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b2e31d33f5
When an error is detected at quic-conn layer, the upper MUX must be notified. Previously, this was done relying on quic_conn flag QUIC_FL_CONN_NOTIFY_CLOSE set and the MUX wake callback called on connection closure. Adjust this mechanism to use an approach more similar to other transport layers in haproxy. On error, connection flags are updated with CO_FL_ERROR, CO_FL_SOCK_RD_SH and CO_FL_SOCK_WR_SH. The MUX is then notified when the error happened instead of just before the closing. To reflect this change, qc_notify_close() has been renamed qc_notify_err(). This function must now be explicitely called every time a new error condition arises on the quic_conn layer. To ensure MUX send is disabled on error, qc_send_mux() now checks CO_FL_SOCK_WR_SH. If set, the function returns an error. This should prevent the MUX from sending data on closing or draining state. To complete this patch, MUX layer must now check for CO_FL_ERROR explicitely. This will be the subject of the following commit. This should be backported up to 2.7.