nng_http_res_alloc_error − allocate HTTP error response
#include
<nng/nng.h>
#include <nng/supplemental/http/http.h>
int nng_http_res_alloc_error(nng_http_res **resp, uint16_t status);
The nng_http_res_alloc_error() function allocates a new HTTP response structure and stores a pointer to it in resp. The response will be initialized with the status code status, a corresponding reason phrase, and a simple HTML page containing the same information will be generated and attached to the response. (Relevant HTTP headers will be set as well, such as Content−Type and Content−Length.) The HTTP protocol version is also set to "HTTP/1.1".
Tip
This is the simplest way to generate an error response.
This function returns 0 on success, and non−zero otherwise.
NNG_ENOMEM
Insufficient free memory exists to allocate a message.
NNG_ENOTSUP
HTTP support not configured.
nng_http_res_alloc(3http), nng_http_res_free(3http), nng_http_res_set_reason(3http), nng_http_res_set_status(3http), nng_strerror(3), nng(7)