/*
* Copyright (C) 2013 Square, Inc.
*
* 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 okhttp3.internal.http;
import java.io.
IOException;
import java.net.
ProtocolException;
import okhttp3.
Protocol;
import okhttp3.
Response;
/** An HTTP response status line like "HTTP/1.1 200 OK". */
public final class
StatusLine {
/** Numeric status code, 307: Temporary Redirect. */
public static final int
HTTP_TEMP_REDIRECT = 307;
public static final int
HTTP_PERM_REDIRECT = 308;
public static final int
HTTP_CONTINUE = 100;
public final
Protocol protocol;
public final int
code;
public final
String message;
public
StatusLine(
Protocol protocol, int
code,
String message) {
this.
protocol =
protocol;
this.
code =
code;
this.
message =
message;
}
public static
StatusLine get(
Response response) {
return new
StatusLine(
response.
protocol(),
response.
code(),
response.
message());
}
public static
StatusLine parse(
String statusLine) throws
IOException {
// H T T P / 1 . 1 2 0 0 T e m p o r a r y R e d i r e c t
// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
// Parse protocol like "HTTP/1.1" followed by a space.
int
codeStart;
Protocol protocol;
if (
statusLine.
startsWith("HTTP/1.")) {
if (
statusLine.
length() < 9 ||
statusLine.
charAt(8) != ' ') {
throw new
ProtocolException("Unexpected status line: " +
statusLine);
}
int
httpMinorVersion =
statusLine.
charAt(7) - '0';
codeStart = 9;
if (
httpMinorVersion == 0) {
protocol =
Protocol.
HTTP_1_0;
} else if (
httpMinorVersion == 1) {
protocol =
Protocol.
HTTP_1_1;
} else {
throw new
ProtocolException("Unexpected status line: " +
statusLine);
}
} else if (
statusLine.
startsWith("ICY ")) {
// Shoutcast uses ICY instead of "HTTP/1.0".
protocol =
Protocol.
HTTP_1_0;
codeStart = 4;
} else {
throw new
ProtocolException("Unexpected status line: " +
statusLine);
}
// Parse response code like "200". Always 3 digits.
if (
statusLine.
length() <
codeStart + 3) {
throw new
ProtocolException("Unexpected status line: " +
statusLine);
}
int
code;
try {
code =
Integer.
parseInt(
statusLine.
substring(
codeStart,
codeStart + 3));
} catch (
NumberFormatException e) {
throw new
ProtocolException("Unexpected status line: " +
statusLine);
}
// Parse an optional response message like "OK" or "Not Modified". If it
// exists, it is separated from the response code by a space.
String message = "";
if (
statusLine.
length() >
codeStart + 3) {
if (
statusLine.
charAt(
codeStart + 3) != ' ') {
throw new
ProtocolException("Unexpected status line: " +
statusLine);
}
message =
statusLine.
substring(
codeStart + 4);
}
return new
StatusLine(
protocol,
code,
message);
}
@
Override public
String toString() {
StringBuilder result = new
StringBuilder();
result.
append(
protocol ==
Protocol.
HTTP_1_0 ? "HTTP/1.0" : "HTTP/1.1");
result.
append(' ').
append(
code);
if (
message != null) {
result.
append(' ').
append(
message);
}
return
result.
toString();
}
}