CU1 for BizTalk Server 2013R2 contains a fix for this but I have not tried the SFTP receive adapter with zero bytes files.
How do other adapters behave with zero byte files? The SFTP adapter cannot send zero-byte file. Now what happens if we subscribe to this receive port with a send port that uses file adapter and a pass through pipeline? The zero byte file gets written to the destination folder. This is annoying if you are not using a pass through pipeline because invariably the zero byte file will error in the pipeline. This is OK because it shows that the zero byte file has got into the message box. This time the file suspends in BizTalk Server the group hub because I had no subscription to this receive port.
What does the BizTalk Server FTP adapter do if it picks up a zero byte file? Let’s set up a receive location with a FTP adapter and pick up the same zero byte file as shown below In many cases I have had applications that randomly create zero byte files and the design of the BizTalk Server has been a god send because I do not have to implement any special pipeline component to handle this situation. Why would you want to process a zero byte file? In most cases this is an annoyance because a zero byte would fail in any pipeline that contains a XML Disassembler. Many people have wanted to process zero byte files. The File receive adapter deletes zero byte files by design. The FILE receive adapter deleted the empty file “D:\brimble1\Test\zero.xml” without performing any processing. If we drop zero-byte file above into the pick up folder the following warning is recorded in the event log. Second let’s set up a receive location that uses a file adapter as shown below. If you open the file in a binary editor it looks like this. I created my test file by opening notepad and saving as an XML file without adding anything to it. I am using BizTalk Server 2013 R2 with CU2 for these tests.įirst let’s make it clear what zero byte file I used for my testing. This post summarises what happens when some BizTalk Adapters picks up a zero byte file.
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