# HG changeset patch
# User Valentin Bartenev <vbart@nginx.com>
# Date 1395841419 -14400
# Node ID 372cc6e532a6d70f66be64e31f8a73d19ca1889c
# Parent  bd91f286ee0ade98e9c0f8f55bfef54a122adaf2
SPDY: detect premature end of frame while start parsing headers.

diff --git a/src/http/ngx_http_spdy.c b/src/http/ngx_http_spdy.c
--- a/src/http/ngx_http_spdy.c
+++ b/src/http/ngx_http_spdy.c
@@ -1049,6 +1049,15 @@ ngx_http_spdy_state_headers(ngx_http_spd
     if (r->headers_in.headers.part.elts == NULL) {
 
         if (buf->last - buf->pos < NGX_SPDY_NV_NUM_SIZE) {
+
+            if (complete) {
+                ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                              "client sent SYN_STREAM frame "
+                              "with invalid HEADERS block");
+                ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+                return ngx_http_spdy_state_protocol_error(sc);
+            }
+
             return ngx_http_spdy_state_save(sc, pos, end,
                                             ngx_http_spdy_state_headers);
         }