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simple python comet client
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| import email.utils # for rfc2822 formatted current timestamp | |
| import requests | |
| class CometClient(object): | |
| def __init__(self, last_modified=None): | |
| if last_modified is None: | |
| self.last_modified = email.utils.formatdate() | |
| else: | |
| self.last_modified = last_modified | |
| self.etag = 0 | |
| def listen(self, url): | |
| while True: | |
| self._get_request(url) | |
| def _get_request(self, url): | |
| try: | |
| resp = requests.get(url, headers={ | |
| 'If-None-Match': str(self.etag), | |
| 'If-Modified-Since': str(self.last_modified)}) | |
| self.last_modified = resp.headers['Last-Modified'] | |
| self.etag = resp.headers['Etag'] | |
| self.handle_response(resp.content) | |
| except requests.exceptions.Timeout: | |
| pass | |
| def handle_response(self, response): | |
| print response | |
| if __name__ == '__main__': | |
| import sys | |
| comet = CometClient() | |
| comet.listen(sys.argv[1]) |
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