Upload video with Chunked media upload api but always return 401

[holmes99631048]

i have some difficulty which confused me for a long time.I was trapped in the first step --INIT. it always return 401. i know it means no authorization! But it has been authorized.i can even post a tweet and image.i think that signature may be wrong.and what is the meaning of this sentence :

Because the method uses multipart POST, OAuth is handled differently. POST or query string parameters are not used when calculating an OAuth signature basestring or signature. Only the oauth_* parameters are used.

thanks for everyone help me.i am looking forward to your reply

this is my code:

String parameter_string = "oauth_consumer_key=" + oauth_consumer_key + "&oauth_nonce=" + oauth_nonce + "&oauth_signature_method=" + oauth_signature_method + "&oauth_timestamp="
					+ oauth_timestamp + "&oauth_token=" + URLEncoder.encode(oauth_token, "UTF-8") + "&oauth_version=1.0&status=" + URLEncoder.encode(tweet, "UTF-8");

String signature_base_string = "POST&" + URLEncoder.encode(ysTwitter.getUpdateStatusUrl(), "UTF-8") + "&" + URLEncoder.encode(parameter_string, "UTF-8");

String oauth_signature = "";

oauth_signature = ysTwitter.computeSignature(signature_base_string, oauth_consumer_secret + "&" + URLEncoder.encode(oauth_token_secret, "UTF-8"));

String authorization_header_string = "OAuth oauth_consumer_key=\"" + oauth_consumer_key + "\",oauth_signature_method=\"HMAC-SHA1\",oauth_timestamp=\"" + oauth_timestamp
					+ "\",oauth_nonce=\"" + oauth_nonce + "\",oauth_version=\"1.0\",oauth_signature=\"" + URLEncoder.encode(oauth_signature, "UTF-8") + "\",oauth_token=\""
					+ URLEncoder.encode(oauth_token, "UTF-8") + "\"";
			

URL url = new URL(ysTwitter.getUpdateStatusUrl());
// HttpURLConnection connection = (HttpURLConnection)
// url.openConnection(proxy);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
connection.setRequestProperty("Authorization", authorization_header_string);
connection.setConnectTimeout(50000);
connection.setReadTimeout(30000);
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setUseCaches(false);

connection.connect();

[andypiper]

Can you provide an example code snippet? What language library are you using?

[holmes99631048]

thanks for your reply,i edit my quetion with the code.i’m using raw java class, HttpURLConnection without third party lib.

[andypiper]

I’ve never had to do this manually before, but based on the documentation, I don’t think you should be including the String signature_base_string value when you calculate oauth_signature (per the documentation you’ve quoted).

The way I’d usually debug something like this would be to compare what a library such as Twitter4J does in this case.