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-rw-r--r--assuan/assuan-buffer.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/assuan/assuan-buffer.c b/assuan/assuan-buffer.c
index 1fad0b5e..31f33945 100644
--- a/assuan/assuan-buffer.c
+++ b/assuan/assuan-buffer.c
@@ -491,6 +491,9 @@ _assuan_cookie_write_flush (void *cookie)
* a INQUIRE response. However, when assuan_transact() is used, this
* function takes care of sending END itself.
*
+ * If BUFFER is NULL and LENGTH is 1 and we are a client, a "CAN" is
+ * send instead of an "END".
+ *
* Return value: 0 on success or an error code
**/
@@ -499,7 +502,7 @@ assuan_send_data (assuan_context_t ctx, const void *buffer, size_t length)
{
if (!ctx)
return _assuan_error (ASSUAN_Invalid_Value);
- if (!buffer && length)
+ if (!buffer && length > 1)
return _assuan_error (ASSUAN_Invalid_Value);
if (!buffer)
@@ -508,7 +511,7 @@ assuan_send_data (assuan_context_t ctx, const void *buffer, size_t length)
if (ctx->outbound.data.error)
return ctx->outbound.data.error;
if (!ctx->is_server)
- return assuan_write_line (ctx, "END");
+ return assuan_write_line (ctx, length == 1? "CAN":"END");
}
else
{