Motivation: According to the specification, the "Connection" header's syntax is: " The Connection header field's value has the following grammar: Connection = 1#connection-option connection-option = token Connection options are case-insensitive. " https://tools.ietf.org/html/rfc7230#section-6.1 This means that Connection's value can have at least one element or a comma separated list with elements When calculating whether the connection can remain open, HttpUtil.isKeepAlive(HttpMessage) should take this into account. Modifications: - Check for "close" and "keep-alive" in a comma separated list - Add unit test Result: HttpUtil.isKeepAlive(HttpMessage) works correctly when "Connection: Upgrade, close"
537 lines
22 KiB
Java
537 lines
22 KiB
Java
/*
|
|
* Copyright 2015 The Netty Project
|
|
*
|
|
* The Netty Project licenses this file to you 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 io.netty.handler.codec.http;
|
|
|
|
import java.net.InetSocketAddress;
|
|
import java.net.URI;
|
|
import java.nio.charset.Charset;
|
|
import java.nio.charset.UnsupportedCharsetException;
|
|
import java.util.ArrayList;
|
|
import java.util.Iterator;
|
|
import java.util.List;
|
|
|
|
import io.netty.util.AsciiString;
|
|
import io.netty.util.CharsetUtil;
|
|
import io.netty.util.NetUtil;
|
|
|
|
/**
|
|
* Utility methods useful in the HTTP context.
|
|
*/
|
|
public final class HttpUtil {
|
|
|
|
private static final AsciiString CHARSET_EQUALS = AsciiString.of(HttpHeaderValues.CHARSET + "=");
|
|
private static final AsciiString SEMICOLON = AsciiString.cached(";");
|
|
|
|
private HttpUtil() { }
|
|
|
|
/**
|
|
* Determine if a uri is in origin-form according to
|
|
* <a href="https://tools.ietf.org/html/rfc7230#section-5.3">rfc7230, 5.3</a>.
|
|
*/
|
|
public static boolean isOriginForm(URI uri) {
|
|
return uri.getScheme() == null && uri.getSchemeSpecificPart() == null &&
|
|
uri.getHost() == null && uri.getAuthority() == null;
|
|
}
|
|
|
|
/**
|
|
* Determine if a uri is in asterisk-form according to
|
|
* <a href="https://tools.ietf.org/html/rfc7230#section-5.3">rfc7230, 5.3</a>.
|
|
*/
|
|
public static boolean isAsteriskForm(URI uri) {
|
|
return "*".equals(uri.getPath()) &&
|
|
uri.getScheme() == null && uri.getSchemeSpecificPart() == null &&
|
|
uri.getHost() == null && uri.getAuthority() == null && uri.getQuery() == null &&
|
|
uri.getFragment() == null;
|
|
}
|
|
|
|
/**
|
|
* Returns {@code true} if and only if the connection can remain open and
|
|
* thus 'kept alive'. This methods respects the value of the.
|
|
*
|
|
* {@code "Connection"} header first and then the return value of
|
|
* {@link HttpVersion#isKeepAliveDefault()}.
|
|
*/
|
|
public static boolean isKeepAlive(HttpMessage message) {
|
|
return !message.headers().containsValue(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE, true) &&
|
|
(message.protocolVersion().isKeepAliveDefault() ||
|
|
message.headers().containsValue(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE, true));
|
|
}
|
|
|
|
/**
|
|
* Sets the value of the {@code "Connection"} header depending on the
|
|
* protocol version of the specified message. This getMethod sets or removes
|
|
* the {@code "Connection"} header depending on what the default keep alive
|
|
* mode of the message's protocol version is, as specified by
|
|
* {@link HttpVersion#isKeepAliveDefault()}.
