522 lines
20 KiB
C++
Executable File
522 lines
20 KiB
C++
Executable File
/*! \file piethernet.h
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* \brief Ethernet device
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*/
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/*
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PIP - Platform Independent Primitives
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Ethernet, UDP/TCP Broadcast/Multicast
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Copyright (C) 2018 Ivan Pelipenko peri4ko@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PIETHERNET_H
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#define PIETHERNET_H
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#include "pitimer.h"
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#include "piiodevice.h"
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#ifdef ANDROID
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struct
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#else
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class
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#endif
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sockaddr;
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class PIP_EXPORT PIEthernet: public PIIODevice
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{
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PIIODEVICE(PIEthernet)
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friend class PIPeer;
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public:
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//! Contructs UDP %PIEthernet with empty read address
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explicit PIEthernet();
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//! \brief Type of %PIEthernet
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enum PIP_EXPORT Type {
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UDP /** UDP - User Datagram Protocol */ ,
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TCP_Client /** TCP client - allow connection to TCP server */ ,
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TCP_Server /** TCP server - receive connections from TCP clients */ ,
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TCP_SingleTCP /** TCP client single mode - connect & send & disconnect, on each packet */
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};
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//! \brief Parameters of %PIEthernet
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enum PIP_EXPORT Parameters {
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ReuseAddress /** Rebind address if there is already binded. Enabled by default */ = 0x1,
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Broadcast /** Broadcast send. Disabled by default */ = 0x2,
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SeparateSockets /** If this parameter is set, %PIEthernet will initialize two different sockets,
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for receive and send, instead of single one. Disabled by default */ = 0x4,
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MulticastLoop /** Enable receiving multicast packets from same host. Enabled by default */ = 0x8,
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KeepConnection /** Automatic reconnect TCP connection on disconnect. Enabled by default */ = 0x10,
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DisonnectOnTimeout /** Disconnect TCP connection on read timeout expired. Disabled by default */ = 0x20
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};
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//! \brief IPv4 network address, IP and port
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class Address {
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friend class PIEthernet;
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friend inline PIByteArray & operator <<(PIByteArray & s, const PIEthernet::Address & v);
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friend inline PIByteArray & operator >>(PIByteArray & s, PIEthernet::Address & v);
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public:
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//! Contructs %Address with binary representation of IP and port
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Address(uint ip = 0, ushort port = 0);
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//! Contructs %Address with string representation "i.i.i.i:p"
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Address(const PIString & ip_port);
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//! Contructs %Address with IP string representation "i.i.i.i" and port
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Address(const PIString & ip, ushort port);
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//! Returns binary IP
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uint ip() const {return ip_;}
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//! Returns port
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ushort port() const {return port_;}
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//! Returns string IP
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PIString ipString() const;
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//! Returns string representation of IP and port "i.i.i.i:p"
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PIString toString() const;
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//! Set address IP
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void setIP(uint ip);
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//! Set address IP
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void setIP(const PIString & ip);
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//! Set address port
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void setPort(ushort port);
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//! Set address IP and port, "i.i.i.i:p"
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void set(const PIString & ip_port);
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//! Set address IP and port, "i.i.i.i"
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void set(const PIString & ip, ushort port);
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//! Set address binary IP and port
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void set(uint ip, ushort port);
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//! Set IP and port to 0
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void clear();
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//! Returns if IP and port is 0
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bool isNull() const;
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//! Resolve hostname "host:port" and return it address or null address on error
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static Address resolve(const PIString & host_port);
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//! Resolve hostname "host" with port "port" and return it address or null address on error
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static Address resolve(const PIString & host, ushort port);
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static void splitIPPort(const PIString & ipp, PIString * ip, int * port);
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private:
