Regular Expressions 101

Explanation

Pro

Group src_ip(?<src_ip>\d+\.\d+\.\d+\.\d+)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\s+any whitespace character, repeated at least once

Group dest_ip(?<dest_ip>\d+\.\d+\.\d+\.\d+)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\s+any whitespace character, repeated at least once

Group src_port(?<src_port>\d+)

\d+a digit, repeated at least once

\s+any whitespace character, repeated at least once

Group dest_port(?<dest_port>\d+)

\d+a digit, repeated at least once

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

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25 tokens

(?<src_ip>\d+\.\d+\.\d+\.\d+)\s+(?<dest_ip>\d+\.\d+\.\d+\.\d+)\s+(?<src_port>\d+)\s+(?<dest_port>\d+)

There are no unit tests.