MEDIUM: h2: unblock a connection when its current stream detaches
If a stream is killed for whatever reason and it happens to be the one
currently blocking the connection, we must unblock the connection and
enable polling again so that it can attempt to make progress. This may
happen for example on upload timeout, where the demux is blocked due to
a full stream buffer, and the stream dies on server timeout and quits.
diff --git a/src/mux_h2.c b/src/mux_h2.c
index 3b26a01..b793c52 100644
--- a/src/mux_h2.c
+++ b/src/mux_h2.c
@@ -1628,6 +1628,17 @@
h2c = h2s->h2c;
h2s->cs = NULL;
+ if ((h2c->flags & H2_CF_DEM_BLOCK_ANY && h2s->id == h2c->dsi) ||
+ (h2c->flags & H2_CF_MUX_BLOCK_ANY && h2s->id == h2c->msi)) {
+ /* unblock the connection if it was blocked on this
+ * stream.
+ */
+ h2c->flags &= ~H2_CF_DEM_BLOCK_ANY;
+ h2c->flags &= ~H2_CF_MUX_BLOCK_ANY;
+ conn_xprt_want_recv(cs->conn);
+ conn_xprt_want_send(cs->conn);
+ }
+
if (h2s->by_id.node.leaf_p) {
/* h2s still attached to the h2c */
eb32_delete(&h2s->by_id);