Another option for removing the first string between forward slashes is to use scan (
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when HTTP_REQUEST {
Read in everything after the first / that is not a /.
Save that to $session_id and everything else to $uri_to_save
scan [HTTP::uri] {/%[^/]%s} session_id uri_to_save
Rewrite the URI without the session ID
HTTP::uri $uri_to_save
}
Here is an example:
% set uri /my_session_id_string/path/to/preserve?query=string
/my_session_id_string/path/to/preserve?query=string
% scan $uri {/%[^/]%s} session_id uri_to_save
2
% puts $uri_to_save
/path/to/preserve?query=string
% puts $session_id
my_session_id_string
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