Regular Expressions 101

Group 1((.*)(ASP.NET_SessionId)(=.*))

Group 2(.*)

.*any character (except for line terminators), repeated any number of times

Group 3(ASP.NET_SessionId)

ASPthe literal text ASP (case sensitive)

.any character (except for line terminators)

NET_SessionIdthe literal text NET_SessionId (case sensitive)

Group 4(=.*)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

.*any character (except for line terminators), repeated any number of times

Positive Lookahead(?=SameSite)

SameSitethe literal text SameSite (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

((.*)(ASP.NET_SessionId)(=.*))(?=SameSite)

New

Set-Cookie: ASP.NET_SessionId=k25obpe4pyz44qyvyacsajgv; path=/; HttpOnly; SameSite=Lax; secure