fjpanag commented on code in PR #7286:
URL: https://github.com/apache/incubator-nuttx/pull/7286#discussion_r993895716
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net/tcp/tcp_recvfrom.c:
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@@ -698,43 +699,53 @@ ssize_t psock_tcp_recvfrom(FAR struct socket *psock, FAR
struct msghdr *msg,
/* We get here when we we decide that we need to setup the wait for
* incoming TCP/IP data. Just a few more conditions to check:
*
- * 1) Make sure thet there is buffer space to receive additional data
+ * 1) Make sure that there is buffer space to receive additional data
* (state.ir_buflen > 0). This could be zero, for example, we filled
* the user buffer with data from the read-ahead buffers. And
* 2) then we not want to wait if we already obtained some data from the
* read-ahead buffer. In that case, return now with what we have (don't
* want for more because there may be no timeout).
+ * 3) If however MSG_WAITALL flag is set, block here till all requested
+ * data are received (or there is a timeout / error).
*/
- if (state.ir_recvlen == 0 && state.ir_buflen > 0)
+ if (((flags & MSG_WAITALL) != 0 || state.ir_recvlen == 0) &&
+ state.ir_buflen > 0)
{
/* Set up the callback in the connection */
state.ir_cb = tcp_callback_alloc(conn);
if (state.ir_cb)
{
+ int ret2;
Review Comment:
I'll remove `ret2`, as commented bellow.
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