Invalid host parameter (nil or ""). Should be a domain name or IP address string.

[ixiao]

- (instancetype)initWithDelegate:(id<RMQConnectionDelegate>)delegate {
    return [self initWithUri:@"amqps://admin:p@ssw0rd3344@b-99587d00d-df55-4400-8658-8a5c5c6e23ba.mq.us-east-1.amazonaws.com:5671/" delegate:delegate];
}

ViewController.m

    RMQConnection *conn = [[RMQConnection alloc] initWithDelegate:[RMQConnectionDelegateLogger new]];
    [conn start];

    id<RMQChannel> ch = [conn createChannel];

    RMQQueue *q = [ch queue:@"adduser" options:RMQQueueDeclareDurable];

    NSData *msgData = [msg dataUsingEncoding:NSUTF8StringEncoding];
    
    [ch.defaultExchange publish:msgData routingKey:q.name persistent:YES];
    
    NSLog(@"Sent %@", msg);
    [NSThread sleepForTimeInterval:2.0f];
    
    [conn close];

Get Error:

Received connection: <RMQConnection: 0x2839d05a0> failedToConnectWithError: Error Domain=GCDAsyncSocketErrorDomain Code=2 "Invalid host parameter (nil or ""). Should be a domain name or IP address string." UserInfo={NSLocalizedDescription=Invalid host parameter (nil or ""). Should be a domain name or IP address string.}

I found every internet question & answer, I don't know why, android is working...
thank u

[michaelklishin]

I will convert this issue to a GitHub discussion. Currently GitHub will automatically close and lock the issue even though your question will be transferred and responded to elsewhere. This is to let you know that we do not intend to ignore this but this is how the current GitHub conversion mechanism makes it seem for the users :(

[ixiao]

my answer : ios client can not recognize my serve name ssw0rd3344@b-99587d00d-df55-4400-8658-8a5c5c6e23ba.mq
thank you ~

[michaelklishin]

Your connection does not provide a hostname to connect to. Tutorial 1 uses initWithUri:delegate:, client integration tests use a bunch of other selectors.

I will delete initWithDelegate: from the tutorial copy since it does not contribute much compared to some other selectors.