SSL_PENDING(3)

NAME
SSL_pending - obtain number of readable bytes buffered in an SSL object

SYNOPSIS
#include <openssl/ssl.h>
int
SSL_pending(const SSL *ssl);

DESCRIPTION
Data is received in whole blocks known as records from the peer. A whole record is processed, for example decrypted, in one go and is buffered until it is read by the application via a call to SSL_read(3).

SSL_pending() returns the number of bytes of application data which are available for immediate read.

SSL_pending() takes into account only bytes from the TLS/SSL record that is currently being processed (if any).

RETURN VALUES
SSL_pending() returns the number of buffered and processed application data bytes that are pending and are available for immediate read.

SEE ALSO
ssl(3), SSL_read(3)

HISTORY
SSL_pending() appeared in SSLeay 0.4 or earlier and has been available since OpenBSD 2.4.

BUGS
Up to OpenSSL 0.9.6, SSL_pending() did not check if the record type of pending data is application data.