|
|
* <ul>
|
|
* <li>If the connection is kept alive by default:
|
|
* <ul>
|
|
* <li>set to {@code "close"} if {@code keepAlive} is {@code false}.</li>
|
|
* <li>remove otherwise.</li>
|
|
* </ul></li>
|
|
* <li>If the connection is closed by default:
|
|
* <ul>
|
|
* <li>set to {@code "keep-alive"} if {@code keepAlive} is {@code true}.</li>
|
|
* <li>remove otherwise.</li>
|
|
* </ul></li>
|
|
* </ul>
|
|
* @see #setKeepAlive(HttpHeaders, HttpVersion, boolean)
|
|
*/
|
|
public static void setKeepAlive(HttpMessage message, boolean keepAlive) {
|
|
setKeepAlive(message.headers(), message.protocolVersion(), keepAlive);
|
|
}
|
|
|
|
/**
|
|
* Sets the value of the {@code "Connection"} header depending on the
|
|
* protocol version of the specified message. This getMethod sets or removes
|
|
* the {@code "Connection"} header depending on what the default keep alive
|
|
* mode of the message's protocol version is, as specified by
|
|
* {@link HttpVersion#isKeepAliveDefault()}.
|
|
* <ul>
|
|
* <li>If the connection is kept alive by default:
|
|
* <ul>
|
|
* <li>set to {@code "close"} if {@code keepAlive} is {@code false}.</li>
|
|
* <li>remove otherwise.</li>
|
|
* </ul></li>
|
|
* <li>If the connection is closed by default:
|
|
* <ul>
|
|
* <li>set to {@code "keep-alive"} if {@code keepAlive} is {@code true}.</li>
|
|
* <li>remove otherwise.</li>
|
|
* </ul></li>
|
|
* </ul>
|
|
*/
|
|
public static void setKeepAlive(HttpHeaders h, HttpVersion httpVersion, boolean keepAlive) {
|
|
if (httpVersion.isKeepAliveDefault()) {
|
|
if (keepAlive) {
|
|
h.remove(HttpHeaderNames.CONNECTION);
|
|
} else {
|
|
h.set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
|
|
}
|
|
} else {
|
|
if (keepAlive) {
|
|
h.set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
|
|
} else {
|
|
h.remove(HttpHeaderNames.CONNECTION);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the length of the content. Please note that this value is
|
|
* not retrieved from {@link HttpContent#content()} but from the
|
|
* {@code "Content-Length"} header, and thus they are independent from each
|
|
* other.
|
|
*
|
|
* @return the content length
|
|
*
|
|
* @throws NumberFormatException
|
|
* if the message does not have the {@code "Content-Length"} header
|
|
* or its value is not a number
|
|
*/
|
|
public static long getContentLength(HttpMessage message) {
|
|
String value = message.headers().get(HttpHeaderNames.CONTENT_LENGTH);
|
|
if (value != null) {
|
|
return Long.parseLong(value);
|
|
}
|
|
|
|
// We know the content length if it's a Web Socket message even if
|
|
// Content-Length header is missing.
|
|
long webSocketContentLength = getWebSocketContentLength(message);
|
|
if (webSocketContentLength >= 0) {
|
|
return webSocketContentLength;
|
|
}
|
|
|
|
// Otherwise we don't.
|
|
throw new NumberFormatException("header not found: " + HttpHeaderNames.CONTENT_LENGTH);
|
|
}
|
|
|
|
/**
|
|
* Returns the length of the content or the specified default value if the message does not have the {@code
|
|
* "Content-Length" header}. Please note that this value is not retrieved from {@link HttpContent#content()} but
|
|
* from the {@code "Content-Length"} header, and thus they are independent from each other.
|
|
*
|
|
* @param message the message
|
|
* @param defaultValue the default value
|
|
* @return the content length or the specified default value
|
|
* @throws NumberFormatException if the {@code "Content-Length"} header does not parse as a long
|
|
*/
|
|
public static long getContentLength(HttpMessage message, long defaultValue) {
|
|
String value = message.headers().get(HttpHeaderNames.CONTENT_LENGTH);
|
|
if (value != null) {
|
|
return Long.parseLong(value);
|
|
}
|
|
|
|
// We know the content length if it's a Web Socket message even if
|
|
// Content-Length header is missing.
|
|
long webSocketContentLength = getWebSocketContentLength(message);
|
|
if (webSocketContentLength >= 0) {
|
|
return webSocketContentLength;
|
|
}
|
|
|
|
// Otherwise we don't.
|
|
return defaultValue;
|
|
}
|
|
|
|
/**
|
|
* Get an {@code int} representation of {@link #getContentLength(HttpMessage, long)}.
