Get the remote key
#include <libssh2.h>
const char *libssh2_session_hostkey(LIBSSH2_SESSION *session,
size_t *len, int *type);
Returns a pointer to the current host key, the value len points to will get the length of the key.
The value type points to the type of hostkey which is one of: LIBSSH2_HOSTKEY_TYPE_RSA, LIBSSH2_HOSTKEY_TYPE_DSS, or LIBSSH2_HOSTKEY_TYPE_UNKNOWN.
A pointer, or NULL if something went wrong.