From 33dac9dfac691afd027b2869cd9c9503276b7cc3 Mon Sep 17 00:00:00 2001
From: Stefan Eissing <stefan@eissing.org>
Date: Thu, 7 Sep 2023 14:51:44 +0200
Subject: [PATCH] ngtcp2: fix handling of large requests

- requests >64K are send in parts to the filter
- fix parsing of the request to assemble it correctly
  from several sends
- open a QUIC stream only when the complete request has
  been collected

Closes #11815
---
 lib/vquic/curl_ngtcp2.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/vquic/curl_ngtcp2.c b/lib/vquic/curl_ngtcp2.c
index ffdbb575c1..ddd0992a64 100644
--- a/lib/vquic/curl_ngtcp2.c
+++ b/lib/vquic/curl_ngtcp2.c
@@ -1655,13 +1655,6 @@ static ssize_t h3_stream_open(struct Curl_cfilter *cf,
   stream = H3_STREAM_CTX(data);
   DEBUGASSERT(stream);
 
-  rc = ngtcp2_conn_open_bidi_stream(ctx->qconn, &stream->id, NULL);
-  if(rc) {
-    failf(data, "can get bidi streams");
-    *err = CURLE_SEND_ERROR;
-    goto out;
-  }
-
   nwritten = Curl_h1_req_parse_read(&stream->h1, buf, len, NULL, 0, err);
   if(nwritten < 0)
     goto out;
@@ -1696,6 +1689,13 @@ static ssize_t h3_stream_open(struct Curl_cfilter *cf,
     nva[i].flags = NGHTTP3_NV_FLAG_NONE;
   }
 
+  rc = ngtcp2_conn_open_bidi_stream(ctx->qconn, &stream->id, NULL);
+  if(rc) {
+    failf(data, "can get bidi streams");
+    *err = CURLE_SEND_ERROR;
+    goto out;
+  }
+
   switch(data->state.httpreq) {
   case HTTPREQ_POST:
   case HTTPREQ_POST_FORM: