#define NGHTTP2_ERROR_CODES(V) \

V(NGHTTP2_ERR_INVALID_ARGUMENT) \

V(NGHTTP2_ERR_BUFFER_ERROR) \

V(NGHTTP2_ERR_UNSUPPORTED_VERSION) \

V(NGHTTP2_ERR_WOULDBLOCK) \

V(NGHTTP2_ERR_PROTO) \

V(NGHTTP2_ERR_INVALID_FRAME) \

V(NGHTTP2_ERR_EOF) \

V(NGHTTP2_ERR_DEFERRED) \

V(NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE) \

V(NGHTTP2_ERR_STREAM_CLOSED) \

V(NGHTTP2_ERR_STREAM_CLOSING) \

V(NGHTTP2_ERR_STREAM_SHUT_WR) \

V(NGHTTP2_ERR_INVALID_STREAM_ID) \

V(NGHTTP2_ERR_INVALID_STREAM_STATE) \

V(NGHTTP2_ERR_DEFERRED_DATA_EXIST) \

V(NGHTTP2_ERR_START_STREAM_NOT_ALLOWED) \

V(NGHTTP2_ERR_GOAWAY_ALREADY_SENT) \

V(NGHTTP2_ERR_INVALID_HEADER_BLOCK) \

V(NGHTTP2_ERR_INVALID_STATE) \

V(NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) \

V(NGHTTP2_ERR_FRAME_SIZE_ERROR) \

V(NGHTTP2_ERR_HEADER_COMP) \

V(NGHTTP2_ERR_FLOW_CONTROL) \

V(NGHTTP2_ERR_INSUFF_BUFSIZE) \

V(NGHTTP2_ERR_PAUSE) \

V(NGHTTP2_ERR_TOO_MANY_INFLIGHT_SETTINGS) \

V(NGHTTP2_ERR_PUSH_DISABLED) \

V(NGHTTP2_ERR_DATA_EXIST) \

V(NGHTTP2_ERR_SESSION_CLOSING) \

V(NGHTTP2_ERR_HTTP_HEADER) \

V(NGHTTP2_ERR_HTTP_MESSAGING) \

V(NGHTTP2_ERR_REFUSED_STREAM) \

V(NGHTTP2_ERR_INTERNAL) \

V(NGHTTP2_ERR_CANCEL) \

V(NGHTTP2_ERR_FATAL) \

V(NGHTTP2_ERR_NOMEM) \

V(NGHTTP2_ERR_CALLBACK_FAILURE) \

V(NGHTTP2_ERR_BAD_CLIENT_MAGIC) \

V(NGHTTP2_ERR_FLOODED)

const char* nghttp2_errname(int rv) {

switch (rv) {

#define V(code) case code: return #code;

NGHTTP2_ERROR_CODES(V)

#undef V

default:

return "NGHTTP2_UNKNOWN_ERROR";

}

}