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Fix EINVAL when connecting LE L2CAP client sockets #64

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Merged
colemancda merged 1 commit into from
Oct 28, 2026
Merged

Fix EINVAL when connecting LE L2CAP client sockets #64

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4 changes: 3 additions & 1 deletion Sources/BluetoothLinux/L2CAP/L2CAPSocket.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -117,7 +117,9 @@ public struct L2CAPSocket: Sendable {
let destinationSocketAddress = L2CAPSocketAddress(
address: destinationAddress,
addressType: AddressType(lowEnergy: destinationAddressType),
protocolServiceMultiplexer: .att,
// LE ATT connects over the fixed channel with no PSM;
// the kernel rejects an address with both l2_psm and l2_cid set (EINVAL)
protocolServiceMultiplexer: nil,
channel: .att
)
let fileDescriptor = try SocketDescriptor.l2cap(localSocketAddress, [.closeOnExec, .nonBlocking])
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