diff options
Diffstat (limited to 'nuttx/net/recvfrom.c')
| -rw-r--r-- | nuttx/net/recvfrom.c | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/nuttx/net/recvfrom.c b/nuttx/net/recvfrom.c index 6bfbd31ad..6864dace3 100644 --- a/nuttx/net/recvfrom.c +++ b/nuttx/net/recvfrom.c @@ -1,7 +1,7 @@ /**************************************************************************** * net/recvfrom.c * - * Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved. + * Copyright (C) 2007-2009, 2011-2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -83,7 +83,7 @@ struct recvfrom_s FAR struct sockaddr_in *rf_from; /* Address of sender */ #endif size_t rf_recvlen; /* The received length */ - int rf_result; /* OK:success, failure:negated errno */ + int rf_result; /* Success:OK, failure:negated errno */ }; #endif /* CONFIG_NET_UDP || CONFIG_NET_TCP */ @@ -464,10 +464,11 @@ static inline void recvfrom_tcpsender(struct uip_driver_s *dev, struct recvfrom_ ****************************************************************************/ #ifdef CONFIG_NET_TCP -static uint16_t recvfrom_tcpinterrupt(struct uip_driver_s *dev, void *conn, - void *pvpriv, uint16_t flags) +static uint16_t recvfrom_tcpinterrupt(FAR struct uip_driver_s *dev, + FAR void *conn, FAR void *pvpriv, + uint16_t flags) { - struct recvfrom_s *pstate = (struct recvfrom_s *)pvpriv; + FAR struct recvfrom_s *pstate = (struct recvfrom_s *)pvpriv; nllvdbg("flags: %04x\n", flags); @@ -553,7 +554,7 @@ static uint16_t recvfrom_tcpinterrupt(struct uip_driver_s *dev, void *conn, else if ((flags & (UIP_CLOSE|UIP_ABORT|UIP_TIMEDOUT)) != 0) { - nllvdbg("error\n"); + nllvdbg("Lost connection\n"); /* Stop further callbacks */ @@ -561,17 +562,40 @@ static uint16_t recvfrom_tcpinterrupt(struct uip_driver_s *dev, void *conn, pstate->rf_cb->priv = NULL; pstate->rf_cb->event = NULL; - /* If the peer gracefully closed the connection, then return zero - * (end-of-file). Otherwise, report a not-connected error - */ + /* Handle loss-of-connection event */ + + net_lostconnection(pstate->rf_sock, flags); + + /* Check if the peer gracefully closed the connection. */ if ((flags & UIP_CLOSE) != 0) { + /* This case should always return success (zero)! The value of + * rf_recvlen, if zero, will indicate that the connection was + * gracefully closed. + */ + pstate->rf_result = 0; } else { + /* If no data has been received, then return ENOTCONN. + * Otherwise, let this return success. The failure will + * be reported the next time that recv[from]() is called. + */ + +#if CONFIG_NET_TCP_RECVDELAY > 0 + if (pstate->rf_recvlen > 0) + { + pstate->rf_result = 0; + } + else + { + pstate->rf_result = -ENOTCONN; + } +#else pstate->rf_result = -ENOTCONN; +#endif } /* Wake up the waiting thread */ |