add probe to see what has actually been sent

h2o · Jan 29, 2025 · ebcfde2 · ebcfde2
1 parent 91542af
commit ebcfde2
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Showing 2 changed files with 10 additions and 0 deletions.
diff --git a/lib/quicly.c b/lib/quicly.c
@@ -4348,6 +4348,14 @@ quicly_error_t quicly_send_stream(quicly_stream_t *stream, quicly_send_context_t
         is_fin = 0;
     }
 
+    QUICLY_PROBE(STREAM_AFTER_SEND_EMIT, stream->conn, stream->conn->stash.now, stream, *s->dst, off, dst, len);
+    QUICLY_LOG_CONN(stream_after_send_emit, stream->conn, {
+        PTLS_LOG_ELEMENT_SIGNED(stream_id, stream->stream_id);
+        PTLS_LOG_ELEMENT_UNSIGNED(frame_type, *s->dst);
+        PTLS_LOG_ELEMENT_UNSIGNED(frame_offset, off);
+        PTLS_LOG_APPDATA_ELEMENT_HEXDUMP(data, dst - len, len);
+    });
+
     /* update s->dst now that frame construction is complete */
     s->dst = dst;
 

diff --git a/quicly-probes.d b/quicly-probes.d
@@ -157,6 +157,8 @@ provider quicly {
     probe stream_on_send_shift(struct st_quicly_conn_t *conn, int64_t at, struct st_quicly_stream_t *stream, size_t delta);
     probe stream_on_send_emit(struct st_quicly_conn_t *conn, int64_t at, struct st_quicly_stream_t *stream, size_t off,
                               size_t capacity);
+    probe stream_after_send_emit(struct st_quicly_conn_t *conn, int64_t at, struct st_quicly_stream_t *stream, uint8_t frame_type,
+                                 uint64_t frame_offset, const void *data, size_t data_len);
     probe stream_on_send_stop(struct st_quicly_conn_t *conn, int64_t at, struct st_quicly_stream_t *stream, int64_t err);
     probe stream_on_receive(struct st_quicly_conn_t *conn, int64_t at, struct st_quicly_stream_t *stream, size_t off,
                             const void *src, size_t src_len);