where we are porting server side of the whole product to java.
The client(which is written in c++) sends data(which is basically attributes), of size 500bytes in every request. The no. of request depends on how big the model(3D Model) is. In case of very huge models (will have MBs of attributes) the client takes long time to send all the attributes, which is the case with java server (client still in c++). But the in case c++ server it doesn't make any difference, the data transfer rate is same no matter how big the model is.
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thanks,
Ganesh

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DatagramPacket dp = new DatagramPacket(buffer, buffer.length,
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vivian

Hi Vivian
I don't know what you mean by "prototype BPM", but I don't think you need a BPM in this scenario.
If I understand you correctly, the flow is as follows:
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4. Synchronous response propagates back the opposite way.
In this case, there is no need for a BPM.
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RFC destination for synchronous communication (message type SYNCH)

Hi experts,
I am trying to configuare ALE settings.waht i did is
My sending & receiving systems are one server with different clients.By using SALE transaction
1.crated logical systems.(LS_800 &LR_810)
2.Assigned those to clients.
3.Created RFC destination
4. Created modelview assign sending & receiving
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Target system LR_810
RFC destination for synchronous communication (message
type SYNCH)
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specify outbound partner profiles for message type
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Hi Shital;
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Hi,
I am doing a scenario from SOAP to RFC scenario(Synchronous communication). Here I am creating a PM Notification in the SAP system through a webservice.
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Thanks in Advance,
Vijay
p.s. reward points are must

Hi Vijay,
Yes, You will indeed need a BPM in this case...
Based on my understanding of the Scenario u have explained, here are the steps that would be needed.
1. Receive With the Sync-Async Bridge open.
2. Transformation Step (Between the source Request and The BAPI_ALM_NOTIF_CREATE Request)
3. Send Synchronous
4. Fork
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7. Send Synchronous (to make the 2nd BAPI Call)
6. Transformation ( BAPI_ALM_NOTIF_SAVE Response and the source Response)
7. Send Asynchronous (to make the 3rd BAPI call)
8. Send the Source Response and close the Sync-Async Bridge.
There might be alternative ways also of doing it...
Also a better design would be to take care of the 2nd and the 3rd BAPI call within the code of the 1st RFC Function Module.
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Abhy Thomas

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Hello,
One of our Sender JMS synchronous communication channel (used Sync/Async bridge in the module section to make it Synchronous) is not picking up files from JMS system though the channel looks to be active (greeen).
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Messages available in JMS system? please check queue's if message were there and it is not picking up then some thing wrong with cc.
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I need to send a message via socket from a C program to a Java program. The message has three data: a long, an integer and a string.
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[IDoc to SOAP Synchronous with BPM|http://wiki.sdn.sap.com/wiki/display/XI/IDoctoSOAPSynchronouswith+BPM]
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Hi
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Hi Vijay,
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Please let me know if you have any queries..!
Thanks and Regards,
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null
null

Synchronous communication of JDBC adapter with BPM

Hello XI-Experts,
Could you please give me example where BPM is having a Synchronous communication with JDBC adapter??
plz do help.
Thanks & Regards,
Vanita

Vanita,
Let's consider the below scenario.
A File contains the SQL query, you need to fetch the data from DB system using that SQL query and write it to a file. You can configure like below
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Mapping Transformation to create the SQL request
Call DB using JDBC adapter Synchronously
Mapping Transformation to Convert the Response from DB and write it to a file.
Does it seems to be a valid scenario you are looking for? Any questions let us know.
If you are looking for any blogs then check below:
Synchronous JDBC: /people/bhavesh.kantilal/blog/2006/07/03/jdbc-receiver-adapter--synchronous-select-150-step-by-step
File-RFC-File: /people/arpit.seth/blog/2005/06/27/rfc-scenario-using-bpm--starter-kit
~Raj.

Synchronous Communication between two Decoupled Orchestration

Hi All,
Is there a way I can achieve synchronous communication between 2 orchestrations (decoupled orchestrations) where I need to pass multiple parameters from calling orchestration to called orchestration.
Thanks,
Sumit
Sumit Verma - MCTS BizTalk 2006/2010 - Please indicate "Mark as Answer" or "Mark as Helpful" if this post has answered the question

Hi Sumit,
if you have hundreds of orchestration means lot of small small business processes which are tightly coupled...
It is better to publish process / orchestration as service so it will SOA base ..it will work isolate. but remember if you publish more web base service. it will be burden on IIS. we have only one Host instance to handle..we can't create more host
instance to handle like in-process host in one server..we have to go for cluster environment..so first approach will be window base service (if possible achieve business process ) to handle by in-process host instance.
If you have many small small services then we need one master service to watch/process all the services.
Exmaple...
Like one process A, need to execute five small services/processes a1,b1,a2,c1,c3
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Suman

IDOC-- JDBC server with synchronous communication.

Hi SAP PI Experts,
we have requirement as per the below. could you suggest the best possible way to execute this below.
we need to send the outbound IDOC to JDBC and reponse file from JDBC should be posted to ECC in IDOC format.
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please advise the best possible solution in PI 7.1
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Krushi.

IDoc not supports Sync communication but JDBC Receiver channel supports it.
if you have any limitation like not to use ccBPM then 2 options
1)Change IDoc to ABAP Client Proxy ,Proxy supports sync communication.
2)IDoc-->PI(JDBC Lookup)--->IDoc(recv).
if the response message from JDBC is not huge then try option 2.
Regards,
Raj

Whats the difference between sending messages via socket and MQs?

Whats the difference between sending messages via socket and MQs?

Soph wrote:
Whats the difference between sending messages via socket and MQs?With JMS (and the like) your application uses a socket to connect to a central server called a "*Message Broker*". Over this connection it can send or receive messages.
A Message Broker is somewhat analogous to a database server. Multiple clients connect to it to exchange messages. As with a database a client first establishes a connection, then requests specific facilities like subscriptions.
It creates a strong decoupling between sender and receiver and handles stuff like allowing multiple receivers for the same message, queuing of messages for applications not currently running and so on.
(And don't worry, you can get perfectly good message brokers for free such as openMQ and activeMQ.)

Regaring Synchronous communication and ASynchronous Commu

Hi,
Can any please describe me for the above Synchronous communication and ASynchronous Commu. Please don't send any weblogs.. Or Documentations please type the answers in simple language just to understand excatly.
1. when to use these.
2. where to use..
3. How its Usefull

Hi,
When you make a synchronous call i.e the message is sent, the receiving system is active and can accept the call and further process it if necessary.
It is advantageous in a scenario which requires immediate return of data to the sender system.
One example would be where, you create a purchase order with account assignment in the sender system, and you want to perform a budget check in central accounting before you save the purchase order.
A disadvantage would be that both systems are required to be active.
In Asynchronous communication the receiving system does not necessarily have to be available at the time a function call is dispatched from the sender system. The receiving system can receive and process the call at a later time. If the receiving system is not available, the function call remains in the outbound queue of the sending system, from where the call is repeated at regular intervals until it can be processed by the receiving system.
An example would be, you are sending a purchase order to a vendor system. The sending system cannot influence the availability of the receiving system. If the receiving system is not available, the purchase order can be sent repeatedly until the vendor system is available again.
The obvious advantage of async communication is that the receiving system does not have to be available at the time the function call is made and the disadvantage is that processes that require an immediate response to the sender system cannot be executed using this method.
Hope this gives a clear idea of sync n async communication.
Regards,
Chandra

Synchron communication via Socket

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