CkPython

HTTP Download to Stream

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Demonstrates how to stream the response body directly to a stream, which in this case is to a file stream. CkPython

import sys
import chilkat

success = False

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

rest = chilkat.CkRest()

# The URL we want to download is: 
# https://github.com/chilkatsoft/OAuth2-CSharp-Desktop/archive/master.zip
url = chilkat.CkUrl()
url.ParseUrl("https://github.com/chilkatsoft/OAuth2-CSharp-Desktop/archive/master.zip")

# Connect to the web server
bAutoReconnect = True
success = rest.Connect(url.host(),url.get_Port(),url.get_Ssl(),bAutoReconnect)
if (success != True):
    print(rest.lastErrorText())
    sys.exit()

success = rest.SendReqNoBody("GET",url.path())
if (success != True):
    print(rest.lastErrorText())
    sys.exit()

# Read the response header.
responseStatusCode = rest.ReadResponseHeader()
if (responseStatusCode < 0):
    print(rest.lastErrorText())
    sys.exit()

print("Response status code = " + str(responseStatusCode))

# We expect a 200 response status if the file data is coming.
# Otherwise, we'll get a string response body with an error message(or no response body).
if (responseStatusCode == 200):

    bodyStream = chilkat.CkStream()

    # The stream's sink will be a file.
    bodyStream.put_SinkFile("qa_output/OAuth2-CSharp-Desktop/archive/master.zip")

    # Read the response body to the stream.  Given that we've
    # set the stream's sink to a file, it will stream directly
    # to the file.
    success = rest.ReadRespBodyStream(bodyStream,True)
    if (success != True):
        print(rest.lastErrorText())
        sys.exit()

    print("Successfully downloaded the file.")

else:
    errResponse = rest.readRespBodyString()
    if (rest.get_LastMethodSuccess() != True):
        print(rest.lastErrorText())
    else:
        print(errResponse)