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Fix netconn/socket race condition when receiving RST while waiting on recvmbox

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sg 2016-10-07 21:46:26 +02:00
parent ed239c4e71
commit 0a343948d9
1 changed files with 4 additions and 0 deletions
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4
src/api/api_lib.c
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@ -544,6 +544,10 @@ netconn_recv_data(struct netconn *conn, void **new_buf)
/* If we are closed, we indicate that we no longer wish to use the socket */
if (buf == NULL) {
API_EVENT(conn, NETCONN_EVT_RCVMINUS, 0);
if (conn->pcb.ip == NULL) {
/* race condition: RST during recv */
return conn->last_err == ERR_OK ? ERR_RST : conn->last_err;
}
/* RX side is closed, so deallocate the recvmbox */
netconn_close_shutdown(conn, NETCONN_SHUT_RD);
/* Don' store ERR_CLSD as conn->err since we are only half-closed */