West Wind Client Tools
GZipCompressString, Post
Gravatar is a globally recognized avatar based on your email address. GZipCompressString, Post
  Todd Landrum
  All
  Apr 10, 2017 @ 02:19pm

I'm attempting to POST a file to an API that requires the file to be GZip. The file uploads correctly (I can see the file on the website interface), but I get back an error of "The magic number in GZip header is not correct. Make sure you are passing in a GZip stream." when I ask the API to process it. Am I doing something wrong in the zipping? Something wrong in my posting?

	SET PROCEDURE TO prog\wwAPI Addi
	LOCAL lcZip
	lcZIP = GZipCompressString(lcItemJSON)
	STRTOFILE(lcZip, "item.json.gz")
	
	* Upload it. 
	oHTTP2 = CREATEOBJECT("wwHTTP")
	oHTTP2.cHTTPVerb = "PUT"
	oHttp2.nHttpPostMode = 1
	oHTTP2.AppendHeader("x-ms-blob-type", 	"blockblob")
	oHttp2.AddPostKey("File", SYS(5) + CURDIR() + "item.json.gz", .t.)
	lcReturn = oHTTP2.HttpGet(lcUploadURL)

Gravatar is a globally recognized avatar based on your email address. re: GZipCompressString, Post
  Rick Strahl
  Todd Landrum
  Apr 10, 2017 @ 05:48pm

How are you supposed to push the file to the server? Pretty sure the format you're using is not correct.

Is the data supposed to be in raw format? If so just send the raw text - not a post variable as you are. Set the content type to whatever the data format is:

oHttp2.ContentType = "application/json"
oHttp2.AddPostKey(lcZip)

This sends the raw data not a form variable.

If the data protocol multi-part form then you need to make sure the mode is set to 2.

More info here:

+++ Rick ---

Gravatar is a globally recognized avatar based on your email address. re: GZipCompressString, Post
  Todd Landrum
  Rick Strahl
  Apr 11, 2017 @ 07:19am

The spec says to upload a file, but you were right -- just send the raw data. Huge thank you for pointing me in the right direction.

Here's the working code for anyone interested (this is for the Jet.com file upload for MerchantSkus):

oHTTP2 = CREATEOBJECT("wwHTTP")
oHTTP2.cHTTPVerb = "PUT"
oHttp2.cContentType = "application/json"
oHttp2.AddPostKey(lcZip)
oHTTP2.AppendHeader("x-ms-blob-type", 	"blockblob")
lcReturn = oHTTP2.HttpGet(lcUploadURL)

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