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+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.http;
+
+
+/**
+ * Callbacks in this interface are made as an HTTP request is
+ * processed. The normal order of callbacks is status(), headers(),
+ * then multiple data() then endData(). handleSslErrorRequest(), if
+ * there is an SSL certificate error. error() can occur anywhere
+ * in the transaction.
+ *
+ * {@hide}
+ */
+
+public interface EventHandler {
+
+ /**
+ * Error codes used in the error() callback. Positive error codes
+ * are reserved for codes sent by http servers. Negative error
+ * codes are connection/parsing failures, etc.
+ */
+
+ /** Success */
+ public static final int OK = 0;
+ /** Generic error */
+ public static final int ERROR = -1;
+ /** Server or proxy hostname lookup failed */
+ public static final int ERROR_LOOKUP = -2;
+ /** Unsupported authentication scheme (ie, not basic or digest) */
+ public static final int ERROR_UNSUPPORTED_AUTH_SCHEME = -3;
+ /** User authentication failed on server */
+ public static final int ERROR_AUTH = -4;
+ /** User authentication failed on proxy */
+ public static final int ERROR_PROXYAUTH = -5;
+ /** Could not connect to server */
+ public static final int ERROR_CONNECT = -6;
+ /** Failed to write to or read from server */
+ public static final int ERROR_IO = -7;
+ /** Connection timed out */
+ public static final int ERROR_TIMEOUT = -8;
+ /** Too many redirects */
+ public static final int ERROR_REDIRECT_LOOP = -9;
+ /** Unsupported URI scheme (ie, not http, https, etc) */
+ public static final int ERROR_UNSUPPORTED_SCHEME = -10;
+ /** Failed to perform SSL handshake */
+ public static final int ERROR_FAILED_SSL_HANDSHAKE = -11;
+ /** Bad URL */
+ public static final int ERROR_BAD_URL = -12;
+ /** Generic file error for file:/// loads */
+ public static final int FILE_ERROR = -13;
+ /** File not found error for file:/// loads */
+ public static final int FILE_NOT_FOUND_ERROR = -14;
+ /** Too many requests queued */
+ public static final int TOO_MANY_REQUESTS_ERROR = -15;
+
+ /**
+ * Called after status line has been sucessfully processed.
+ * @param major_version HTTP version advertised by server. major
+ * is the part before the "."
+ * @param minor_version HTTP version advertised by server. minor
+ * is the part after the "."
+ * @param code HTTP Status code. See RFC 2616.
+ * @param reason_phrase Textual explanation sent by server
+ */
+ public void status(int major_version,
+ int minor_version,
+ int code,
+ String reason_phrase);
+
+ /**
+ * Called after all headers are successfully processed.
+ */
+ public void headers(Headers headers);
+
+ /**
+ * An array containing all or part of the http body as read from
+ * the server.
+ * @param data A byte array containing the content
+ * @param len The length of valid content in data
+ *
+ * Note: chunked and compressed encodings are handled within
+ * android.net.http. Decoded data is passed through this
+ * interface.
+ */
+ public void data(byte[] data, int len);
+
+ /**
+ * Called when the document is completely read. No more data()
+ * callbacks will be made after this call
+ */
+ public void endData();
+
+ /**
+ * SSL certificate callback called before resource request is
+ * made, which will be null for insecure connection.
+ */
+ public void certificate(SslCertificate certificate);
+
+ /**
+ * There was trouble.
+ * @param id One of the error codes defined below
+ * @param description of error
+ */
+ public void error(int id, String description);
+
+ /**
+ * SSL certificate error callback. Handles SSL error(s) on the way
+ * up to the user. The callback has to make sure that restartConnection() is called,
+ * otherwise the connection will be suspended indefinitely.
+ * @return True if the callback can handle the error, which means it will
+ * call restartConnection() to unblock the thread later,
+ * otherwise return false.
+ */
+ public boolean handleSslErrorRequest(SslError error);
+
+}