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Tom Bergan authored
Currently, if a client of crypto/tls (e.g., net/http, http2) calls tls.Conn.Write with a 33KB buffer, that ends up writing three TLS records: 16KB, 16KB, and 1KB. Slow clients (such as 2G phones) must download the first 16KB record before they can decrypt the first byte. To improve latency, it's better to send smaller TLS records. However, sending smaller records adds overhead (more overhead bytes and more crypto calls), which slightly hurts throughput. A simple heuristic, implemented in this change, is to send small records for new connections, then boost to large records after the first 1MB has been written on the connection. Fixes #14376 Change-Id: Ice0f6279325be6775aa55351809f88e07dd700cd Reviewed-on: https://go-review.googlesource.com/19591 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Tom Bergan <tombergan@google.com> Reviewed-by:
Adam Langley <agl@golang.org>
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