codinget
915dca44fe
Each call to newIPN() starts an independent Go backend that calls safesocket.Listen() to serve the ipnserver IPC channel. Because memName was a global constant, the second instance would fail with "addr unavailable" and log.Fatal the whole WASM process. Use an atomic counter to give each listener a distinct name (Tailscale-IPN-1, Tailscale-IPN-2, …). The connect() path is unchanged: in the wasm/tsconnect build all LocalAPI calls go through the in-process httptest handler, so connect() is never called. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
29 lines
660 B
Go
29 lines
660 B
Go
// Copyright (c) Tailscale Inc & contributors
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// SPDX-License-Identifier: BSD-3-Clause
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package safesocket
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import (
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"context"
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"fmt"
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"net"
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"sync/atomic"
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"github.com/akutz/memconn"
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)
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const memName = "Tailscale-IPN"
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// memSeq ensures each IPN instance in the same WASM process gets a distinct
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// memconn address, so concurrent instances do not conflict on the registry.
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var memSeq atomic.Int64
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func listen(path string) (net.Listener, error) {
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name := fmt.Sprintf("%s-%d", memName, memSeq.Add(1))
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return memconn.Listen("memu", name)
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}
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func connect(ctx context.Context, _ string) (net.Conn, error) {
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return memconn.DialContext(ctx, "memu", memName)
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}
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