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}
#endif
#define MAX_SESSION_ID_ATTEMPTS 10
static int generate_session_id(const SSL *ssl, unsigned char *id,
unsigned int *id_len)
{
unsigned int count = 0;
do {
RAND_pseudo_bytes(id, *id_len);
/* Prefix the session_id with the required prefix. NB: If our
* prefix is too long, clip it - but there will be worse effects
* anyway, eg. the server could only possibly create 1 session
* ID (ie. the prefix!) so all future session negotiations will
* fail due to conflicts. */
memcpy(id, session_id_prefix,
(strlen(session_id_prefix) < *id_len) ?
strlen(session_id_prefix) : *id_len);
}
while(SSL_has_matching_session_id(ssl, id, *id_len) &&
(++count < MAX_SESSION_ID_ATTEMPTS));
if(count >= MAX_SESSION_ID_ATTEMPTS)
return 0;
return 1;
}