fjpanag commented on code in PR #7286:
URL: https://github.com/apache/incubator-nuttx/pull/7286#discussion_r994331743
##########
net/tcp/tcp_recvfrom.c:
##########
@@ -412,7 +412,8 @@ static uint16_t tcp_recvhandler(FAR struct net_driver_s
*dev,
* next receive is performed.
*/
- if (pstate->ir_recvlen > 0)
+ if ((pstate->ir_recvlen > 0 && (flags & TCP_WAITALL) == 0) ||
+ pstate->ir_buflen == 0)
Review Comment:
No, as I see `tcp_update_recvlen()` will increase `ir_recvlen` towards the
requested amount of data. But this function does not know how much data are
requested. On the contrary, the same function will decrease `ir_buflen` towards
zero. With zero meaning that all needed data are here.
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