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http2: Add Curl_http2_strerror for HTTP/2 error codes

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Ref: https://github.com/curl/curl/issues/659
Ref: https://github.com/curl/curl/pull/663
This commit is contained in:
Jay Satiro 2016-03-03 00:47:46 -05:00
parent a89a211ed8
commit b71bc694c8
2 changed files with 39 additions and 4 deletions
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41
lib/http2.c
View File

@ -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;
}

2
lib/http2.h
View File

@ -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);