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