mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2025-01-04 02:39:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source
This commit is contained in:
sg 2016-10-07 21:46:26 +02:00
parent ed239c4e71
commit 0a343948d9
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/api/api_lib.c
View File

@ -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 we are closed, we indicate that we no longer wish to use the socket */
if (buf == NULL) { if (buf == NULL) {
API_EVENT(conn, NETCONN_EVT_RCVMINUS, 0); 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 */ /* RX side is closed, so deallocate the recvmbox */
netconn_close_shutdown(conn, NETCONN_SHUT_RD); netconn_close_shutdown(conn, NETCONN_SHUT_RD);
/* Don' store ERR_CLSD as conn->err since we are only half-closed */ /* Don' store ERR_CLSD as conn->err since we are only half-closed */