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Added function for sending an UDP packet to a specified IP address and port number over an existing UDP connection

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This commit is contained in:
adamdunkels 2009-10-18 22:02:01 +00:00
parent e14a30262c
commit fb037e0afb
2 changed files with 26 additions and 2 deletions
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24
core/net/uip-udp-packet.c
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@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: uip-udp-packet.c,v 1.6 2008/10/14 13:39:12 julienabeille Exp $ * $Id: uip-udp-packet.c,v 1.7 2009/10/18 22:02:01 adamdunkels Exp $
*/ */
/** /**
@ -67,3 +67,25 @@ uip_udp_packet_send(struct uip_udp_conn *c, const void *data, int len)
#endif /* UIP_UDP */ #endif /* UIP_UDP */
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
void
uip_udp_packet_sendto(struct uip_udp_conn *c, const void *data, int len,
const uip_ipaddr_t *toaddr, uint16_t toport)
{
uip_ipaddr_t curaddr;
uint16_t curport;
/* Save current IP addr/port. */
uip_ipaddr_copy(&curaddr, &c->ripaddr);
curport = c->rport;
/* Load new IP addr/port */
uip_ipaddr_copy(&c->ripaddr, toaddr);
c->rport = toport;
uip_udp_packet_send(c, data, len);
/* Restore old IP addr/port */
uip_ipaddr_copy(&c->ripaddr, &curaddr);
c->rport = curport;
}
/*---------------------------------------------------------------------------*/

4
core/net/uip-udp-packet.h
View file

@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: uip-udp-packet.h,v 1.2 2007/04/30 15:19:53 bg- Exp $ * $Id: uip-udp-packet.h,v 1.3 2009/10/18 22:02:01 adamdunkels Exp $
*/ */
/** /**
@ -44,5 +44,7 @@
#include "net/uip.h" #include "net/uip.h"
void uip_udp_packet_send(struct uip_udp_conn *c, const void *data, int len); void uip_udp_packet_send(struct uip_udp_conn *c, const void *data, int len);
void uip_udp_packet_sendto(struct uip_udp_conn *c, const void *data, int len,
const uip_ipaddr_t *toaddr, uint16_t toport);
#endif /* __UIP_UDP_PACKET_H__ */ #endif /* __UIP_UDP_PACKET_H__ */