Timberjack overwrites custom header fields and user agent

[leogiertz]

We set custom header fields on the default session configuration which Timberjack removes

To reproduce create a manager in the following way:

class HTTPManager: Manager {
    static let sharedManager: HTTPManager = {
        let configuration = Timberjack.defaultSessionConfiguration()
        let version = NSBundle.mainBundle().infoDictionary!["CFBundleVersion"] as! String
        let release = NSBundle.mainBundle().infoDictionary!["CFBundleShortVersionString"] as! String

        let device = UIDevice.currentDevice()

        configuration.HTTPAdditionalHeaders = [
            "User-Agent": "AppName iOS \(release)/\(version); \(device.systemName) \(device.systemVersion))",
            "X-Device-Id": "Some generated ID"
        ]

        let manager = HTTPManager(configuration: configuration)
        return manager
    }()
}

The received request looks like this:

POST /v1/event HTTP/1.1
Host: localhost:3000
Content-Type: application/x-www-form-urlencoded; charset=utf-8
Connection: keep-alive
Accept: */*
User-Agent: AppName/54 CFNetwork/711.4.6 Darwin/15.4.0
Content-Length: 81
Accept-Language: en-us
Accept-Encoding: gzip, deflate

The expected header should look like this:

POST /v1/event HTTP/1.1
Host: localhost:3000
Content-Type: application/x-www-form-urlencoded; charset=utf-8
Connection: keep-alive
X-Device-Id: Some generated ID
Accept: */*
User-Agent: AppName iOS 0.6.0/54; iPhone OS 8.4)
Content-Length: 81
Accept-Language: en-us
Accept-Encoding: gzip, deflate

[leogiertz]

We're using Timberjack with the lastest Alamofire (3.3.1)

[perezpaya]

+1 After adding a custom header, with Timberjack it gets removed.