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udp.c File Reference
UDP (User Datagram Protocol) More...
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Functions | |
| error_t | udpInit (void) |
| UDP related initialization. | |
| uint16_t | udpGetDynamicPort (void) |
| Get an ephemeral port number. | |
| error_t | udpProcessDatagram (NetInterface *interface, IpPseudoHeader *pseudoHeader, const NetBuffer *buffer, size_t offset) |
| Incoming UDP datagram processing. | |
| error_t | udpSendDatagram (Socket *socket, const IpAddr *destIpAddr, uint16_t destPort, const void *data, size_t length, size_t *written) |
| Send a UDP datagram. | |
| error_t | udpSendDatagramEx (NetInterface *interface, uint16_t srcPort, const IpAddr *destIpAddr, uint16_t destPort, NetBuffer *buffer, size_t offset, uint8_t ttl) |
| Send a UDP datagram (raw interface) | |
| error_t | udpReceiveDatagram (Socket *socket, IpAddr *srcIpAddr, uint16_t *srcPort, IpAddr *destIpAddr, void *data, size_t size, size_t *received, uint_t flags) |
| Receive data from a UDP socket. | |
| NetBuffer * | udpAllocBuffer (size_t length, size_t *offset) |
| Allocate a buffer to hold a UDP packet. | |
| void | udpUpdateEvents (Socket *socket) |
| Update UDP related events. | |
| error_t | udpAttachRxCallback (NetInterface *interface, uint16_t port, UdpRxCallback callback, void *params) |
| Register user callback. | |
| error_t | udpDetachRxCallback (NetInterface *interface, uint16_t port) |
| Unregister user callback. | |
| error_t | udpInvokeRxCallback (NetInterface *interface, const IpPseudoHeader *pseudoHeader, const UdpHeader *header, const NetBuffer *buffer, size_t offset) |
| Invoke user callback. | |
| void | udpDumpHeader (const UdpHeader *datagram) |
| Dump UDP header for debugging purpose. | |
Detailed Description
UDP (User Datagram Protocol)
License
Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.
This file is part of CycloneTCP Open.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- Version:
- 1.7.6
Definition in file udp.c.
Function Documentation
| NetBuffer* udpAllocBuffer | ( | size_t | length, |
| size_t * | offset | ||
| ) |
| error_t udpAttachRxCallback | ( | NetInterface * | interface, |
| uint16_t | port, | ||
| UdpRxCallback | callback, | ||
| void * | params | ||
| ) |
| error_t udpDetachRxCallback | ( | NetInterface * | interface, |
| uint16_t | port | ||
| ) |
| void udpDumpHeader | ( | const UdpHeader * | datagram ) |
| uint16_t udpGetDynamicPort | ( | void | ) |
| error_t udpInit | ( | void | ) |
| error_t udpInvokeRxCallback | ( | NetInterface * | interface, |
| const IpPseudoHeader * | pseudoHeader, | ||
| const UdpHeader * | header, | ||
| const NetBuffer * | buffer, | ||
| size_t | offset | ||
| ) |
| error_t udpProcessDatagram | ( | NetInterface * | interface, |
| IpPseudoHeader * | pseudoHeader, | ||
| const NetBuffer * | buffer, | ||
| size_t | offset | ||
| ) |
| error_t udpReceiveDatagram | ( | Socket * | socket, |
| IpAddr * | srcIpAddr, | ||
| uint16_t * | srcPort, | ||
| IpAddr * | destIpAddr, | ||
| void * | data, | ||
| size_t | size, | ||
| size_t * | received, | ||
| uint_t | flags | ||
| ) |
Receive data from a UDP socket.
- Parameters:
-
[in] socket Handle referencing the socket [out] srcIpAddr Source IP address (optional) [out] srcPort Source port number (optional) [out] destIpAddr Destination IP address (optional) [out] data Buffer where to store the incoming data [in] size Maximum number of bytes that can be received [out] received Number of bytes that have been received [in] flags Set of flags that influences the behavior of this function
- Returns:
- Error code
| error_t udpSendDatagram | ( | Socket * | socket, |
| const IpAddr * | destIpAddr, | ||
| uint16_t | destPort, | ||
| const void * | data, | ||
| size_t | length, | ||
| size_t * | written | ||
| ) |
Send a UDP datagram.
- Parameters:
-
[in] socket Handle referencing the socket [in] destIpAddr IP address of the target host [in] destPort Target port number [in] data Pointer to data payload [in] length Length of the payload data [out] written Actual number of bytes written (optional parameter)
- Returns:
- Error code
| error_t udpSendDatagramEx | ( | NetInterface * | interface, |
| uint16_t | srcPort, | ||
| const IpAddr * | destIpAddr, | ||
| uint16_t | destPort, | ||
| NetBuffer * | buffer, | ||
| size_t | offset, | ||
| uint8_t | ttl | ||
| ) |
Send a UDP datagram (raw interface)
- Parameters:
-
[in] interface Underlying network interface [in] srcPort Source port [in] destIpAddr IP address of the target host [in] destPort Target port number [in] buffer Multi-part buffer containing the payload [in] offset Offset to the first payload byte [in] ttl TTL value. Default Time-To-Live is used when this parameter is zero
- Returns:
- Error code
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