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void initIP(const PIString & _ip);
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union {
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uint ip_;
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uchar ip_b[4];
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};
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ushort port_;
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};
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//! Contructs %PIEthernet with type "type", read address "ip_port" and parameters "params"
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explicit PIEthernet(Type type, const PIString & ip_port = PIString(), const PIFlags<Parameters> params = PIEthernet::ReuseAddress | PIEthernet::MulticastLoop | PIEthernet::KeepConnection);
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virtual ~PIEthernet();
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//! Set read address
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void setReadAddress(const PIString & ip, int port) {addr_r.set(ip, port); setPath(addr_r.toString());}
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//! Set read address in format "i.i.i.i:p"
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void setReadAddress(const PIString & ip_port) {addr_r.set(ip_port); setPath(addr_r.toString());}
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//! Set read address
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void setReadAddress(const Address & addr) {addr_r = addr; setPath(addr_r.toString());}
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//! Set read IP
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void setReadIP(const PIString & ip) {addr_r.setIP(ip); setPath(addr_r.toString());}
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//! Set read port
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void setReadPort(int port) {addr_r.setPort(port); setPath(addr_r.toString());}
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//! Set send address
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void setSendAddress(const PIString & ip, int port) {addr_s.set(ip, port);}
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//! Set send address in format "i.i.i.i:p"
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void setSendAddress(const PIString & ip_port) {addr_s.set(ip_port);}
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//! Set send address
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void setSendAddress(const Address & addr) {addr_s = addr;}
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//! Set send IP
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void setSendIP(const PIString & ip) {addr_s.setIP(ip);}
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//! Set send port
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void setSendPort(int port) {addr_s.setPort(port);}
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//! Returns read address in format "i.i.i.i:p"
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Address readAddress() const {return addr_r;}
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//! Returns read IP
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PIString readIP() const {return addr_r.ipString();}
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//! Returns read port
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int readPort() const {return addr_r.port();}
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//! Returns send address in format "i.i.i.i:p"
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Address sendAddress() const {return addr_s;}
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//! Returns send IP
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PIString sendIP() const {return addr_s.ipString();}
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//! Returns send port
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int sendPort() const {return addr_s.port();}
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//! Returns address of last received UDP packet in format "i.i.i.i:p"
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Address lastReadAddress() const {return addr_lr;}
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//! Returns IP of last received UDP packet
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PIString lastReadIP() const {return addr_lr.ipString();}
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//! Returns port of last received UDP packet
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int lastReadPort() const {return addr_lr.port();}
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//! Set parameters to "parameters_". You should to reopen %PIEthernet to apply them
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void setParameters(PIFlags<PIEthernet::Parameters> parameters_) {setProperty(PIStringAscii("parameters"), (int)parameters_);}
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//! Set parameter "parameter" to state "on". You should to reopen %PIEthernet to apply this
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void setParameter(PIEthernet::Parameters parameter, bool on = true);
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//! Returns if parameter "parameter" is set
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bool isParameterSet(PIEthernet::Parameters parameter) const {return ((PIFlags<PIEthernet::Parameters>)(property(PIStringAscii("parameters")).toInt()))[parameter];}
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//! Returns parameters
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PIFlags<PIEthernet::Parameters> parameters() const {return (PIFlags<PIEthernet::Parameters>)(property(PIStringAscii("parameters")).toInt());}
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//PIByteArray macAddress() {if (!init_) init(); struct ifreq ifr; memset(&ifr, 0, sizeof(ifr)); memcpy(ifr.ifr_name, "eth0", 5); ioctl(sock, SIOCSIFHWADDR, &ifr); return PIByteArray(&ifr.ifr_hwaddr.sa_data, 6);}
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//! Returns %PIEthernet type
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Type type() const {return (Type)(property(PIStringAscii("type")).toInt());}
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//! Returns read timeout
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double readTimeout() const {return property(PIStringAscii("readTimeout")).toDouble();}
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//! Returns write timeout
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double writeTimeout() const {return property(PIStringAscii("writeTimeout")).toDouble();}
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//! Set timeout for read
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void setReadTimeout(double ms) {setProperty(PIStringAscii("readTimeout"), ms);}
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//! Set timeout for write
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void setWriteTimeout(double ms) {setProperty(PIStringAscii("writeTimeout"), ms);}
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//! Returns TTL (Time To Live)
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int TTL() const {return property(PIStringAscii("TTL")).toInt();}
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//! Returns multicast TTL (Time To Live)
