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Merge pull request #9900 from michalpasztamobica/dns_async_handle_would_block 

DNS send returning WOULD_BLOCK forces delayed retry
pull/10068/head
Martin Kojtal 2019-03-14 13:01:20 +01:00 committed by GitHub
parent 943254c78c ee056daf86
commit 5252163534
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1 changed files with 8 additions and 1 deletions
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7
features/netsocket/nsapi_dns.cpp
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@ -1021,7 +1021,14 @@ static void nsapi_dns_query_async_send(void *ptr)
err = query->socket->sendto(dns_addr, packet, len); err = query->socket->sendto(dns_addr, packet, len);
if (err < 0) { if (err < 0) {
if (err == NSAPI_ERROR_WOULD_BLOCK) {
nsapi_dns_call_in(query->call_in_cb, DNS_TIMER_TIMEOUT, mbed::callback(nsapi_dns_query_async_send, ptr));
free(packet);
dns_mutex->unlock();
return; // Timeout handler will retry the connection if possible
} else {
query->dns_server++; query->dns_server++;
}
} else { } else {
break; break;
} }