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@@ -175,9 +175,9 @@ which reveals the downstream node.
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open a new connection to that router.
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open a new connection to that router.
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3. Choose an ACI not already in use on the connection with the
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3. Choose an ACI not already in use on the connection with the
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- first router in the chain. If our address/port pair is
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- numerically higher than the address/port pair of the other
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- side, then let the high bit of the ACI be 1, else 0.
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+ first router in the chain. If we are an onion router and our
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+ nickname is lexicographically greater than the nickname of the
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+ other side, then let the high bit of the ACI be 1, else 0.
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4. Send a CREATE cell along the connection, to be received by
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4. Send a CREATE cell along the connection, to be received by
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the first onion router.
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the first onion router.
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@@ -202,8 +202,9 @@ which reveals the downstream node.
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When an onion router receives an EXTEND relay cell, it sends a
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When an onion router receives an EXTEND relay cell, it sends a
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CREATE cell to the next onion router, with the enclosed onion skin
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CREATE cell to the next onion router, with the enclosed onion skin
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- as its payload. The initiating onion router chooses some random
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- ACI not yet used on the connection between the two onion routers.
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+ as its payload. The initiating onion router chooses some ACI not
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+ yet used on the connection between the two onion routers. (But see
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+ section 4.3. above, concerning choosing ACIs.)
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As an extension (called router twins), if the desired next onion
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As an extension (called router twins), if the desired next onion
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router R in the circuit is down, and some other onion router R'
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router R in the circuit is down, and some other onion router R'
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Roger Dingledine