CODEWITHSUNDEEP
iosswift
Number1
Number1

Reputation: 391

Swift - Missing argument for parameter 'host' in call

Here's my code:

func submitLacunaRequest (#module: String, method: String, parameters: AnyObject, completion: (responseObject: AnyObject!, error: NSError!) -> (Void)) -> NSURLSessionTask? {
        let session = NSURLSession.sharedSession()
        let url = NSURL(string: "https://us1.lacunaexpanse.com").URLByAppendingPathComponent(module)
        let request = NSMutableURLRequest(URL: url)
        request.HTTPMethod = "POST"
        request.setValue("application/json-rpc", forHTTPHeaderField: "Content-Type")

Missing argument for parameter "host" in call. It happens at this line.

 let url = NSURL(string: "https://us1.lacunaexpanse.com").URLByAppendingPathComponent(module)

Any ideas how to solve this please?

Thanks!

Upvotes: 2

Views: 1118

Answers (1)

Christian
Christian

Reputation: 22343

That eror is missleading. The problem isn't a missing parameter, but how you access the NSURL. You either have to add an ? to access the optional, because the NSURL can be null, or you unwrap it:

//First option:
let url = NSURL(string: "https://us1.lacunaexpanse.com")?.URLByAppendingPathComponent(module)

//Unwrapping
if let url = NSURL(string: "https://us1.lacunaexpanse.com")?.URLByAppendingPathComponent(module){
    let request = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
    request.setValue("application/json-rpc", forHTTPHeaderField: "Content-Type")
}

Upvotes: 2

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