quic: write desired size needs update on maxstream

martenrichter · martenrichter · commit 83e4cb2057e2 · 2026-07-26T22:23:42.000+02:00
Without this update the streams can stall, if the
chunks are close or bigger than the window size.

Signed-off-by: Marten Richter &lt;marten.richter@freenet.de&gt;
diff --git a/src/quic/http3.cc b/src/quic/http3.cc
@@ -375,6 +375,7 @@ class Http3ApplicationImpl final : public Session::Application {
     Debug(&session(),
           "HTTP/3 application extending max stream data to %" PRIu64,
           max_data);
+    stream->UpdateWriteDesiredSize(); // the stream might be blocked on js side
     nghttp3_conn_unblock_stream(*this, stream->id());
   }
 

Original file line number	Diff line number	Diff line change
`@@ -375,6 +375,7 @@ class Http3ApplicationImpl final : public Session::Application {`
`375`	`375`	`Debug(&session(),`
`376`	`376`	`"HTTP/3 application extending max stream data to %" PRIu64,`
`377`	`377`	`max_data);`
	`378`	`+ stream->UpdateWriteDesiredSize(); // the stream might be blocked on js side`
`378`	`379`	`nghttp3_conn_unblock_stream(*this, stream->id());`
`379`	`380`	`}`
`380`	`381`