#define http_message_header(m, h) _http_message_header_ex((m), (h), sizeof(h))
#define http_message_header_ex _http_message_header_ex
static inline zval *_http_message_header_ex(http_message *msg, char *key_str, size_t key_len)
#define http_message_header(m, h) _http_message_header_ex((m), (h), sizeof(h))
#define http_message_header_ex _http_message_header_ex
static inline zval *_http_message_header_ex(http_message *msg, char *key_str, size_t key_len)