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   serf 1.3.9 (asynchronous HTTP client library)

   The serf library is a high performance C-based HTTP client library
   built upon the Apache Portable Runtime (APR) library. Key features:
    * multiplexed, asynchronous connections,
    * SSL/TLS support, full HTTP pipelining,
    * multiple authentication modes (Basic, Digest, Kerberos/NTLM),
    * zero-copy support for increased throughput.

   Homepage: https://serf.apache.org

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