InvalidOperationException：無法覆蓋系統指定的標題

我想通過Unity製作多人遊戲。我用樣品的資產去嘗試，我得到一個錯誤，這是在下面：InvalidOperationException：無法覆蓋系統指定的標題

InvalidOperationException: Cannot override system-specified headers 
UnityEngine.Networking.UnityWebRequest.SetRequestHeader (System.String name, System.String value) (at C:/buildslave/unity/build/artifacts/generated/common/modules/UnityWebRequest/WebRequestBindings.gen.cs:482) 
UnityEngine.WWW..ctor (System.String url, System.Byte[] postData, System.Collections.Generic.Dictionary`2 headers) (at C:/buildslave/unity/build/Runtime/WebRequestWWW/UWRWWW.cs:62) 
QuizMaker.Administrator.AdminAPI+<api_call>c__Iterator0`1[QuizMaker.Administrator.CheckConnectionResponse].MoveNext() (at Assets/QuizMaker/Scripts/Administrator/AdminAPI.cs:77) 
UnityEngine.SetupCoroutine.InvokeMoveNext (IEnumerator enumerator, IntPtr returnValueAddress) (at C:/buildslave/unity/build/Runtime/Export/Coroutines.cs:17) 
UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator) 
QuizMaker.Administrator.AdminAPI:CheckConnection(Callback`1) (at Assets/QuizMaker/Scripts/Administrator/AdminAPI.cs:227) 
QuizMaker.Administrator.ServerSettingsUI:_updateServerStatus() (at Assets/QuizMaker/Scripts/Administrator/Actions/ServerSettingsUI.cs:147) 
QuizMaker.Administrator.ServerSettingsUI:UpdateServerStatus() (at Assets/QuizMaker/Scripts/Administrator/Actions/ServerSettingsUI.cs:139) 
QuizMaker.Administrator.ServerSettingsUI:Start() (at Assets/QuizMaker/Scripts/Administrator/Actions/ServerSettingsUI.cs:44)

我的代碼：

// create a form for a post data 
       WWWForm form = new WWWForm(); 

       // create a log string 
       var logString = string.Format("[API_REQ {0}]", action); 

       // add key val if data is empty 
       if (data.Length == 0) 
       { 
        data = new string[] { "key", "val" }; 
       } 

       // add data from an data array to the form 
       for (int i = 0; i < data.Length - 1; i += 2) 
       { 
        // add key and value 
        form.AddField(data[i], data[i + 1]); 

        // add log 
        logString += string.Format(" [{0}: {1}]", data[i], data[i + 1]); 
       } 

       // it needs to be more secure 
       var date = DateTime.Now.ToString(); 
       var headers = form.headers; 
       headers["Date"] = date; 
       headers["Order"] = Util.generateOrderString(data); 
       form.AddField("hash", Util.generateHash(data, date)); 

       // print log string 
       print(logString); 

       // create www request 
       var www = new WWW(AppConfig.Instance.serverUrl + action, form.data, headers); 

       // wait for a response 
       yield return www; 

       // print log for each api call 
       print(string.Format("[API_RES {0}] [{1}]", action, www.text)); 

       // parse a response 
       parseResponse(
        string.IsNullOrEmpty(www.error), 
        www.text, 
        callback 
        );

當我刪除日期變量，但是錯誤修復了這個時候，我無法連接到服務器。我的連接方法是REST API。提前致謝。

來源

2017-10-13 Aykut Uludağ

https://stackoverflow.com/questions/40032082/http-date-header-is-missing-in-unitywebrequest – hellyale

我發現了錯誤。如果有人遇到同樣的問題，只是改變了以下變量：

headers["Date"] = date;

到

headers["date"] = date;

這個固定我的問題，並救了我的時間。最好的祝福。

來源

2017-10-13 18:43:17

感謝隊友，你剛剛救了我很多時間，同時修復了我從統一購買的測驗模板：） – Chelseawillrecover

InvalidOperationException：無法覆蓋系統指定的標題

回答

相關問題