def retrieveCaptureFileForAssignedPorts(connection, sessionUrl, captureFolder):
    '''
        This method is used to retrieve capture files from a rest session which had portCapture set to True.

        Args:
        - connection is the connection object that manages the HTTP data transfers between the client and the REST API
        - sessionUrl is the address of the session on which the test was ran.
        - captureFolder is the folder where the capture file will be saved

    '''
    communtiyListUrl = "%s/ixload/test/activeTest/communityList" % sessionUrl
    communityList = connection.httpGet(communtiyListUrl)
    captureFolder = captureFolder.replace("\\\\", "\\")


    for community in communityList:
        portListUrl = "%s/%s/network/portList" % (communtiyListUrl, community.objectID)
        portList = connection.httpGet(portListUrl)
        for port in portList:
            captureUrl = portListUrl + "/%s/restCaptureFile" % port.objectID
            capturePayload = connection.httpRequest('GET', captureUrl, downloadStream=True)
            captureName = "Capture_%s_%s.cap" % (community.objectID, port.id)
            captureFile = '/'.join([captureFolder, captureName])
            fileHandle = None
            try:
                with open(captureFile, 'wb') as fileHandle:
                    for chunk in capturePayload.iter_content(chunk_size=1024):
                        fileHandle.write(chunk)
            except IOError:
                log("Could not open or create file, please check path and/or permissions")
                return 2
            finally:
                if fileHandle:
                    fileHandle.close()
    return 0