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@aws-sdk/protocol-http

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github.com/aws/aws-sdk-js-v3/tree/main/packages/protocol-http

aws/aws-sdk-js-v3

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export function isValidHostname(hostname) { const hostPattern = /^[a-z0-9][a-z0-9\.\-]*[a-z0-9]$/; return hostPattern.test(hostname); }