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19 HTTP_CONTINUE = 100
20 HTTP_SWITCHING_PROTOCOLS = 101
21 HTTP_PROCESSING = 102
22 HTTP_OK = 200
23 HTTP_CREATED = 201
24 HTTP_ACCEPTED = 202
25 HTTP_NON_AUTHORITATIVE = 203
26 HTTP_NO_CONTENT = 204
27 HTTP_RESET_CONTENT = 205
28 HTTP_PARTIAL_CONTENT = 206
29 HTTP_MULTI_STATUS = 207
30 HTTP_MULTIPLE_CHOICES = 300
31 HTTP_MOVED_PERMANENTLY = 301
32 HTTP_MOVED_TEMPORARILY = 302
33 HTTP_SEE_OTHER = 303
34 HTTP_NOT_MODIFIED = 304
35 HTTP_USE_PROXY = 305
36 HTTP_TEMPORARY_REDIRECT = 307
37 HTTP_BAD_REQUEST = 400
38 HTTP_UNAUTHORIZED = 401
39 HTTP_PAYMENT_REQUIRED = 402
40 HTTP_FORBIDDEN = 403
41 HTTP_NOT_FOUND = 404
42 HTTP_METHOD_NOT_ALLOWED = 405
43 HTTP_NOT_ACCEPTABLE = 406
44 HTTP_PROXY_AUTHENTICATION_REQUIRED = 407
45 HTTP_REQUEST_TIME_OUT = 408
46 HTTP_CONFLICT = 409
47 HTTP_GONE = 410
48 HTTP_LENGTH_REQUIRED = 411
49 HTTP_PRECONDITION_FAILED = 412
50 HTTP_REQUEST_ENTITY_TOO_LARGE = 413
51 HTTP_REQUEST_URI_TOO_LARGE = 414
52 HTTP_UNSUPPORTED_MEDIA_TYPE = 415
53 HTTP_RANGE_NOT_SATISFIABLE = 416
54 HTTP_EXPECTATION_FAILED = 417
55 HTTP_UNPROCESSABLE_ENTITY = 422
56 HTTP_LOCKED = 423
57 HTTP_FAILED_DEPENDENCY = 424
58 HTTP_INTERNAL_SERVER_ERROR = 500
59 HTTP_NOT_IMPLEMENTED = 501
60 HTTP_BAD_GATEWAY = 502
61 HTTP_SERVICE_UNAVAILABLE = 503
62 HTTP_GATEWAY_TIME_OUT = 504
63 HTTP_VERSION_NOT_SUPPORTED = 505
64 HTTP_VARIANT_ALSO_VARIES = 506
65 HTTP_INSUFFICIENT_STORAGE = 507
66 HTTP_NOT_EXTENDED = 510
67 REMOTE_DOUBLE_REV = 3
68 OK = REQ_PROCEED = 0
69 DONE = -2
70 DECLINED = REQ_NOACTION = -1
71