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cpp-httplib v0.46.1 Release Notes

Release Date: 2026-06-01 // 10 days ago

  • What's Changed

    🐛 Bug fixes

    • 🛠 Fix Expect: 100-continue over TLS: the client decided whether to withhold the request body based on raw socket readability, but post-handshake TLS 1.3 records (e.g. session tickets) make the socket readable without any HTTP response, causing the body to be withheld and the request to fail with Failed to read connection. The client now decides by attempting to read the status line within the 100-continue timeout, and sends the body if none arrives (matching curl) (#2458, #2460)
    • 🛠 Fix -Wmissing-field-initializers warnings on Windows by using {} instead of {0} for OVERLAPPED and ADDRINFOEXW initialization (#2459)

Previous changes from v0.46.0

  • What's Changed

    🔒 Security

    • 🛠 Fix proxy digest credential leak when an HTTPS origin returns 407 inside a CONNECT tunnel. The 401/407 retry is now gated on the response actually coming from a proxy hop (#2457)

    🆕 New features

    • Add Client::set_no_proxy() for per-host proxy bypass. Accepts *, hostname suffix (dot-boundary rule), IPv4/IPv6 CIDR, and bare IP literals. Proxy-Authorization is suppressed for bypassed hosts, including across redirects (#2446, #2448)