/* Default (unencrypted) send.
* For blocking sockets, always returns len or SECFailure, no short writes.
* For non-blocking sockets:
* Returns positive count if any data was written, else returns SECFailure.
* Short writes may occur. Does not return SECWouldBlock.
*/
int ssl_DefSend(sslSocket *ss, const unsigned char *buf, int len, int flags)
{
PRFileDesc *lower = ss->fd->lower;
int sent = 0;
#if NSS_DISABLE_NAGLE_DELAYS
/* Although this is overkill, we disable Nagle delays completely for
** SSL sockets.
*/
if (ss->opt.useSecurity && !ss->delayDisabled) {
ssl_EnableNagleDelay(ss, PR_FALSE); /* ignore error */
ss->delayDisabled = 1;
}
#endif
do {
int rv = lower->methods->send(lower, (const void *)(buf + sent),
len - sent, flags, ss->wTimeout);
if (rv < 0) {
PRErrorCode err = PR_GetError();
if (err == PR_WOULD_BLOCK_ERROR) {
ss->lastWriteBlocked = 1;
return sent ? sent : SECFailure;
}
ss->lastWriteBlocked = 0;
MAP_ERROR(PR_CONNECT_ABORTED_ERROR, PR_CONNECT_RESET_ERROR)
/* Loser */
return rv;
}
sent += rv;
if (IS_DTLS(ss) && (len > sent)) {
/* We got a partial write so just return it */
return sent;
}
} while (len > sent);
int
ssl_SecureClose(sslSocket *ss)
{
int rv;
if (!(ss->shutdownHow & ssl_SHUTDOWN_SEND) &&
ss->firstHsDone &&
!ss->recvdCloseNotify &&
ss->ssl3.initialized) {
/* We don't want the final alert to be Nagle delayed. */
if (!ss->delayDisabled) {
ssl_EnableNagleDelay(ss, PR_FALSE);
ss->delayDisabled = 1;
}
(void)SSL3_SendAlert(ss, alert_warning, close_notify);
}
rv = ssl_DefClose(ss);
return rv;
}
int
ssl_SecureClose(sslSocket *ss)
{
int rv;
if (ss->version >= SSL_LIBRARY_VERSION_3_0 &&
!(ss->shutdownHow & ssl_SHUTDOWN_SEND) &&
ss->firstHsDone &&
!ss->recvdCloseNotify &&
ss->ssl3.initialized) {
if (!ss->delayDisabled) {
ssl_EnableNagleDelay(ss, PR_FALSE);
ss->delayDisabled = 1;
}
(void) SSL3_SendAlert(ss, alert_warning, close_notify);
}
rv = ssl_DefClose(ss);
return rv;
}
