嘗試撥打Twitter流API時出現401錯誤

Question

我在我的智慧結尾處看到了這裏，我已經看到這裏所有的問題，雖然有人問我類似的問題，但我找不到任何答案的確切答案。

我一直試圖從一個C＃控制檯應用程序中調用https://stream.twitter.com/1.1/statuses/filter.json幾天，並繼續在401未經授權的錯誤，無論我做什麼都不會消失。適用於任何不流式傳輸的應用。

const string streamUrl = "https://stream.twitter.com/1.1/statuses/filter.json"; 
const string oauth_token = "XXX-XXXXX"; 
const string oauth_token_secret = "XXXXXXXXXXXX"; 
const string oauth_consumer_key = "XXXXXXXXXXXXX"; 
const string oauth_consumer_secret = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; 

// oauth implementation details 
const string oauth_version = "1.0a"; 
const string oauth_signature_method = "HMAC-SHA1"; 

// unique request details 
var oauth_nonce = Convert.ToBase64String(
    new ASCIIEncoding().GetBytes(DateTime.Now.Ticks.ToString())); 
var timeSpan = DateTime.UtcNow 
    - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc); 
var oauth_timestamp = Convert.ToInt64(timeSpan.TotalSeconds).ToString(); 

// create oauth signature 
const string baseFormat = "oauth_consumer_key={0}&oauth_nonce={1}&oauth_signature_method={2}" + 
    "&oauth_timestamp={3}&oauth_token={4}&oauth_version={5}&track=twitter"; 

var baseString = string.Format(baseFormat, 
    oauth_consumer_key, 
    oauth_nonce, 
    oauth_signature_method, 
    oauth_timestamp, 
    oauth_token, 
    oauth_version); 

string oauth_signature; 

var compositeKey = string.Concat(Uri.EscapeDataString(oauth_consumer_secret), 
    "&", Uri.EscapeDataString(oauth_token_secret)); 

using (var hasher = new HMACSHA1(Encoding.ASCII.GetBytes(compositeKey))) 
{ 
    oauth_signature = Convert.ToBase64String(hasher.ComputeHash(Encoding.ASCII.GetBytes(baseString))); 
} 

// create the request header 
const string headerFormat = "OAuth oauth_consumer_key=\"{0}\", oauth_nonce=\"{1}\", " + 
    "oauth_signature=\"{2}\", oauth_signature_method=\"{3}\", " + 
    "oauth_timestamp=\"{4}\", oauth_token=\"{5}\", " + 
    "oauth_version=\"{6}\""; 

var authHeader = string.Format(headerFormat, 
    Uri.EscapeDataString(oauth_consumer_key), 
    Uri.EscapeDataString(oauth_nonce), 
    Uri.EscapeDataString(oauth_signature), 
    Uri.EscapeDataString(oauth_signature_method), 
    Uri.EscapeDataString(oauth_timestamp), 
    Uri.EscapeDataString(oauth_token), 
    Uri.EscapeDataString(oauth_version)); 

const string postparameters = "track=twitter"; 

streamUrl = string.Format("{0}?{1}", streamUrl, postparameters); 

while (true) 
{ 
    var timeLineRequest = (HttpWebRequest)WebRequest.Create(streamUrl); 
    timeLineRequest.Headers.Add("Authorization", authHeader); 
    var encode = System.Text.Encoding.GetEncoding("utf-8"); 

    ServicePointManager.Expect100Continue = false; 

    if (postparameters.Length > 0) 
    { 
     timeLineRequest.Method = "POST"; 
     timeLineRequest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8"; 

     byte[] _twitterTrack = encode.GetBytes(postparameters); 

     timeLineRequest.ContentLength = _twitterTrack.Length; 
     Stream _twitterPost = timeLineRequest.GetRequestStream(); 
     _twitterPost.Write(_twitterTrack, 0, _twitterTrack.Length); 
     _twitterPost.Close(); 
    } 

    var webResponse = (HttpWebResponse)timeLineRequest.GetResponse(); 
    var responseStream = new StreamReader(webResponse.GetResponseStream(), encode); 

    while (true) 
    { 
     var jsonText = responseStream.ReadLine(); 

     //Success 
     int wait = 250; 

     //Write Status 
     var status = string.Empty; 
     var json = new DataContractJsonSerializer(status.GetType()); 
     byte[] byteArray = Encoding.UTF8.GetBytes(jsonText); 
     var stream = new MemoryStream(byteArray); 
     status = json.ReadObject(stream) as string; 
     Console.Beep(); 
     Console.WriteLine(status); 
    }    
} 

我真的很感激看看是否有其他人通過了這個障礙。我厭倦了這個詛咒。

Answer 1

在計算簽名之前，您沒有在您的baseString中包含HTTP方法或基本URL。這是從Twitter site採取：

創建簽名基本字符串

迄今收集到的三個值必須加入使一個單一的字符串，從中將產生的簽名。這被OAuth規範稱爲簽名基本字符串。

到HTTP方法，基本URL和參數串編碼爲一個字符串：

1. 轉換的HTTP方法爲大寫和設置輸出字符串等於這個值。

2. 將'&'字符附加到輸出字符串。

3. Percent對URL進行編碼並將其附加到輸出字符串。

4. 將'&'字符附加到輸出字符串。

5. 百分比編碼參數字符串並將其附加到輸出 字符串。