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int multicastTTL() const {return property(PIStringAscii("MulticastTTL")).toInt();}
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//! Set TTL (Time To Live), default is 64
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void setTTL(int ttl) {setProperty(PIStringAscii("TTL"), ttl);}
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//! Set multicast TTL (Time To Live), default is 1
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void setMulticastTTL(int ttl) {setProperty(PIStringAscii("MulticastTTL"), ttl);}
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//! Join to multicast group with address "group". Use only for UDP
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bool joinMulticastGroup(const PIString & group);
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//! Leave multicast group with address "group". Use only for UDP
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bool leaveMulticastGroup(const PIString & group);
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//! Returns joined multicast groups. Use only for UDP
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const PIStringList & multicastGroups() const {return mcast_groups;}
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//! Connect to TCP server with address \a readAddress(). Use only for TCP_Client
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bool connect();
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//! Connect to TCP server with address "ip":"port". Use only for TCP_Client
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bool connect(const PIString & ip, int port) {setPath(ip + PIStringAscii(":") + PIString::fromNumber(port)); return connect();}
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//! Connect to TCP server with address "ip_port". Use only for TCP_Client
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bool connect(const PIString & ip_port) {setPath(ip_port); return connect();}
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//! Connect to TCP server with address "addr". Use only for TCP_Client
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bool connect(const Address & addr) {setPath(addr.toString()); return connect();}
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//! Returns if %PIEthernet connected to TCP server. Use only for TCP_Client
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bool isConnected() const {return connected_;}
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//! Returns if %PIEthernet is connecting to TCP server. Use only for TCP_Client
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bool isConnecting() const {return connecting_;}
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//! Start listen for incoming TCP connections on address \a readAddress(). Use only for TCP_Server
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bool listen(bool threaded = false);
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//! Start listen for incoming TCP connections on address "ip":"port". Use only for TCP_Server
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bool listen(const PIString & ip, int port, bool threaded = false) {setReadAddress(ip, port); return listen(threaded);}
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//! Start listen for incoming TCP connections on address "ip_port". Use only for TCP_Server
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bool listen(const PIString & ip_port, bool threaded = false) {setReadAddress(ip_port); return listen(threaded);}
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//! Start listen for incoming TCP connections on address "addr". Use only for TCP_Server
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bool listen(const Address & addr, bool threaded = false) {setReadAddress(addr); return listen(threaded);}
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PIEthernet * client(int index) {return clients_[index];}
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int clientsCount() const {return clients_.size_s();}
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PIVector<PIEthernet * > clients() const {return clients_;}
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//! Send data "data" with size "size" to address \a sendAddress() for UDP or \a readAddress() for TCP_Client
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bool send(const void * data, int size, bool threaded = false) {if (threaded) {writeThreaded(data, size); return true;} return (write(data, size) == size);}
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//! Send data "data" with size "size" to address "ip":"port"
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bool send(const PIString & ip, int port, const void * data, int size, bool threaded = false) {addr_s.set(ip, port); if (threaded) {writeThreaded(data, size); return true;} return send(data, size);}
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//! Send data "data" with size "size" to address "ip_port"
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bool send(const PIString & ip_port, const void * data, int size, bool threaded = false) {addr_s.set(ip_port); if (threaded) {writeThreaded(data, size); return true;} return send(data, size);}
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//! Send data "data" with size "size" to address "addr"
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bool send(const Address & addr, const void * data, int size, bool threaded = false) {addr_s = addr; if (threaded) {writeThreaded(data, size); return true;} return send(data, size);}
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//! Send data "data" to address \a sendAddress() for UDP or \a readAddress() for TCP_Client
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bool send(const PIByteArray & data, bool threaded = false) {if (threaded) {writeThreaded(data); return true;} return (write(data) == data.size_s());}
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//! Send data "data" to address "ip":"port" for UDP
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bool send(const PIString & ip, int port, const PIByteArray & data, bool threaded = false) {addr_s.set(ip, port); if (threaded) {writeThreaded(data); return true;} return send(data);}
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//! Send data "data" to address "ip_port" for UDP
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bool send(const PIString & ip_port, const PIByteArray & data, bool threaded = false) {addr_s.set(ip_port); if (threaded) {writeThreaded(data); return true;} return (write(data) == data.size_s());}
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//! Send data "data" to address "addr" for UDP
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bool send(const Address & addr, const PIByteArray & data, bool threaded = false) {addr_s = addr; if (threaded) {writeThreaded(data); return true;} return (write(data) == data.size_s());}
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virtual bool canWrite() const {return mode() & WriteOnly;}
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EVENT1(newConnection, PIEthernet * , client)
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EVENT0(connected)
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EVENT1(disconnected, bool, withError)
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//! Flags of network interface
