gnu.libmicrohttpd/src/include/r_options.rec

# *-* mode: rec -*-
#
# response option registry
#
%rec: R_Options
# recutils supports only signed 32 bit values
%typedef: enum_value range 1 0x7FFFFFFF
%key: Name
%singular: Value
%type: Value enum_value
%auto: Value
%mandatory: Value
%mandatory: Comment
%allowed: Type Argument1 Description1 Member1 Argument2 Description2 Member2 Argument3 Description3 Member3
%type: Name,Type,Argument1,Member1,Argument2,Member2,Argument3,Member3 line
%unique: Type Value Argument1 Description1 Member1 Argument2 Description2 Member2 Argument3 Description3 Member3

# General properties

Name: REUSABLE
Value: 20
Type: enum MHD_Bool
Comment: Make the response object re-usable. (FIXME: not used in struct ResponseOptions; remove!?)
+ The response will not be consumed by MHD_action_from_response() and must be destroyed by MHD_response_destroy().
+ Useful if the same response is often used to reply.

# Content control

Name: HEAD_ONLY_RESPONSE
Value: 40
Type: enum MHD_Bool
Comment: Enable special processing of the response as body-less (with undefined body size). No automatic 'Content-Length' or 'Transfer-Encoding: chunked' headers are added when the response is used with #MHD_HTTP_STATUS_NOT_MODIFIED code or to respond to HEAD request.
+ The flag also allow to set arbitrary 'Content-Length' by #MHD_response_add_header() function.
+ This flag value can be used only with responses created without body (zero-size body).
+ Responses with this flag enabled cannot be used in situations where reply body must be sent to the client.
+ This flag is primarily intended to be used when automatic 'Content-Length' header is undesirable in response to HEAD requests.

Name: CHUNKED_ENC
Value: 41
Type: enum MHD_Bool
Comment: Force use of chunked encoding even if the response content size is known.
+ Ignored when the reply cannot have body/content.

# Connection control

Name: CONN_CLOSE
Value: 60
Type: enum MHD_Bool
Comment: Force close connection after sending the response, prevents keep-alive connections and adds 'Connection: close' header.

# Compatibility settings

Name: HTTP_1_0_COMPATIBLE_STRICT
Value: 80
Type: enum MHD_Bool
Comment: Only respond in conservative (dumb) HTTP/1.0-compatible mode.
+ Response still use HTTP/1.1 version in header, but always close the connection after sending the response and do not use chunked encoding for the response.
+ You can also set the #MHD_R_O_HTTP_1_0_SERVER flag to force HTTP/1.0 version in the response.
+ Responses are still compatible with HTTP/1.1.
+ Summary:
+ + declared reply version: HTTP/1.1
+ + keep-alive: no
+ + chunked: no
+
+ This option can be used to communicate with some broken client, which does not implement HTTP/1.1 features, but advertises HTTP/1.1 support.

Name: HTTP_1_0_SERVER
Value: 81
Type: enum MHD_Bool
Comment: Only respond in HTTP/1.0-mode.
+ Contrary to the #MHD_R_O_HTTP_1_0_COMPATIBLE_STRICT flag, the response's HTTP version will always be set to 1.0 and keep-alive connections will be used if explicitly requested by the client.
+ The 'Connection:' header will be added for both 'close' and 'keep-alive' connections.
+ Chunked encoding will not be used for the response.
+ Due to backward compatibility, responses still can be used with HTTP/1.1 clients.
+ This option can be used to emulate HTTP/1.0 server (for response part only as chunked encoding in requests (if any) is processed by MHD).
+ Summary:
+ + declared reply version: HTTP/1.0
+ + keep-alive: possible
+ + chunked: no
+
+ With this option HTTP/1.0 server is emulated (with support for 'keep-alive' connections).

# Violate HTTP and/or RFCs

Name: INSANITY_HEADER_CONTENT_LENGTH
Value: 100
Type: enum MHD_Bool
Comment: Disable sanity check preventing clients from manually setting the HTTP content length option.
+ Allow to set several 'Content-Length' headers. These headers will be used even with replies without body.

# Callbacks

Name: termination_callback
Value: 121
Type: struct MHD_ResponeOptionValueTermCB
Comment: Set a function to be called once MHD is finished with the request.
Argument1: MHD_RequestTerminationCallback term_cb
Description1: the function to call,
+ NULL to not use the callback
Argument2: void *term_cb_cls
Description2: the closure for the callback