CODEWITHSUNDEEP
regexnginx
Mike
Mike

Reputation: 159

nginx how to do if not regex

I have as below in nginx but it doesn't do what I intend:

location / {
  if ($host !~* blah.blah.com) {
    return 307 https://$host/$request?uri;
  }
}

I basically need to do a 307 when $host doesn't match blah.blah.com in regex or it could really just be a plain string. I tried putting them in double quotes or /.../ but nothing seems to work. How do I specify this in nginx's location block?

Upvotes: 7

Views: 10935

Answers (1)

Richard Smith
Richard Smith

Reputation: 49692

As you say, you do not need to use a regular expression to match a single string. You can use the = and != operators with the if directive. See this document for details.

For example:

if ($host != foo.example.com) { ... }

The correct regular expression for the above requires two anchors (^ and $) and an escape for the . which would otherwise represent any character.

For example:

if ($host !~* ^foo\.example\.com$) { ... }

The use of quotes is optional, unless the string contains reserved characters (such as { and }).

See this link for more on regular expressions.

Upvotes: 11

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