198     failf(conn->data, "Failed sending HTTP2 data");  in send_callback()
232       failf(conn->data, "Received frame on Stream ID: %x not in stream hash!",  in on_frame_recv()
368     failf(conn->data, "Received frame on Stream ID: %x not in stream hash!",  in on_data_chunk_recv()
539     failf(conn->data, "Received frame on Stream ID: %x not in stream hash!",  in on_header()
608       failf(conn->data, "Asked for data to stream %u not in hash!", stream_id);  in data_source_read_callback()
614     failf(conn->data, "nghttp2 confusion");  in data_source_read_callback()
669       failf(conn->data, "Couldn't initialize nghttp2 callbacks!");  in Curl_http2_init()
708       failf(conn->data, "Couldn't initialize nghttp2!");  in Curl_http2_init()
715       failf(conn->data, "Couldn't init stream hash!");  in Curl_http2_init()
754     failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");  in Curl_http2_request_upgrade()
786     failf(data, "HTTP/2 stream %u was not closed cleanly: error_code = %d",  in http2_handle_stream_close()
909         failf(data, "Failed receiving HTTP2 data");  in http2_recv()
915         failf(data, "Unexpected EOF");  in http2_recv()
935       failf(data, "nghttp2_session_mem_recv() returned %d:%s\n",  in http2_recv()
1174     failf(conn->data, "Couldn't add stream to hash!");  in http2_send()
1271       failf(data, "nghttp2_session_upgrade() failed: %s(%d)",  in Curl_http2_switched()
1279       failf(conn->data, "Couldn't add stream to hash!");  in Curl_http2_switched()
1288       failf(data, "nghttp2_submit_settings() failed: %s(%d)",  in Curl_http2_switched()
1299     failf(data, "connection buffer size is too small to store data following "  in Curl_http2_switched()
1316     failf(data, "nghttp2_session_mem_recv() failed: %s(%d)",  in Curl_http2_switched()
1335     failf(data, "nghttp2_session_send() failed: %s(%d)",  in Curl_http2_switched()