by default, the http server's response to a client's request is having 200 ok status. falcon provides its own list of status constant for more convenience and readability.

for example, 200 ok status code is represented by,

resp.status = falcon.http_ok

these predefined falcon constants avoid typos and cuts down on the number of string objects that must be created when preparing responses. however, starting with falcon version 3.0, using bare int codes is allowed as well.

resp.status = 200

for asgi application, same status codes are applicable.

some of the status codes defined in falcon library are listed below −

informational codes

http_continue = http_100
http_switching_protocols = http_101
http_processing = http_102

success status codes

http_ok = http_200
http_created = http_201
http_accepted = http_202
http_non_authoritative_information = http_203
http_no_content = http_204
http_reset_content = http_205
http_partial_content = http_206
http_multi_status = http_207
http_already_reported = http_208
http_im_used = http_226

redirection error codes

http_multiple_choices = http_300
http_moved_permanently = http_301
http_found = http_302
http_see_other = http_303
http_not_modified = http_304
http_use_proxy = http_305
http_temporary_redirect = http_307
http_permanent_redirect = http_308

client error codes

http_bad_request = http_400
http_unauthorized = http_401 # "unauthenticated"
http_payment_required = http_402
http_forbidden = http_403 # "unauthorized"
http_not_found = http_404
http_method_not_allowed = http_405
http_not_acceptable = http_406
http_proxy_authentication_required = http_407
http_request_timeout = http_408
http_conflict = http_409

server error codes

http_internal_server_error = http_500
http_not_implemented = http_501
http_bad_gateway = http_502
http_service_unavailable = http_503
http_gateway_timeout = http_504
http_http_version_not_supported = http_505
http_insufficient_storage = http_507
http_loop_detected = http_508
http_network_authentication_required = http_511

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