Waiting for the first WWW request to finish before starting the next one.

I'm trying to upload my files in my server using a foreach loop.

Code (csharp):

1.  
2. foreach (string str_path in path_list)
3. {
4.       string file_path = str_path;
5.       StartCoroutine(UploadToServer(file_path));
6. }
7.  

I'm currently successful with uploading my files however, they are overlapping. I want to somehow wait for the first one to finish before moving on the next one on the list.

My upload to server code is this :

Code (csharp):

1.  
2.  
3. using (UnityWebRequest www = UnityWebRequest.Post(post_link, form))
4. {
5.       AsyncOperation request = www.SendWebRequest();
6.       while(!request.isDone)
7.       {
8.          Debug.Log(request.progress);
9.          yield return null;
10.       }
11.      
12.       Debug.Log("Success!");
13. }
14.  
15.  

 

okay so I changed my code to this

Code (csharp):

1.  
2. IEnumerator UploadMultipleFiles()
3. {
4. foreach (string str_path in path_list)
5. {
6.       string file_path = str_path;
7.       yield return UploadToServer(file_path);
8. }
9. }
10.  

Then called it as

Code (csharp):

1.  
2. StartCoroutine(UploadMultipleFiles());
3.  

but it's still overlapping?

 

I've searched the forums as well regarding this.

If I were to change my code to this,

Code (csharp):

1.  
2. using (UnityWebRequest www = UnityWebRequest.Post(post_link, form))
3. {
4.       yield return www.Send();
5.       while(!www.isDone)
6.      {
7.          Debug.Log(www.progress);
8.          yield return null;
9.       }    
10.  
11.      Debug.Log("Success!");
12. }
13.  

it should work, but it's still overlapping.

 

Sorry. Here it is:

Code (csharp):

1.  
2. public class MyScript : MonoBehaviour
3. {
4.          public void CallUpload(string file_path) // Called on button tap. File path is forwarded by plugin.
5.          {
6.                   StartCoroutine(UploadMultipleFiles(file_path));
7.          }
8.  
9.          IEnumerator UploadMultipleFiles(string file_path)
10.          {
11.                   foreach(string str in photoList)
12.                     {
13.                         // string img_path = "file://" + str;
14.                         string img_path = str;
15.                         yield return UserUploadFile(img_path);
16.                     }
17.         }
18.      
19.         IEnumerator UserUploadFile(string img_path)
20.         {
21.                 create_link = "https://www.somelink.com/upload"
22.                 WWWForm form = new WWWForm ();
23.                 form.AddBinaryData ("scene[image]", File.ReadAllBytes(img_path));
24.  
25.                 using (UnityWebRequest www = UnityWebRequest.Post(create_link, form))
26.                 {
27.                         yield return www.Send();
28.                         if (!string.IsNullOrEmpty(www.error))
29.                         {
30.                                   Debug.Log(www.error.ToString());
31.                         }
32.                         else
33.                         {
34.                                  Debug.Log("Success!");
35.                         }
36.                 }
37. }
38.  

 

the photoList is a List<string> where i saved all the paths of the selected images. also, the images are being uploaded properly, no repeating images.

 

UPDATE: It turns out www.Send(); isn't compatible with UnityWebRequest so I changed it to www.SendWebRequest().It's return value apparently isnt compatible with Coroutines. Thanks for all the help.