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java.lang.Objectnet.i2p.router.transport.ntcp.EstablishState
class EstablishState
Handle the 4-phase establishment, which is as follows:
Alice contacts Bob ========================================================= Message 1 (Session Request): X+(H(X) xor Bob.identHash)-----------------------------> Message 2 (Session Created): <----------------------------------------Y+E(H(X+Y)+tsB, sk, Y[239:255]) Message 3 (Session Confirm A): E(sz+Alice.identity+tsA+padding+S(X+Y+Bob.identHash+tsA+tsB), sk, hX_xor_Bob.identHash[16:31])---> Message 4 (Session Confirm B): <----------------------E(S(X+Y+Alice.identHash+tsA+tsB)+padding, sk, prev) Key: X, Y: 256 byte DH keys H(): 32 byte SHA256 Hash E(data, session key, IV): AES256 Encrypt S(): 40 byte DSA Signature tsA, tsB: timestamps (4 bytes, seconds since epoch) sk: 32 byte Session key sz: 2 byte size of Alice identity to followAlternately, when Bob receives a connection, it could be a check connection (perhaps prompted by Bob asking for someone to verify his listener). check connections are formatted per isCheckInfo() NOTE: Check info is unused.
Field Summary | |
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protected net.i2p.router.transport.ntcp.EstablishState.State |
_state
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static net.i2p.router.transport.ntcp.EstablishState.FailedEstablishState |
FAILED
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static net.i2p.router.transport.ntcp.EstablishState.VerifiedEstablishState |
VERIFIED
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Constructor Summary | |
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EstablishState(RouterContext ctx,
NTCPTransport transport,
NTCPConnection con)
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Method Summary | |
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void |
close(String reason,
Exception e)
Release resources on timeout. |
String |
getError()
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Exception |
getException()
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byte[] |
getExtraBytes()
if complete, this will contain any bytes received as part of the handshake that were after the actual handshake. |
boolean |
getFailedBySkew()
Was this connection failed because of clock skew? |
boolean |
isComplete()
If synchronized on this, fails with deadlocks from all over via CSFI.isEstablished(). |
boolean |
isCorrupt()
did the handshake fail for some reason? |
void |
prepareOutbound()
We are Alice. |
void |
receive(ByteBuffer src)
parse the contents of the buffer as part of the handshake. |
String |
toString()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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public static final net.i2p.router.transport.ntcp.EstablishState.VerifiedEstablishState VERIFIED
public static final net.i2p.router.transport.ntcp.EstablishState.FailedEstablishState FAILED
protected net.i2p.router.transport.ntcp.EstablishState.State _state
Constructor Detail |
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public EstablishState(RouterContext ctx, NTCPTransport transport, NTCPConnection con)
Method Detail |
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public void receive(ByteBuffer src)
public boolean getFailedBySkew()
public boolean isCorrupt()
public boolean isComplete()
public void prepareOutbound()
public byte[] getExtraBytes()
public void close(String reason, Exception e)
e
- may be nullpublic String getError()
public Exception getException()
public String toString()
toString
in class Object
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