cmd/bootnode, p2p: use an alternate mapped port #26359
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Sorry for the wait, I'm on leave until next year. |
* temp * rede * remove meaningless field * temp comment * set refresh time to param * server: use channel enr.Entry * server: rename `changedport` to `changeport` * server: apply new nat-refresh `ethereum discovery` * p2p/nat: add some comment * p2p/nat: use `DefaultMapTimeout` * p2p: fixed * p2p/server: impr * p2p/server: syntax change * cmd/bootnode: add comments * add p2p.Server changeport * all: fix comments * p2p/server: syntax changes * cmd/bootnode: do not change UDPAddr Port * p2p: remove incorrect `for` context * p2p: add what needs to be addressed * p2p/nat: use AddPortMapping if supported * asynchronous port set * remove unused variables * change return format in `changePort` * cmd/bootnode: consistent log * p2p/server: rename `refreshLogger` to `newLogger` * cmd/bootnode: fix incorrect if-else * fix * change log orders * rename `natRefresh` to `natMapLoop` * p2p: remove `changeport` in Server main loop * server: remove duplicate code * typo * typo * cmd/bootnode: consistent log message * p2p: fix comments test code about port change on localnode cmd/bootnode: add log improve test logic , add some comments p2p/nat: add comments about not supported p2p: remove unnecessary conversion in test fix test failure, not setting TCP on localnode remove note checks mapped port first
Better to do it like this because the external IP needs to be polled as well.
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This should be ready now! |
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It looks really good! I made a small change. |
dbadoy
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Jul 12, 2023
lightclient
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Jul 12, 2023
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This changes the port mapping procedure such that, when the requested port is unavailable an alternative port suggested by the router is used instead. We now also repeatedly request the external IP from the router in order to catch any IP changes. Co-authored-by: Felix Lange <[email protected]>
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This was referenced Feb 1, 2024
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NAT-PMP maps an alternate port if the requested port is already in use and returns success. The current implementation define by 'failure' if the request port and the actual mapped port are different. Therefore it simply kept logging the message that 'Couldn't add port mapping' until the port was available again if the previously requested port was already used.
The goal of this PR is to have normal operation using an alternative port number even if the originally intended port is unavailable on NAT.
started from #26321 (comment), dbadoy#1