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							package internet
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							func isTCPSocket(network string) bool {
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								switch network {
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								case "tcp", "tcp4", "tcp6":
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									return true
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								default:
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									return false
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								}
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							}
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							func isUDPSocket(network string) bool {
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								switch network {
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								case "udp", "udp4", "udp6":
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									return true
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								default:
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									return false
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								}
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							}
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