User Error

[xiayy0328]

The ping method in the release environment is always wrong but in the debug environment it is fine
result=failed(Error Domain=NSPOSIXErrorDomain Code=57 "Socket is not connected")

[453jerry]

Hi, I've built with the Release configuration and tested pinging both IPv6 and IPv4 addresses. But didn't get this error.

My XCode version is 14.3.1.

let remoteAddr = IPAddr.create("13.107.21.200", addressFamily: .ipv4)
let pinger = try! Pinger.init(remoteAddr: remoteAddr)
pinger.ping { result in
    print(result)
}

\\ Ouput: 
\\ pong(NetDiagnosis.Pinger.Response(len: 64, from: 13.107.21.200, hopLimit: 116, sequence: 0, identifier: 15649, rtt: 0.033390045166015625))

let remoteAddr = IPAddr.create("2620:1ec:c11::200", addressFamily: .ipv6)
let pinger = try! Pinger.init(remoteAddr: remoteAddr)
pinger.ping { result in
    print(result)
}

\\ Output (IPv6 Env):
\\ pong(NetDiagnosis.Pinger.Response(len: 1024, from: 2620:1ec:c11::200, hopLimit: 51, sequence: 0, identifier: 26605, rtt: 0.059056997299194336))

\\ Output (IPv4 Env):
\\ failed(Error Domain=NSPOSIXErrorDomain Code=65 "No route to host")

So could you share more infomation such as target address , OS and net enviroment.

[xiayy0328]

I deleted the Pinger+Trace.swift file

This is my test code
NetDemo.zip

[453jerry]

Hi, this issue has been confirmed. The reason for this is incorrect use of assertion in IPAddr.create(_ addrss: String, addressFamily: AddressFamily) .

public static func create(_ addrss: String, addressFamily: AddressFamily) -> IPAddr {
        switch addressFamily {
        case .ipv4:
            var addr = in_addr()
            assert(inet_pton(AF_INET, addrss, &addr) == 1)
            return .ipv4(addr)
        case .ipv6:
            var addr = in6_addr()
            assert(inet_pton(AF_INET6, addrss, &addr) == 1)
            return .ipv6(addr)
        }
    }

In -O builds (the default for Xcode’s Release configuration), condition is not evaluated, and there are no effects.
https://developer.apple.com/documentation/swift/assert(_:_:file:line:)

[xiayy0328]

I tried it and it's OK. Thank you