tree afdffea1f92db6bf81cab098ad65fbde4a508b83
parent a406a2a03b94c3fcefcb61f3d606353486ed76a4
author haoyuewang <haoyuewang@google.com> 1650497163 -0700
committer Copybara-Service <copybara-worker@google.com> 1650497214 -0700

Send bandwidth estimate when the server network idles for half of idle_network_timeout for IETF QUIC guarded by connection option BWID.

Guarded with the same flag and connection option:
1. No longer sending bandwidth estimates when only bandwidth resumption is enabled.
2. When sending the bandwidth after idle long enough, the bandwidth from SendAlgorithm is used.
3. When the NEW_TOKEN frame is sent after the handshake, bandwidth from the previous session is sent along if there is no better measurement.

Protected by FLAGS_quic_reloadable_flag_quic_enable_sending_bandwidth_estimate_when_network_idle.

PiperOrigin-RevId: 443223110