From: Jay Satiro <raysatiro@yahoo.com>
Date: Mon, 28 Nov 2016 19:08:35 +0000 (-0500)
Subject: http2: check nghttp2_session_set_local_window_size exists
X-Git-Tag: curl-7_52_0~58
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=19613fb3;p=thirdparty%2Fcurl.git

http2: check nghttp2_session_set_local_window_size exists

The function only exists since nghttp2 1.12.0.

Bug: https://github.com/curl/curl/commit/a4d8888#commitcomment-19985676
Reported-by: Michael Kaufmann
---

diff --git a/lib/http2.c b/lib/http2.c
index 16684da9d1..4cc17ba2b2 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -59,6 +59,10 @@
 #define nghttp2_session_callbacks_set_error_callback(x,y)
 #endif
 
+#if (NGHTTP2_VERSION_NUM >= 0x010c00)
+#define NGHTTP2_HAS_SET_LOCAL_WINDOW_SIZE 1
+#endif
+
 #define HTTP2_HUGE_WINDOW_SIZE (1 << 30)
 
 /*
@@ -2044,6 +2048,7 @@ CURLcode Curl_http2_switched(struct connectdata *conn,
     }
   }
 
+#ifdef NGHTTP2_HAS_SET_LOCAL_WINDOW_SIZE
   rv = nghttp2_session_set_local_window_size(httpc->h2, NGHTTP2_FLAG_NONE, 0,
                                              HTTP2_HUGE_WINDOW_SIZE);
   if(rv != 0) {
@@ -2051,6 +2056,7 @@ CURLcode Curl_http2_switched(struct connectdata *conn,
           nghttp2_strerror(rv), rv);
     return CURLE_HTTP2;
   }
+#endif
 
   /* we are going to copy mem to httpc->inbuf.  This is required since
      mem is part of buffer pointed by stream->mem, and callbacks