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Fixed select not reporting received FIN as 'readable' in certain rare cases (bug #43779: select(), close(), and TCP retransmission error)

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sg 2015-02-18 20:38:42 +01:00
parent 9048a7f021
commit 998ed99288
2 changed files with 8 additions and 4 deletions
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8
CHANGELOG
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@ -6,10 +6,6 @@ HISTORY
++ New features:
2015-02-17: Sylvain Rochet
* Large PPP rework, moved out low level protocols code (PPPoS, PPPoE, PPPoL2TP)
from PPP core code, making everything simpler.
2015-02-16: Claudius Zingerli, Sergio Caprile
* opt.h, dhcp.h/.c: patch #8361 "Add support for NTP option in DHCP"
@ -190,6 +186,10 @@ HISTORY
++ Bugfixes:
2015-02-18: Simon Goldschmidt
* sockets.c: Fixed select not reporting received FIN as 'readable' in certain
rare cases (bug #43779: select(), close(), and TCP retransmission error)
2015-02-17: Simon Goldschmidt
* err.h, sockets.c, api_msg.c: fixed bug #38853 "connect() use a wrong errno":
return ERR_ALREADY/EALRADY during connect, ERR_ISCONN/EISCONN when already

4
src/api/sockets.c
View File

@ -730,6 +730,10 @@ lwip_recvfrom(int s, void *mem, size_t len, int flags,
if (off > 0) {
/* update receive window */
netconn_recved(sock->conn, (u32_t)off);
if (err == ERR_CLSD) {
/* closed but already received data, ensure select gets the FIN, too */
event_callback(sock->conn, NETCONN_EVT_RCVPLUS, 0);
}
/* already received data, return that */
sock_set_errno(sock, 0);
return off;