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84 lines
2.7 KiB
Java
84 lines
2.7 KiB
Java
/*
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* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.net.httpserver;
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import java.io.*;
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import java.net.*;
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import com.sun.net.httpserver.*;
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import com.sun.net.httpserver.spi.*;
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/**
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* a class which allows the caller to read up to a defined
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* number of bytes off an underlying stream
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* close() does not close the underlying stream
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*/
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class FixedLengthInputStream extends LeftOverInputStream {
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private long remaining;
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FixedLengthInputStream (ExchangeImpl t, InputStream src, long len) {
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super (t, src);
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this.remaining = len;
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}
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protected int readImpl (byte[]b, int off, int len) throws IOException {
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eof = (remaining == 0L);
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if (eof) {
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return -1;
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}
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if (len > remaining) {
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len = (int)remaining;
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}
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int n = in.read(b, off, len);
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if (n > -1) {
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remaining -= n;
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if (remaining == 0) {
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t.getServerImpl().requestCompleted (t.getConnection());
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}
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}
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if (n < 0 && !eof)
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throw new IOException("connection closed before all data received");
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return n;
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}
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public int available () throws IOException {
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if (eof) {
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return 0;
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}
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int n = in.available();
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return n < remaining? n: (int)remaining;
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}
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public boolean markSupported () {return false;}
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public void mark (int l) {
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}
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public void reset () throws IOException {
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throw new IOException ("mark/reset not supported");
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}
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}
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