CkPython

Parse Multipart Binary Http Response

See more HTTP Examples

This example demonstrates how to parse an HTTP response that is multipart and contains a binary file, such as a .zip or .pdf. 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.

http = chilkat.CkHttp()
req = chilkat.CkHttpRequest()

# ...
# Insert code here to construct some kind of HTTP request.
# this example is to show how to parse a particular kind of response.
# ...
# ...

# Send the request (whatever it may be in your case) to get the HTTP response object.
resp = chilkat.CkHttpResponse()
success = http.HttpSReq("www.somedomain.com",443,True,req,resp)
if (success == False):
    print(http.lastErrorText())
    sys.exit()

# Get the response body (which is expected to be binary)
respBody = chilkat.CkBinData()
resp.GetBodyBd(respBody)

# For this example, the response body contains something like this:

# ------=_Part_21302_2029949381.1547401515443
# Content-Type: application/xop+xml; charset=UTF-8; type="text/xml"
# Content-Transfer-Encoding: 8bit
# Content-ID: <rootpart@ws.jboss.org>
# 
# <env:Envelope xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'><env:Header></env:Header><env:Body>...</env:Body></env:Envelope>
# ------=_Part_21302_2029949381.1547401515443
# Content-Type: application/octet-stream
# Content-Transfer-Encoding: binary
# Content-Id: <fileArchivio-7d302908-4d64-43d3-bf4e-79ce806d43b3@ws.jboss.org>
# 
# BINARY_CONTENT_HERE...
# 
# ------=_Part_21302_2029949381.1547401515443--
# 

# Load it into a Chilkat MIME object.
mime = chilkat.CkMime()
success = mime.LoadMimeBd(respBody)
if (success == False):
    print(mime.lastErrorText())
    sys.exit()

numParts = mime.get_NumParts()
if (numParts < 2):
    print("Expected multipart MIME with at least 2 sub-parts.")
    sys.exit()

# Get the 1st sub-part, which is the XML.

part0 = chilkat.CkMime()
mime.PartAt(0,part0)

# Should be OK because we checked NumParts above..
xmlStr = part0.getBodyDecoded()
print(xmlStr)
print("----")

# Save the 2nd part to a file.  (It is a .zip file in our test case..)

part1 = chilkat.CkMime()
mime.PartAt(1,part1)

success = part1.SaveBody("qa_output/attachedZip.zip")

# Alternatively, we could extract the binary data to a BinData and use elsewhere..
zipData = chilkat.CkBinData()
success = part1.GetBodyBd(zipData)
success = zipData.WriteFile("qa_output/attachedZip_again.zip")

print("OK.")