Add an SSL_has_pending() function

This is similar to SSL_pending() but just returns a 1 if there is data
pending in the internal OpenSSL buffers or 0 otherwise (as opposed to
SSL_pending() which returns the number of bytes available). Unlike
SSL_pending() this will work even if "read_ahead" is set (which is the
case if you are using read pipelining, or if you are doing DTLS). A 1
return value means that we have unprocessed data. It does *not* necessarily
indicate that there will be application data returned from a call to
SSL_read(). The unprocessed data may not be application data or there
could be errors when we attempt to parse the records.

Reviewed-by: Tim Hudson <tjh@openssl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/ssl/record/record.h b/ssl/record/record.h
index a1febc5551..c8c73d8470 100644
--- a/ssl/record/record.h
+++ b/ssl/record/record.h
@@ -322,8 +322,8 @@ typedef struct record_layer_st {
 void RECORD_LAYER_init(RECORD_LAYER *rl, SSL *s);
 void RECORD_LAYER_clear(RECORD_LAYER *rl);
 void RECORD_LAYER_release(RECORD_LAYER *rl);
-int RECORD_LAYER_read_pending(RECORD_LAYER *rl);
-int RECORD_LAYER_write_pending(RECORD_LAYER *rl);
+int RECORD_LAYER_read_pending(const RECORD_LAYER *rl);
+int RECORD_LAYER_write_pending(const RECORD_LAYER *rl);
 int RECORD_LAYER_set_data(RECORD_LAYER *rl, const unsigned char *buf, int len);
 void RECORD_LAYER_reset_read_sequence(RECORD_LAYER *rl);
 void RECORD_LAYER_reset_write_sequence(RECORD_LAYER *rl);