iOSでSwiftからwebviewに値を渡す

iOSガワネイティブでSwiftから値を受け取る

上記の記事を参考に実装したのだが、webview側で値が取れない・・・
いろいろ調べたら、戻すときのheaderに

• Access-Control-Allow-Origin
• Access-Control-Allow-Headers

が必要だったようです。(多分)

sample.swift

    private func sendBackPlainText(str: String, status_code:Int) {
        
        if let data: NSData = str.dataUsingEncoding(NSUTF8StringEncoding) {
            let headers = [
                "Content-Type": "text/plain",
                "Content-Length": "\(data.length)",
                "Content-Encoding": "UTF-8",
                "Access-Control-Allow-Origin" : "*", //ここ
                "Access-Control-Allow-Headers" : "*" //ここ
            ]
            
            let response = NSHTTPURLResponse(URL: self.request.URL!,
                statusCode: status_code,
                HTTPVersion: "1.1",
                headerFields: headers)
            self.client?.URLProtocol(self,
                didReceiveResponse: response!,
                cacheStoragePolicy: NSURLCacheStoragePolicy.AllowedInMemoryOnly)
            self.client?.URLProtocol(self, didLoadData: data)
            self.client?.URLProtocolDidFinishLoading(self)
        }
    }