in src/connection/HttpConnection.ts [386:397]
function resolve (host: string, path: string): string {
const hostEndWithSlash = host[host.length - 1] === '/'
const pathStartsWithSlash = path[0] === '/'
if (hostEndWithSlash && pathStartsWithSlash) {
return host + path.slice(1)
} else if (hostEndWithSlash !== pathStartsWithSlash) {
return host + path
} else {
return host + '/' + path
}
}