Removed cruft from project
This commit is contained in:
Joseph Henry
159
attic/VirtualSocket.h
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159
attic/VirtualSocket.h
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/*
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* ZeroTier SDK - Network Virtualization Everywhere
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* Copyright (C) 2011-2018 ZeroTier, Inc. https://www.zerotier.com/
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*
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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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*
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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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*
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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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* --
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*
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* You can be released from the requirements of the license by purchasing
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* a commercial license. Buying such a license is mandatory as soon as you
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* develop commercial closed-source software that incorporates or links
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* directly against ZeroTier software without disclosing the source code
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* of your own application.
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*/
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/**
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* @file
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*
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* Platform- and stack-agnostic implementation of a socket-like object
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*/
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#ifndef LIBZT_VIRTUALSOCKET_H
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#define LIBZT_VIRTUALSOCKET_H
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#include <queue>
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#include "RingBuffer.h"
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#include "libztDefs.h"
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#include "VirtualTap.h"
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#include "Mutex.hpp"
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#define VS_STATE_INACTIVE 0x000000u // Default value for newly created VirtualSocket
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#define VS_STATE_ACTIVE 0x000001u // VirtualSocket is RX'ing or TX'ing without issue
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#define VS_STATE_SHOULD_SHUTDOWN 0x000002u // Application, stack driver, or stack marked this VirtualSocket for death
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#define VS_STATE_SHUTDOWN 0x000004u // VirtualSocket and underlying protocol control structures will not RX/TX
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#define VS_STATE_CLOSED 0x000008u // VirtualSocket and underlying protocol control structures are closed
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#define VS_STATE_UNHANDLED_CONNECTED 0x000010u // stack callback has received a connection but we haven't dealt with it
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#define VS_STATE_CONNECTED 0x000020u // stack driver has akwnowledged new connection
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#define VS_STATE_LISTENING 0x000040u // virtual socket is listening for incoming connections
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#define VS_OPT_TCP_NODELAY 0x000000u // Nagle's algorithm
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#define VS_OPT_SO_LINGER 0x000001u // VirtualSocket waits for data transmission before closure
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/*
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#define VS_RESERVED 0x000002u //
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#define VS_RESERVED 0x000004u //
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#define VS_RESERVED 0x000008u //
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#define VS_RESERVED 0x000010u //
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#define VS_RESERVED 0x000020u //
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#define VS_RESERVED 0x000040u //
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*/
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#define VS_OPT_FD_NONBLOCKING 0x000080u // Whether the VirtualSocket exhibits non-blocking behaviour
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/*
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#define VS_RESERVED 0x000100u //
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#define VS_RESERVED 0x000200u //
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#define VS_RESERVED 0x000400u //
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#define VS_RESERVED 0x000800u //
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#define VS_RESERVED 0x001000u //
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#define VS_RESERVED 0x002000u //
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#define VS_RESERVED 0x004000u //
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#define VS_RESERVED 0x008000u //
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#define VS_RESERVED 0x010000u //
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#define VS_RESERVED 0x020000u //
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#define VS_RESERVED 0x040000u //
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#define VS_RESERVED 0x080000u //
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#define VS_RESERVED 0x100000u //
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#define VS_RESERVED 0x200000u //
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#define VS_RESERVED 0x400000u //
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#define VS_RESERVED 0x800000u //
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*/
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#define vs_is_nonblocking(vs) (((vs)->optflags & VS_OPT_FD_NONBLOCKING) != 0)
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* An abstraction of a socket that operates between the application-exposed platform-sockets
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* and the network stack's representation of a protocol control structure. This object is used by
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* the POSIX socket emulation layer and stack drivers.
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*/
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class VirtualSocket
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{
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private:
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int _state = VS_STATE_INACTIVE;
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public:
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RingBuffer *TXbuf, *RXbuf;
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ZeroTier::Mutex _tx_m, _rx_m, _op_m;
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ZeroTier::PhySocket *sock = NULL;
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void *pcb = NULL; // Protocol Control Block
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#if defined(STACK_LWIP)
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int32_t optflags = 0;
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int linger;
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/*
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- TCP_WRITE_FLAG_COPY: indicates whether the new memory should be allocated
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for the data to be copied into. If this flag is not given, no new memory
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should be allocated and the data should only be referenced by pointer. This
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also means that the memory behind dataptr must not change until the data is
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ACKed by the remote host
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- TCP_WRITE_FLAG_MORE: indicates that more data follows. If this is omitted,
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the PSH flag is set in the last segment created by this call to tcp_write.
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If this flag is given, the PSH flag is not set.
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*/
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// copy as default, processed via pointer reference if set to 0. See notes in lwip_cb_sent() and lwip_Write()
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int8_t copymode = 1; // TCP_WRITE_FLAG_COPY;
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#endif
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struct sockaddr_storage local_addr; // address we've bound to locally
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struct sockaddr_storage peer_addr; // address of connection call to remote host
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int socket_family = 0;
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int socket_type = 0;
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int protocol = 0;
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int app_fd = 0; // used by app for I/O
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int sdk_fd = 0; // used by lib for I/O
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std::queue<VirtualSocket*> _AcceptedConnections;
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VirtualTap *tap = NULL;
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/**
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* Sets the VirtualSocket's state value
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*/
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void apply_state(int state);
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/**
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* Sets the VirtualSocket's state value
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*/
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void set_state(int state);
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/**
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* Gets the VirtualSocket's state value
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*/
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int get_state();
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/**
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* default ctor
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*/
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VirtualSocket();
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/**
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* dtor
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*/
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~VirtualSocket();
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};
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#ifdef __cplusplus
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}
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#endif
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#endif // _H
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