|
|
*
|
|
* @return the content length or {@code defaultValue} if this message does
|
|
* not have the {@code "Content-Length"} header or its value is not
|
|
* a number. Not to exceed the boundaries of integer.
|
|
*/
|
|
public static int getContentLength(HttpMessage message, int defaultValue) {
|
|
return (int) Math.min(Integer.MAX_VALUE, getContentLength(message, (long) defaultValue));
|
|
}
|
|
|
|
/**
|
|
* Returns the content length of the specified web socket message. If the
|
|
* specified message is not a web socket message, {@code -1} is returned.
|
|
*/
|
|
private static int getWebSocketContentLength(HttpMessage message) {
|
|
// WebSocket messages have constant content-lengths.
|
|
HttpHeaders h = message.headers();
|
|
if (message instanceof HttpRequest) {
|
|
HttpRequest req = (HttpRequest) message;
|
|
if (HttpMethod.GET.equals(req.method()) &&
|
|
h.contains(HttpHeaderNames.SEC_WEBSOCKET_KEY1) &&
|
|
h.contains(HttpHeaderNames.SEC_WEBSOCKET_KEY2)) {
|
|
return 8;
|
|
}
|
|
} else if (message instanceof HttpResponse) {
|
|
HttpResponse res = (HttpResponse) message;
|
|
if (res.status().code() == 101 &&
|
|
h.contains(HttpHeaderNames.SEC_WEBSOCKET_ORIGIN) &&
|
|
h.contains(HttpHeaderNames.SEC_WEBSOCKET_LOCATION)) {
|
|
return 16;
|
|
}
|
|
}
|
|
|
|
// Not a web socket message
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Sets the {@code "Content-Length"} header.
|
|
*/
|
|
public static void setContentLength(HttpMessage message, long length) {
|
|
message.headers().set(HttpHeaderNames.CONTENT_LENGTH, length);
|
|
}
|
|
|
|
public static boolean isContentLengthSet(HttpMessage m) {
|
|
return m.headers().contains(HttpHeaderNames.CONTENT_LENGTH);
|
|
}
|
|
|
|
/**
|
|
* Returns {@code true} if and only if the specified message contains an expect header and the only expectation
|
|
* present is the 100-continue expectation. Note that this method returns {@code false} if the expect header is
|
|
* not valid for the message (e.g., the message is a response, or the version on the message is HTTP/1.0).
|
|
*
|
|
* @param message the message
|
|
* @return {@code true} if and only if the expectation 100-continue is present and it is the only expectation
|
|
* present
|
|
*/
|
|
public static boolean is100ContinueExpected(HttpMessage message) {
|
|
return isExpectHeaderValid(message)
|
|
// unquoted tokens in the expect header are case-insensitive, thus 100-continue is case insensitive
|
|
&& message.headers().contains(HttpHeaderNames.EXPECT, HttpHeaderValues.CONTINUE, true);
|
|
}
|
|
|
|
/**
|
|
* Returns {@code true} if the specified message contains an expect header specifying an expectation that is not
|
|
* supported. Note that this method returns {@code false} if the expect header is not valid for the message
|
|
* (e.g., the message is a response, or the version on the message is HTTP/1.0).
|
|
*
|
|
* @param message the message
|
|
* @return {@code true} if and only if an expectation is present that is not supported
|
|
*/
|
|
static boolean isUnsupportedExpectation(HttpMessage message) {
|
|
if (!isExpectHeaderValid(message)) {
|
|
return false;
|
|
}
|
|
|
|
final String expectValue = message.headers().get(HttpHeaderNames.EXPECT);
|
|
return expectValue != null && !HttpHeaderValues.CONTINUE.toString().equalsIgnoreCase(expectValue);
|
|
}
|
|
|
|
private static boolean isExpectHeaderValid(final HttpMessage message) {
|
|
/*
|
|
* Expect: 100-continue is for requests only and it works only on HTTP/1.1 or later. Note further that RFC 7231
|
|
* section 5.1.1 says "A server that receives a 100-continue expectation in an HTTP/1.0 request MUST ignore
|
|
* that expectation."
