YAZ_EXPORT void z_HTTP_header_add_content_type(ODR o, Z_HTTP_Header **hp,
const char *content_type,
const char *charset);
YAZ_EXPORT void z_HTTP_header_add_basic_auth(ODR o, Z_HTTP_Header **hp,
const char *username,
const char *password);
YAZ_EXPORT void z_HTTP_header_add_content_type(ODR o, Z_HTTP_Header **hp,
const char *content_type,
const char *charset);
YAZ_EXPORT void z_HTTP_header_add_basic_auth(ODR o, Z_HTTP_Header **hp,
const char *username,
const char *password);