[GitHub] [incubator-nuttx] anchao commented on a change in pull request #5526: net/tcp: add support for send timeout on buffer mode

[GitBox]

anchao commented on a change in pull request #5526:
URL: https://github.com/apache/incubator-nuttx/pull/5526#discussion_r808867410



##########
File path: net/tcp/tcp_send_buffered.c
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@@ -1172,7 +1190,25 @@ ssize_t psock_tcp_send(FAR struct socket *psock, FAR 
const void *buf,
               goto errout_with_lock;
             }
 
-          net_lockedwait_uninterruptible(&conn->snd_sem);
+          current = TICK2MSEC(clock_systime_ticks());
+          if (expire == UINT_MAX)
+            {
+              remain = UINT_MAX;
+            }
+          else if (expire > current)
+            {
+              remain = expire - current;
+            }
+          else
+            {
+              remain = 0;

Review comment:
       ```
   if (expire == UINT_MAX)
     {
       remain = UINT_MAX;    <--- wait
     }
   else if (expire > current)
     {
       remain = expire - current;   <--- timed wait
     }
   else
     {
       remain = 0;                       <----- trywait
     }
   
   ```
   
   remain in 0 is meaningful and is used to identify try wait




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