|
|
*/
|
|
return message instanceof HttpRequest &&
|
|
message.protocolVersion().compareTo(HttpVersion.HTTP_1_1) >= 0;
|
|
}
|
|
|
|
/**
|
|
* Sets or removes the {@code "Expect: 100-continue"} header to / from the
|
|
* specified message. If {@code expected} is {@code true},
|
|
* the {@code "Expect: 100-continue"} header is set and all other previous
|
|
* {@code "Expect"} headers are removed. Otherwise, all {@code "Expect"}
|
|
* headers are removed completely.
|
|
*/
|
|
public static void set100ContinueExpected(HttpMessage message, boolean expected) {
|
|
if (expected) {
|
|
message.headers().set(HttpHeaderNames.EXPECT, HttpHeaderValues.CONTINUE);
|
|
} else {
|
|
message.headers().remove(HttpHeaderNames.EXPECT);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks to see if the transfer encoding in a specified {@link HttpMessage} is chunked
|
|
*
|
|
* @param message The message to check
|
|
* @return True if transfer encoding is chunked, otherwise false
|
|
*/
|
|
public static boolean isTransferEncodingChunked(HttpMessage message) {
|
|
return message.headers().contains(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED, true);
|
|
}
|
|
|
|
/**
|
|
* Set the {@link HttpHeaderNames#TRANSFER_ENCODING} to either include {@link HttpHeaderValues#CHUNKED} if
|
|
* {@code chunked} is {@code true}, or remove {@link HttpHeaderValues#CHUNKED} if {@code chunked} is {@code false}.
|
|
*
|
|
* @param m The message which contains the headers to modify.
|
|
* @param chunked if {@code true} then include {@link HttpHeaderValues#CHUNKED} in the headers. otherwise remove
|
|
* {@link HttpHeaderValues#CHUNKED} from the headers.
|
|
*/
|
|
public static void setTransferEncodingChunked(HttpMessage m, boolean chunked) {
|
|
if (chunked) {
|
|
m.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED);
|
|
m.headers().remove(HttpHeaderNames.CONTENT_LENGTH);
|
|
} else {
|
|
List<String> encodings = m.headers().getAll(HttpHeaderNames.TRANSFER_ENCODING);
|
|
if (encodings.isEmpty()) {
|
|
return;
|
|
}
|
|
List<CharSequence> values = new ArrayList<CharSequence>(encodings);
|
|
Iterator<CharSequence> valuesIt = values.iterator();
|
|
while (valuesIt.hasNext()) {
|
|
CharSequence value = valuesIt.next();
|
|
if (HttpHeaderValues.CHUNKED.contentEqualsIgnoreCase(value)) {
|
|
valuesIt.remove();
|
|
}
|
|
}
|
|
if (values.isEmpty()) {
|
|
m.headers().remove(HttpHeaderNames.TRANSFER_ENCODING);
|
|
} else {
|
|
m.headers().set(HttpHeaderNames.TRANSFER_ENCODING, values);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch charset from message's Content-Type header.
|
|
*
|
|
* @param message entity to fetch Content-Type header from
|
|
* @return the charset from message's Content-Type header or {@link CharsetUtil#ISO_8859_1}
|
|
* if charset is not presented or unparsable
|
|
*/
|
|
public static Charset getCharset(HttpMessage message) {
|
|
return getCharset(message, CharsetUtil.ISO_8859_1);
|
|
}
|
|
|
|
/**
|
|
* Fetch charset from Content-Type header value.
|
|
*
|
|
* @param contentTypeValue Content-Type header value to parse
|
|
* @return the charset from message's Content-Type header or {@link CharsetUtil#ISO_8859_1}
|
|
* if charset is not presented or unparsable
|
|
*/
|
|
public static Charset getCharset(CharSequence contentTypeValue) {
|
|
if (contentTypeValue != null) {
|
|
return getCharset(contentTypeValue, CharsetUtil.ISO_8859_1);
|
|
} else {
|
|
return CharsetUtil.ISO_8859_1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch charset from message's Content-Type header.
