This documentation is for version v1.3.0 of NNG, but the latest released version is v1.8.0. see the documentation for v1.8.0 for the most up-to-date information.


#include <nng/nng.h>
#include <nng/supplemental/http/http.h>

int nng_http_res_set_header(nng_http_res *res, const char *key,
const char *val);


The nng_http_res_set_header() sets the HTTP header for the response res and the key to the val. The key and val are copied. Any previous header with the same key is replaced.

See nng_http_res_add_header() to add additional headers with the same key without replacing them.

The value of key is case insensitive, and should not include the final colon in an HTTP header. For example, specifying Host or hOSt are equivalent, whereas the value Host: is not a legal header key.


This function returns 0 on success, and non-zero otherwise.



Insufficient memory to perform the operation.


No support for HTTP in the library.