Is there a way to consume REST based pdf web service in PeopleSoft

Question

We have a requirement to consume an pdf REST based web service in PeopleSoft and display the pdf file on browser. I have configured the Service & Service Operation in PeopleSoft.
I have also confirmed the request is making to target server. Also when using curl, confirm the target web service is working  and response seems to be binary bytes representing pdf file.
How can I consume this response from PeopleSoft message object. Tried using contentstring() and trying to do %response.write
   &getrpt_RESP = %IntBroker.SyncRequest(&MSG);
   &strresponse = &getrpt_RESP.GetContentString();
   %response.write(strresponse );
/* Open a file.pdf* - to do/
/* Write the response from message to file - to do */
/*Use view attachment to open the file on browser - to do*/
But this returns nothing on browser.
If I had to copy pdf file, I normally would use something like
   Local JavaObject &in = CreateJavaObject("java.io.FileInputStream", &SrcFullPath);
   Local JavaObject &out = CreateJavaObject("java.io.FileOutputStream", &filepath);
   Local JavaObject &buf = CreateJavaArray("byte[]", 1024);
   Local number &byteCount = &in.read(&buf);
   While &byteCount > 0
      &out.write(&buf, 0, &byteCount);
      &byteCount = &in.read(&buf);
   End-While;
But I am failing to find a way to copy the bytes from message to a file?
Any help is appreciated!

Answer 1

Integration Broker supports MTOM. You can find an example here: Sending and Receiving Binary Data.
The alternative is to use Java to make the HTTP request. You can use HttpClient, as Sasank mentioned, if you don't mind managing jar dependencies. The alternative is to use HttpUrlConnection directly. Not easy in PeopleCode, but possible. If you are on PeopleTools 8.53, then you can script it in JavaScript and run it on the server through the Rhino JavaScript script engine manager included with Java 7 and part of PeopleTools 8.53+. I find this MUCH easier because you don't have to deal with reflection.
Once you get the binary file, the next task is sending it to the client in binary format. %Response.WriteBinary works great, but requires you to start with binary data. I am only aware of one way to read binary data in PeopleCode that is suitable for %Response.WriteBinary and that is to select the binary data out of the database and into an Any variable. I have not figured out how to convert Java binary data into something suitable for PeopleCode's %Response.WriteBinary.