Module flow 

Flow control — RFC 9113 §5.2 + §6.9.

Spec §5.2: there is a flow window per stream AND per connection. A sender may not send more than min(stream_window, conn_window) of DATA bytes before receiving a WINDOW_UPDATE.

Structs

FlowControl

Flow-control window with signed i64 (Spec §6.9: can transiently become negative when settings shrink the window).

Constants

INITIAL_WINDOW_SIZE

Initial window size per Spec §6.5.2 (SETTINGS_INITIAL_WINDOW_SIZE).

Functions

decode_window_update

Decodes a WINDOW_UPDATE frame payload (4 bytes).

encode_window_update

Encodes a WINDOW_UPDATE frame payload (4 bytes, R bit + 31-bit increment). Spec §6.9.