Add open/read http exception classes.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121871799

extensions/okhttp/src/main/java/com/google/android/exoplayer/ext/okhttp/OkHttpDataSource.java

@@ -161,7 +161,7 @@ public class OkHttpDataSource implements HttpDataSource {
       responseByteStream = response.body().byteStream();
     } catch (IOException e) {
       throw new HttpDataSourceException("Unable to connect to " + dataSpec.uri.toString(), e,
-          dataSpec);
+          dataSpec, HttpDataSourceException.TYPE_OPEN);
     }
 
     int responseCode = response.code();
@@ -206,7 +206,7 @@ public class OkHttpDataSource implements HttpDataSource {
       skipInternal();
       return readInternal(buffer, offset, readLength);
     } catch (IOException e) {
-      throw new HttpDataSourceException(e, dataSpec);
+      throw new HttpDataSourceException(e, dataSpec, HttpDataSourceException.TYPE_READ);
     }
   }
 

library/src/main/java/com/google/android/exoplayer/upstream/DefaultHttpDataSource.java

@@ -192,7 +192,7 @@ public class DefaultHttpDataSource implements HttpDataSource {
       connection = makeConnection(dataSpec);
     } catch (IOException e) {
       throw new HttpDataSourceException("Unable to connect to " + dataSpec.uri.toString(), e,
-          dataSpec);
+          dataSpec, HttpDataSourceException.TYPE_OPEN);
     }
 
     int responseCode;
@@ -201,7 +201,7 @@ public class DefaultHttpDataSource implements HttpDataSource {
     } catch (IOException e) {
       closeConnectionQuietly();
       throw new HttpDataSourceException("Unable to connect to " + dataSpec.uri.toString(), e,
-          dataSpec);
+          dataSpec, HttpDataSourceException.TYPE_OPEN);
     }
 
     // Check for a valid response code.
@@ -241,7 +241,7 @@ public class DefaultHttpDataSource implements HttpDataSource {
       inputStream = connection.getInputStream();
     } catch (IOException e) {
       closeConnectionQuietly();
-      throw new HttpDataSourceException(e, dataSpec);
+      throw new HttpDataSourceException(e, dataSpec, HttpDataSourceException.TYPE_OPEN);
     }
 
     opened = true;
@@ -258,7 +258,7 @@ public class DefaultHttpDataSource implements HttpDataSource {
       skipInternal();
       return readInternal(buffer, offset, readLength);
     } catch (IOException e) {
-      throw new HttpDataSourceException(e, dataSpec);
+      throw new HttpDataSourceException(e, dataSpec, HttpDataSourceException.TYPE_READ);
     }
   }
 
@@ -270,7 +270,7 @@ public class DefaultHttpDataSource implements HttpDataSource {
         try {
           inputStream.close();
         } catch (IOException e) {
-          throw new HttpDataSourceException(e, dataSpec);
+          throw new HttpDataSourceException(e, dataSpec, HttpDataSourceException.TYPE_CLOSE);
         }
       }
     } finally {

library/src/main/java/com/google/android/exoplayer/upstream/HttpDataSource.java

@@ -49,29 +49,39 @@ public interface HttpDataSource extends DataSource {
    */
   class HttpDataSourceException extends IOException {
 
-    /*
+    public static final int TYPE_OPEN = 1;
+    public static final int TYPE_READ = 2;
+    public static final int TYPE_CLOSE = 3;
+
+    public final int type;
+
+    /**
      * The {@link DataSpec} associated with the current connection.
      */
     public final DataSpec dataSpec;
 
-    public HttpDataSourceException(DataSpec dataSpec) {
+    public HttpDataSourceException(DataSpec dataSpec, int type) {
       super();
       this.dataSpec = dataSpec;
+      this.type = type;
     }
 
-    public HttpDataSourceException(String message, DataSpec dataSpec) {
+    public HttpDataSourceException(String message, DataSpec dataSpec, int type) {
       super(message);
       this.dataSpec = dataSpec;
+      this.type = type;
     }
 
-    public HttpDataSourceException(IOException cause, DataSpec dataSpec) {
+    public HttpDataSourceException(IOException cause, DataSpec dataSpec, int type) {
       super(cause);
       this.dataSpec = dataSpec;
+      this.type = type;
     }
 
-    public HttpDataSourceException(String message, IOException cause, DataSpec dataSpec) {
+    public HttpDataSourceException(String message, IOException cause, DataSpec dataSpec, int type) {
       super(message, cause);
       this.dataSpec = dataSpec;
+      this.type = type;
     }
 
   }
@@ -84,7 +94,7 @@ public interface HttpDataSource extends DataSource {
     public final String contentType;
 
     public InvalidContentTypeException(String contentType, DataSpec dataSpec) {
-      super("Invalid content type: " + contentType, dataSpec);
+      super("Invalid content type: " + contentType, dataSpec, TYPE_OPEN);
       this.contentType = contentType;
     }
 
@@ -107,7 +117,7 @@ public interface HttpDataSource extends DataSource {
 
     public InvalidResponseCodeException(int responseCode, Map<String, List<String>> headerFields,
         DataSpec dataSpec) {
-      super("Response code: " + responseCode, dataSpec);
+      super("Response code: " + responseCode, dataSpec, TYPE_OPEN);
       this.responseCode = responseCode;
       this.headerFields = headerFields;
     }