Python pycurl 模块，INFILESIZE 实例源码

def put (url, data, headers={}):
    """Make a PUT request to the url, using data in the message body,
    with the additional headers, if any"""

    reply = -1 # default, non-http response

    curl = pycurl.Curl()
    curl.setopt(pycurl.URL, url)
    if len(headers) > 0:
        curl.setopt(pycurl.HTTPHEADER, [k+': '+v for k,v in headers.items()])
    curl.setopt(pycurl.PUT, 1)
    curl.setopt(pycurl.INFILESIZE, len(data))
    databuffer = StringIO(data)
    curl.setopt(pycurl.READFUNCTION, databuffer.read)
    try:
        curl.perform()
        reply = curl.getinfo(pycurl.HTTP_CODE)
    except Exception:
        pass
    curl.close()

    return reply

def __init__(self, uploader):
        self.handle = pycurl.Curl()
        self.response_headers = {}
        self.output = six.StringIO()
        self.status_code = None

        self.handle.setopt(pycurl.CAINFO, certifi.where())
        self.handle.setopt(pycurl.URL, uploader.url)
        self.handle.setopt(pycurl.HEADERFUNCTION, self._prepare_response_header)
        self.handle.setopt(pycurl.UPLOAD, 1)
        self.handle.setopt(pycurl.CUSTOMREQUEST, 'PATCH')

        self.file = uploader.get_file_stream()
        self.file.seek(uploader.offset)
        self.handle.setopt(pycurl.READFUNCTION, self.file.read)
        self.handle.setopt(pycurl.WRITEFUNCTION, self.output.write)
        self.handle.setopt(pycurl.INFILESIZE, uploader.request_length)

        headers = ["upload-offset: {}".format(uploader.offset),
                   "Content-Type: application/offset+octet-stream"] + uploader.headers_as_list
        self.handle.setopt(pycurl.HTTPHEADER, headers)