Client callback that selects a PSK identity and pre-shared key for TLSv1.2 and below.
Declared in <openssl/ssl.h>
typedef unsigned int(* SSL_psk_client_cb_func)(SSL*, char const*, char*, unsigned int, unsigned char*, unsigned int);Length of the written PSK on success (> 0), or 0 to abort the handshake.
| Name | Description |
|---|---|
| ssl | SSL connection establishing the PSK. |
| hint | NUL-terminated PSK identity hint from the server, or NULL. |
| identity | Buffer that receives the NUL-terminated chosen identity. |
| max_identity_len | Size of identity including the NUL terminator. |
| psk | Buffer that receives the pre-shared key bytes. |
| max_psk_len | Capacity of psk in bytes. |