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enum PIP_EXPORT InterfaceFlag {
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ifActive /** Is active */ = 0x1,
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ifRunning /** Is running */ = 0x2,
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ifBroadcast /** Support broadcast */ = 0x4,
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ifMulticast /** Support multicast */ = 0x8,
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ifLoopback /** Is loopback */ = 0x10,
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ifPTP /** Is point-to-point */ = 0x20
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};
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//! %PIFlags of network interface flags
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typedef PIFlags<InterfaceFlag> InterfaceFlags;
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//! Network interface descriptor
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struct PIP_EXPORT Interface {
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//! System index
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int index;
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//! MTU
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int mtu;
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//! System name
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PIString name;
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//! MAC address in format "hh:hh:hh:hh:hh:hh" or empty if there is no MAC address
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PIString mac;
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//! IP address in format "i.i.i.i" or empty if there is no IP address
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PIString address;
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//! Netmask of IP address in format "i.i.i.i" or empty if there is no netmask
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PIString netmask;
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//! Broadcast address in format "i.i.i.i" or empty if there is no broadcast address
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PIString broadcast;
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//! Point-to-point address or empty if there is no point-to-point address
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PIString ptp;
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//! Flags of interface
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InterfaceFlags flags;
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//! Returns if interface is active
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bool isActive() const {return flags[PIEthernet::ifActive];}
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//! Returns if interface is running
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bool isRunning() const {return flags[PIEthernet::ifRunning];}
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//! Returns if interface support broadcast
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bool isBroadcast() const {return flags[PIEthernet::ifBroadcast];}
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//! Returns if interface support multicast
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bool isMulticast() const {return flags[PIEthernet::ifMulticast];}
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//! Returns if interface is loopback
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bool isLoopback() const {return flags[PIEthernet::ifLoopback];}
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//! Returns if interface is point-to-point
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bool isPTP() const {return flags[PIEthernet::ifPTP];}
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};
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//! Array of \a Interface with some features
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class PIP_EXPORT InterfaceList: public PIVector<PIEthernet::Interface> {
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public:
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InterfaceList(): PIVector<PIEthernet::Interface>() {}
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//! Get interface with system index "index" or 0 if there is no one
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const Interface * getByIndex(int index) const {for (int i = 0; i < size_s(); ++i) if ((*this)[i].index == index) return &((*this)[i]); return 0;}
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//! Get interface with system name "name" or 0 if there is no one
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const Interface * getByName(const PIString & name) const {for (int i = 0; i < size_s(); ++i) if ((*this)[i].name == name) return &((*this)[i]); return 0;}
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//! Get interface with IP address "address" or 0 if there is no one
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const Interface * getByAddress(const PIString & address) const {for (int i = 0; i < size_s(); ++i) if ((*this)[i].address == address) return &((*this)[i]); return 0;}
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//! Get loopback interface or 0 if there is no one
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const Interface * getLoopback() const {for (int i = 0; i < size_s(); ++i) if ((*this)[i].isLoopback()) return &((*this)[i]); return 0;}
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};
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//! Returns all system network interfaces
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static InterfaceList interfaces();
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static PIEthernet::Address interfaceAddress(const PIString & interface_);
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//! Returns all system network IP addresses
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static PIVector<PIEthernet::Address> allAddresses();
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static PIString macFromBytes(const PIByteArray & mac);
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static PIByteArray macToBytes(const PIString & mac);
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static PIString applyMask(const PIString & ip, const PIString & mask);
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static Address applyMask(const Address & ip, const Address & mask);
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static PIString getBroadcast(const PIString & ip, const PIString & mask);
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static Address getBroadcast(const Address & ip, const Address & mask);
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//! \events
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//! \{
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//! \fn void newConnection(PIEthernet * client)
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//! \brief Raise on new TCP connection received
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//! \fn void connected()
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//! \brief Raise if succesfull TCP connection
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//! \fn void disconnected(bool withError)
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//! \brief Raise if TCP connection was closed
