(edited)
norio_nomura
import Foundation var hint = addrinfo(), addrinfo0: UnsafeMutablePointer<addrinfo>? = nil #if _runtime(_ObjC) hint.ai_socktype = SOCK_STREAM #else hint.ai_socktype = Int32(SOCK_STREAM.rawValue) #endif let error = getaddrinfo("whois.iana.org", "nicname", &hint, &addrinfo0) guard error == 0 else { print(String.init(cString: gai_strerror(error))) exit(error) } defer { freeaddrinfo(addrinfo0) } var addrinfoNext = addrinfo0?.pointee while let addrinfo = addrinfoNext { defer { addrinfoNext = addrinfo.ai_next?.pointee } let sock = socket(addrinfo.ai_family, addrinfo.ai_socktype, addrinfo.ai_protocol) guard sock != -1, connect(sock, addrinfo.ai_addr, addrinfo.ai_addrlen) == 0 else { print(String(cString: strerror(errno))) continue } let handle = FileHandle(fileDescriptor: sock, closeOnDealloc: true) handle.write("xcode.app\r\n".data(using: .utf8)!) FileHandle.standardOutput.write(handle.readDataToEndOfFile()) }
Version:
swift-4.1.1-RELEASE
Output:
Temporary failure in name resolution
Error: