QUIC: stream flow control refactored.

- Function ngx_quic_control_flow() is introduced.  This functions does
both MAX_DATA and MAX_STREAM_DATA flow controls.  The function is called
from STREAM and RESET_STREAM frame handlers.  Previously, flow control
was only accounted for STREAM.  Also, MAX_DATA flow control was not accounted
at all.

- Function ngx_quic_update_flow() is introduced.  This function advances flow
control windows and sends MAX_DATA/MAX_STREAM_DATA.  The function is called
from RESET_STREAM frame handler, stream cleanup handler and stream recv()
handler.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/event/quic/ngx_event_quic_connection.h b/src/event/quic/ngx_event_quic_connection.h
index 784378647..ef8c1dacc 100644
--- a/src/event/quic/ngx_event_quic_connection.h
+++ b/src/event/quic/ngx_event_quic_connection.h
@@ -115,8 +115,10 @@ typedef struct {
     ngx_rbtree_t                      tree;
     ngx_rbtree_node_t                 sentinel;
 
-    uint64_t                          received;
     uint64_t                          sent;
+    uint64_t                          recv_offset;
+    uint64_t                          recv_window;
+    uint64_t                          recv_last;
     uint64_t                          recv_max_data;
     uint64_t                          send_max_data;