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46 lines
1.8 KiB
Java
46 lines
1.8 KiB
Java
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2017 ZeroTier, Inc. https://www.zerotier.com/
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*/
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package com.zerotier.sdk;
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import java.net.InetSocketAddress;
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public interface PathChecker {
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/**
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* Callback to check whether a path should be used for ZeroTier traffic
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*
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* This function must return true if the path should be used.
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*
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* If no path check function is specified, ZeroTier will still exclude paths
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* that overlap with ZeroTier-assigned and managed IP address blocks. But the
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* use of a path check function is recommended to ensure that recursion does
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* not occur in cases where addresses are assigned by the OS or managed by
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* an out of band mechanism like DHCP. The path check function should examine
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* all configured ZeroTier interfaces and check to ensure that the supplied
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* addresses will not result in ZeroTier traffic being sent over a ZeroTier
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* interface (recursion).
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*
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* Obviously this is not required in configurations where this can't happen,
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* such as network containers or embedded.
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*
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* @param ztAddress ZeroTier address or 0 for none/any
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* @param localAddress Local interface address
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* @param remoteAddress remote address
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*/
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boolean onPathCheck(long ztAddress, InetSocketAddress localAddress, InetSocketAddress remoteAddress);
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/**
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* Function to get physical addresses for ZeroTier peers
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*
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* If provided this function will be occasionally called to get physical
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* addresses that might be tried to reach a ZeroTier address.
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*
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* @param ztAddress ZeroTier address (least significant 40 bits)
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* @param ss_family desired address family or -1 for any
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* @return address and port of ztAddress or null
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*/
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InetSocketAddress onPathLookup(long ztAddress, int ss_family);
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}
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