123
UdpSocket.h
- Committer:
- advxolltm
- Date:
- 2022-06-06
- Revision:
- 19:543c2d21e510
- Parent:
- 14:7648334eb41b
File content as of revision 19:543c2d21e510:
/* UIPUdp.h - Arduino implementation of a UIP wrapper class. Copyright (c) 2013 Norbert Truchsess <norbert.truchsess@t-online.de> All rights reserved. Modified (ported to mbed) by Zoltan Hudak <hudakz@inbox.com> 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 3 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, see <http://www.gnu.org/licenses/>. */ #ifndef UDPSOCKET_h #define UDPSOCKET_h #include "mbed.h" #include "SocketAddress.h" #include "utility/Udp.h" #include "IpAddress.h" #include "utility/MemPool.h" extern "C" { #include "utility/uip.h" } #define UIP_UDP_MAXDATALEN 1500 #define UIP_UDP_PHYH_LEN UIP_LLH_LEN + UIP_IPUDPH_LEN #define UIP_UDP_MAXPACKETSIZE UIP_UDP_MAXDATALEN + UIP_UDP_PHYH_LEN typedef struct { memaddress out_pos; memhandle packet_next; memhandle packet_in; memhandle packet_out; bool send; } uip_udp_userdata_t; class UipEthernet; class UdpSocket : public Udp { private: uip_udp_userdata_t appdata; struct uip_udp_conn* _uip_udp_conn; SocketAddress _remote_addr; int _timeout_ms; public: UdpSocket(); // Constructor UdpSocket(int timeout_ms); // Constructor UdpSocket(UipEthernet* ethernet, int timeout_ms = 1000); virtual ~UdpSocket() { } // Virtual destructor uint8_t begin(uint16_t port); // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use void stop(); // Finish with the UDP socket void close(); // Close the UDP socket // Sending UDP packets // Start building up a packet to send to the remote host specific in ip and port // Returns 1 if successful, 0 if there was a problem with the supplied IP address or port int beginPacket(IpAddress ip, uint16_t port); // Start building up a packet to send to the remote host specific in host and port // Returns 1 if successful, 0 if there was a problem resolving the hostname or port int beginPacket(const char* host, uint16_t port); // Finish off this packet and send it // Returns 1 if the packet was sent successfully, 0 if there was an error int endPacket(); // Write a single byte into the packet size_t write(uint8_t); // Write size bytes from buffer into the packet size_t write(const uint8_t* buffer, size_t size); // using Print::write; // Start processing the next available incoming packet // Returns the size of the packet in bytes, or 0 if no packets are available int parsePacket(); // Number of bytes remaining in the current packet size_t available(); // Read a single byte from the current packet int read(); // Read up to len bytes from the current packet and place them into buffer // Returns the number of bytes read, or 0 if none are available size_t read(unsigned char* buffer, size_t len); // Read up to len characters from the current packet and place them into buffer // Returns the number of characters read, or 0 if none are available size_t read(char* buffer, size_t len) { return read((unsigned char*)buffer, len); } // Return the next byte from the current packet without moving on to the next byte int peek(); void flush(); // Finish reading the current packet // Return the IP address of the host who sent the current incoming packet IpAddress remoteIP(); // Return the port of the host who sent the current incoming packet uint16_t remotePort(); // Send data to the specified host and port. nsapi_size_or_error_t sendto (const char *host, uint16_t port, const void *data, size_t size); // Send data to the specified address. nsapi_size_or_error_t sendto (const SocketAddress &address, const void *data, size_t size); // Receive a datagram and store the source address in address if it's not NULL. nsapi_size_or_error_t recvfrom (SocketAddress *address, void *data, size_t size); private: friend void uipudp_appcall(); friend class UipEthernet; static void _send(uip_udp_userdata_t* data); }; #endif