CkPython

Send a Staged REST Request with No Body

Demonstrates Rest.SendReqNoBody, which sends a request without a body as the first step of the staged request model. After it succeeds, the response header and body are read separately.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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import sys
import chilkat

success = False

rest = chilkat.CkRest()
bTls = True
bAutoReconnect = True
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
if (success == False):
    print(rest.lastErrorText())
    sys.exit()

#  Send a request without a request body.  This is a low-level send: after it succeeds, read the
#  response header and body separately.
success = rest.SendReqNoBody("GET","/api/items/123")
if (success == False):
    print(rest.lastErrorText())
    sys.exit()

#  After sending, read the response status line and header fields.  The return value is the HTTP
#  status code, or -1 if no response was received.
statusCode = rest.ReadResponseHeader()
if (statusCode < 0):
    print(rest.lastErrorText())
    sys.exit()

print("Response status code: " + str(statusCode))

#  Read the response body as text.
responseBody = rest.readRespBodyString()
if (rest.get_LastMethodSuccess() == False):
    print(rest.lastErrorText())
    sys.exit()

print(responseBody)