$ipaddr (parse-spec) function
The IPv4 portion of the word given by parse-spec is returned. This function returns the text delimited by the first punctuation or space following the address, if any. If the parse-spec value does not return an IP address, the match specification is not matched. This function is especially useful in a nested specification. (See further section.)
Target string | Parse expression | Return value |
|---|---|---|
src: 192.168.1.1 dest: 10.1.1.2 | $ipaddr ($2) | 192.168.1.1 |
address tgt: 1.2.1.1:88 logged | $ipaddr (tgt: *) | 1.2.1.1 |
drop=66.2.3.45 | $ipaddr (drop=*) | 66.2.3.45 |
POST https://1.2.3.4:88 | $ipaddr( post *) | No match. The matched text is not an IPv4 address. |
Test 123 | $ipaddr ($2) | No match. The second word of the target string is not an IPv4 address. |
Test string AAA | $ipaddr ($4) | No match. There is no fourth word in the string. |
Test 192.1.1.1 value | $ipaddr (xxx: *) | No match. There is no match for XXX: * in the target string. |
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