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-rw-r--r--lib/http2.c41
-rw-r--r--lib/http2.h2
2 files changed, 39 insertions, 4 deletions
diff --git a/lib/http2.c b/lib/http2.c
index 73470f8e7..f9e873ac6 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -46,6 +46,10 @@
#error too old nghttp2 version, upgrade!
#endif
+#if (NGHTTP2_VERSION_NUM > 0x010800)
+#define NGHTTP2_HAS_HTTP2_STRERROR 1
+#endif
+
#if (NGHTTP2_VERSION_NUM >= 0x010900)
/* nghttp2_session_callbacks_set_error_callback is present in nghttp2 1.9.0 or
later */
@@ -212,6 +216,34 @@ int Curl_http2_ver(char *p, size_t len)
return snprintf(p, len, " nghttp2/%s", h2->version_str);
}
+/* HTTP/2 error code to name based on the Error Code Registry.
+https://tools.ietf.org/html/rfc7540#page-77
+nghttp2_error_code enums are identical.
+*/
+const char *Curl_http2_strerror(uint32_t err) {
+#ifndef NGHTTP2_HAS_HTTP2_STRERROR
+ const char *str[] = {
+ "NO_ERROR", /* 0x0 */
+ "PROTOCOL_ERROR", /* 0x1 */
+ "INTERNAL_ERROR", /* 0x2 */
+ "FLOW_CONTROL_ERROR", /* 0x3 */
+ "SETTINGS_TIMEOUT", /* 0x4 */
+ "STREAM_CLOSED", /* 0x5 */
+ "FRAME_SIZE_ERROR", /* 0x6 */
+ "REFUSED_STREAM", /* 0x7 */
+ "CANCEL", /* 0x8 */
+ "COMPRESSION_ERROR", /* 0x9 */
+ "CONNECT_ERROR", /* 0xA */
+ "ENHANCE_YOUR_CALM", /* 0xB */
+ "INADEQUATE_SECURITY", /* 0xC */
+ "HTTP_1_1_REQUIRED" /* 0xD */
+ };
+ return (err < sizeof str / sizeof str[0]) ? str[err] : "unknown";
+#else
+ return nghttp2_http2_strerror(err);
+#endif
+}
+
/*
* The implementation of nghttp2_send_callback type. Here we write |data| with
* size |length| to the network and return the number of bytes actually
@@ -680,8 +712,8 @@ static int on_stream_close(nghttp2_session *session, int32_t stream_id,
decided to reject stream (e.g., PUSH_PROMISE). */
return 0;
}
- DEBUGF(infof(data_s, "on_stream_close(), error_code = %d, stream %u\n",
- error_code, stream_id));
+ DEBUGF(infof(data_s, "on_stream_close(), %s (err %d), stream %u\n",
+ Curl_http2_strerror(error_code), error_code, stream_id));
stream = data_s->req.protop;
if(!stream)
return NGHTTP2_ERR_CALLBACK_FAILURE;
@@ -1148,8 +1180,9 @@ static ssize_t http2_handle_stream_close(struct connectdata *conn,
function. */
stream->closed = FALSE;
if(stream->error_code != NGHTTP2_NO_ERROR) {
- failf(data, "HTTP/2 stream %u was not closed cleanly: error_code = %d",
- stream->stream_id, stream->error_code);
+ failf(data, "HTTP/2 stream %u was not closed cleanly: %s (err %d)",
+ stream->stream_id, Curl_http2_strerror(stream->error_code),
+ stream->error_code);
*err = CURLE_HTTP2_STREAM;
return -1;
}
diff --git a/lib/http2.h b/lib/http2.h
index 2d073347e..1aec30403 100644
--- a/lib/http2.h
+++ b/lib/http2.h
@@ -37,6 +37,8 @@
*/
int Curl_http2_ver(char *p, size_t len);
+const char *Curl_http2_strerror(uint32_t err);
+
CURLcode Curl_http2_init(struct connectdata *conn);
void Curl_http2_init_state(struct UrlState *state);
void Curl_http2_init_userset(struct UserDefined *set);