Wapp

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Differences From Artifact [163107b802]:

To Artifact [74cb9527e1]:

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|**wapp-cache-control** _CONTROL_|→|Set caching behavior of current page|
|**wapp-content-security-policy** _POLICY_|→|Set the CSP for the current page|
|**wapp-debug-env**|→|Return a text description of the Wapp environment|
|**wapp** {_TEXT_}|→|Append _TEXT_ without substitution|
|**wapp-unsafe** _TEXT_|→|Append _TEXT_ that contains nothing that needs to be escaped|



3.0 Parameters
--------------

>
|BASE\_URL|→|URL for the Wapp script without a method|
|CONTENT|→|Raw (unparsed) POST content|
|CONTENT\_LENGTH|→|Number of bytes of raw, unparsed POST content|
|CONTENT\_TYPE|→|Mimetype of the POST content|
|DOCUMENT\_ROOT|→|Directory that is the root of the webserver content tree|
|HTTP\_COOKIE|→|Raw, unparsed cookies|
|HTTP\_HOST|→|Hostname to which this request was sent|
|HTTP\_USER\_AGENT|→|Name of client program that sent current request|
|HTTPS|→|Exists and has value "on" if the request is encrypted|
|PATH\_HEAD|→|First element of PATH\_INFO. Determines request handler|
|PATH\_INFO|→|URL path beyond the application script name|
|PATH\_TAIL|→|Part of PATH\_INFO beyond PATH\_HEAD|
|REMOTE\_ADDR|→|IP address of the client|
|REMOTE\_PORT|→|TCP port of the client|
|REQUEST\_METHOD|→|"GET" or "POST" or "HEAD"|
|SAME\_ORIGIN|→|True if this request is from the same origin|
|SCRIPT\_FILENAME|→|Full pathname of the Wapp application script|
|SCRIPT\_NAME|→|Prefix of PATH\_INFO that identifies the application script|
|SELF\_URL|→|URL of this request without PATH\_TAIL|
|WAPP\_MODE|→|One of "cgi", "scgi", "server", or "local"|

4.0 URL Parsing
---------------

Assuming "env.tcl" is the name of the Wapp application script:

>
    https://wapp.tcl.tk/demo/env.tcl/abc/def/ghi?a=5&b=22.425#point42
            \_________/ \__________/\__________/
                 |           |          |
             HTTP_HOST  SCRIPT_NAME  PATH_INFO

>
    SCRIPT_FILENAME := DOCUMENT_ROOT + SCRIPT_NAME

>
    https://wapp.tcl.tk/demo/env.tcl/abc/def/ghi?a=5&b=22.425#point42
    \______________________________/ \_/ \_____/
                   |                  |     |
                BASE_URL         PATH_HEAD  '-- PATH_TAIL     

>

    https://wapp.tcl.tk/demo/env.tcl/abc/def/ghi?a=5&b=22.425#point42
    \__________________________________/         \__________/
                   |                                  |
                SELF_URL                         QUERY_STRING











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|**wapp-cache-control** _CONTROL_|&rarr;|Set caching behavior of current page|
|**wapp-content-security-policy** _POLICY_|&rarr;|Set the CSP for the current page|
|**wapp-debug-env**|&rarr;|Return a text description of the Wapp environment|
|**wapp** {_TEXT_}|&rarr;|Append _TEXT_ without substitution|
|**wapp-unsafe** _TEXT_|&rarr;|Append _TEXT_ that contains nothing that needs to be escaped|


<a name="cgiparams"></a>
3.0 CGI Parameters
------------------

>
|BASE\_URL|&rarr;|URL for the Wapp script without a method|
|CONTENT|&rarr;|Raw (unparsed) POST content|
|CONTENT\_LENGTH|&rarr;|Number of bytes of raw, unparsed POST content|
|CONTENT\_TYPE|&rarr;|Mimetype of the POST content|
|DOCUMENT\_ROOT|&rarr;|Directory that is the root of the webserver content tree|
|HTTP\_COOKIE|&rarr;|Raw, unparsed cookies|
|HTTP\_HOST|&rarr;|Hostname to which this request was sent|
|HTTP\_USER\_AGENT|&rarr;|Name of client program that sent current request|
|HTTPS|&rarr;|Exists and has value "on" if the request is TLS encrypted|
|PATH\_HEAD|&rarr;|First element of PATH\_INFO. Determines request handler|
|PATH\_INFO|&rarr;|URL path beyond the application script name|
|PATH\_TAIL|&rarr;|Part of PATH\_INFO beyond PATH\_HEAD|
|REMOTE\_ADDR|&rarr;|IP address of the client|
|REMOTE\_PORT|&rarr;|TCP port of the client|
|REQUEST\_METHOD|&rarr;|"GET" or "POST" or "HEAD"|
|SAME\_ORIGIN|&rarr;|True if this request is from the same origin|
|SCRIPT\_FILENAME|&rarr;|Full pathname of the Wapp application script|
|SCRIPT\_NAME|&rarr;|Prefix of PATH\_INFO that identifies the application script|
|SELF\_URL|&rarr;|URL of this request without PATH\_TAIL|
|WAPP\_MODE|&rarr;|One of "cgi", "scgi", "server", or "local"|

4.0 URL Parsing
---------------

Assuming "env.tcl" is the name of the Wapp application script:

>
    https://wapp.tcl.tk/demo/env.tcl/abc/def/ghi?a=5&b=22.425#point42
            \_________/\___________/\__________/
                 |           |          |
             HTTP_HOST  SCRIPT_NAME  PATH_INFO




>
    https://wapp.tcl.tk/demo/env.tcl/abc/def/ghi?a=5&b=22.425#point42
    \______________________________/ \_/ \_____/
                   |                  |     |
                BASE_URL         PATH_HEAD  |-- PATH_TAIL
                                      |   __|__

                                     / \ /     \
    https://wapp.tcl.tk/demo/env.tcl/abc/def/ghi?a=5&b=22.425#point42
    \__________________________________/         \__________/
                   |                                  |
                SELF_URL                         QUERY_STRING

>
    SCRIPT_FILENAME := DOCUMENT_ROOT + SCRIPT_NAME