Cannot save a session

[brownmk]

Hi, I implement SessionClient.save() method as below

def save(self, file_name=None):
    print file_name
    r=requests.post(self.__url, data=json.dumps({'file': file_name}), headers={'Content-Type': 'application/json'})
    print r.content

But it does not seem to work, looks like Cytoscape does not pick up the file name parameter. Do you have any suggestions? I check the cyREST source code, it simply reads the "file" parameter, looks fine there. Thanks a lot for your helps!
=== Output from the method ===
c:\Temp\test.cys
{"cause":{"cause":null,"stackTrace":[{"methodName":"","fileName":null,"lineNumber":-1,"className":"java.io.File","nativeMethod":f
alse},{"methodName":"createSessionFile","fileName":"SessionResource.java","lineNumber":143,"className":"org.cytoscape.rest.internal.res

[brownmk]

Okay, I believe this is related to a problem with cyREST implementation.
In SessionResource.java, line 140
It reads the file name using QueryParam("file"). This probably is not right and should ideally be fixed.

As the result, the symptom is:
The following works, as file parameter is part of the URL:
requests.post("http://localhost:1234/v1/session?file=c:/Temp/t2.cys")
The following fails, b/c file parameter is sent in the body
requests.get("http://localhost:1234/v1/session", data=json.dumps({'file':'c:/Temp/t2.cys'}))