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//! \}
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//! \ioparams
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//! \{
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#ifdef DOXYGEN
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//! \brief read ip, default ""
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string ip;
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//! \brief read port, default 0
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int port;
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//! \brief ethernet parameters
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int parameters;
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//! \brief read timeout, default 1000 ms
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double readTimeout;
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//! \brief write timeout, default 1000 ms
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double writeTimeout;
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//! \brief time-to-live, default 64
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int TTL;
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//! \brief time-to-live for multicast, default 1
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int multicastTTL;
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#endif
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//! \}
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protected:
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explicit PIEthernet(int sock, PIString ip_port);
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void propertyChanged(const PIString & name);
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PIString fullPathPrefix() const {return PIStringAscii("eth");}
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PIString constructFullPathDevice() const;
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void configureFromFullPathDevice(const PIString & full_path);
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bool configureDevice(const void * e_main, const void * e_parent = 0);
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int readDevice(void * read_to, int max_size);
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int writeDevice(const void * data, int max_size);
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DeviceInfoFlags deviceInfoFlags() const;
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//! Executes when any read function was successful. Default implementation does nothing
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virtual void received(const void * data, int size) {;}
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void construct();
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bool init();
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bool openDevice();
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bool closeDevice();
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void closeSocket(int & sd);
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void applyTimeouts();
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void applyTimeout(int fd, int opt, double ms);
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void applyOptInt(int level, int opt, int val);
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PRIVATE_DECLARATION
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int sock, sock_s;
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bool connected_, connecting_, listen_threaded, server_bounded;
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mutable Address addr_r, addr_s, addr_lr;
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PIThread server_thread_;
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PIMutex clients_mutex;
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PIVector<PIEthernet * > clients_;
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PIQueue<PIString> mcast_queue;
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PIStringList mcast_groups;
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private:
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EVENT_HANDLER(void, clientDeleted);
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static void server_func(void * eth);
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void setType(Type t, bool reopen = true) {setProperty(PIStringAscii("type"), (int)t); if (reopen && isOpened()) {closeDevice(); init(); openDevice();}}
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inline static int ethErrorCore();
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inline static PIString ethErrorString();
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inline static int ethRecv(int sock, void * buf, int size, int flags = 0);
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inline static int ethRecvfrom(int sock, void * buf, int size, int flags, sockaddr * addr);
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inline static int ethSendto(int sock, const void * buf, int size, int flags, sockaddr * addr, int addr_len);
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inline static void ethClosesocket(int sock, bool shutdown);
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inline static int ethSetsockopt(int sock, int level, int optname, const void * optval, int optlen);
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inline static int ethSetsockoptInt(int sock, int level, int optname, int value = 1);
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inline static int ethSetsockoptBool(int sock, int level, int optname, bool value = true);
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};
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inline bool operator <(const PIEthernet::Interface & v0, const PIEthernet::Interface & v1) {return (v0.name < v1.name);}
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inline bool operator ==(const PIEthernet::Interface & v0, const PIEthernet::Interface & v1) {return (v0.name == v1.name && v0.address == v1.address && v0.netmask == v1.netmask);}
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inline bool operator !=(const PIEthernet::Interface & v0, const PIEthernet::Interface & v1) {return (v0.name != v1.name || v0.address != v1.address || v0.netmask != v1.netmask);}
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inline PICout operator <<(PICout s, const PIEthernet::Address & v) {s.space(); s.setControl(0, true); s << "Address(" << v.toString() << ")"; s.restoreControl(); return s;}
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inline bool operator ==(const PIEthernet::Address & v0, const PIEthernet::Address & v1) {return (v0.ip() == v1.ip() && v0.port() == v1.port());}
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inline bool operator !=(const PIEthernet::Address & v0, const PIEthernet::Address & v1) {return (v0.ip() != v1.ip() || v0.port() != v1.port());}
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inline PIByteArray & operator <<(PIByteArray & s, const PIEthernet::Address & v) {s << v.ip_ << v.port_; return s;}
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inline PIByteArray & operator >>(PIByteArray & s, PIEthernet::Address & v) {s >> v.ip_ >> v.port_; return s;}
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#endif // PIETHERNET_H
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