blob: b05c099ff8287df8501c5fced6c4f7951f8d52f1 (
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'use strict';
const net = require('net');
/* istanbul ignore file: https://github.com/nodejs/node/blob/v13.0.1/lib/_http_agent.js */
module.exports = options => {
let servername = options.host;
const hostHeader = options.headers && options.headers.host;
if (hostHeader) {
if (hostHeader.startsWith('[')) {
const index = hostHeader.indexOf(']');
if (index === -1) {
servername = hostHeader;
} else {
servername = hostHeader.slice(1, -1);
}
} else {
servername = hostHeader.split(':', 1)[0];
}
}
if (net.isIP(servername)) {
return '';
}
return servername;
};
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