|
|
*
|
|
* @param message entity to fetch Content-Type header from
|
|
* @param defaultCharset result to use in case of empty, incorrect or doesn't contain required part header value
|
|
* @return the charset from message's Content-Type header or {@code defaultCharset}
|
|
* if charset is not presented or unparsable
|
|
*/
|
|
public static Charset getCharset(HttpMessage message, Charset defaultCharset) {
|
|
CharSequence contentTypeValue = message.headers().get(HttpHeaderNames.CONTENT_TYPE);
|
|
if (contentTypeValue != null) {
|
|
return getCharset(contentTypeValue, defaultCharset);
|
|
} else {
|
|
return defaultCharset;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch charset from Content-Type header value.
|
|
*
|
|
* @param contentTypeValue Content-Type header value to parse
|
|
* @param defaultCharset result to use in case of empty, incorrect or doesn't contain required part header value
|
|
* @return the charset from message's Content-Type header or {@code defaultCharset}
|
|
* if charset is not presented or unparsable
|
|
*/
|
|
public static Charset getCharset(CharSequence contentTypeValue, Charset defaultCharset) {
|
|
if (contentTypeValue != null) {
|
|
CharSequence charsetCharSequence = getCharsetAsSequence(contentTypeValue);
|
|
if (charsetCharSequence != null) {
|
|
try {
|
|
return Charset.forName(charsetCharSequence.toString());
|
|
} catch (UnsupportedCharsetException ignored) {
|
|
return defaultCharset;
|
|
}
|
|
} else {
|
|
return defaultCharset;
|
|
}
|
|
} else {
|
|
return defaultCharset;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch charset from message's Content-Type header as a char sequence.
|
|
*
|
|
* A lot of sites/possibly clients have charset="CHARSET", for example charset="utf-8". Or "utf8" instead of "utf-8"
|
|
* This is not according to standard, but this method provide an ability to catch desired mistakes manually in code
|
|
*
|
|
* @param message entity to fetch Content-Type header from
|
|
* @return the {@code CharSequence} with charset from message's Content-Type header
|
|
* or {@code null} if charset is not presented
|
|
* @deprecated use {@link #getCharsetAsSequence(HttpMessage)}
|
|
*/
|
|
@Deprecated
|
|
public static CharSequence getCharsetAsString(HttpMessage message) {
|
|
return getCharsetAsSequence(message);
|
|
}
|
|
|
|
/**
|
|
* Fetch charset from message's Content-Type header as a char sequence.
|
|
*
|
|
* A lot of sites/possibly clients have charset="CHARSET", for example charset="utf-8". Or "utf8" instead of "utf-8"
|
|
* This is not according to standard, but this method provide an ability to catch desired mistakes manually in code
|
|
*
|
|
* @return the {@code CharSequence} with charset from message's Content-Type header
|
|
* or {@code null} if charset is not presented
|
|
*/
|
|
public static CharSequence getCharsetAsSequence(HttpMessage message) {
|
|
CharSequence contentTypeValue = message.headers().get(HttpHeaderNames.CONTENT_TYPE);
|
|
if (contentTypeValue != null) {
|
|
return getCharsetAsSequence(contentTypeValue);
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch charset from Content-Type header value as a char sequence.
|
|
*
|
|
* A lot of sites/possibly clients have charset="CHARSET", for example charset="utf-8". Or "utf8" instead of "utf-8"
|
|
* This is not according to standard, but this method provide an ability to catch desired mistakes manually in code
|
|
*
|
|
* @param contentTypeValue Content-Type header value to parse
|
|
* @return the {@code CharSequence} with charset from message's Content-Type header
|
|
* or {@code null} if charset is not presented
|
|
* @throws NullPointerException in case if {@code contentTypeValue == null}
|
|
*/
|
|
public static CharSequence getCharsetAsSequence(CharSequence contentTypeValue) {
|
|
if (contentTypeValue == null) {
|
|
throw new NullPointerException("contentTypeValue");
|
|
}
|
|
|
|
int indexOfCharset = AsciiString.indexOfIgnoreCaseAscii(contentTypeValue, CHARSET_EQUALS, 0);
|
|
if (indexOfCharset == AsciiString.INDEX_NOT_FOUND) {
|
|
return null;
|
|
}
|
|
|
|
int indexOfEncoding = indexOfCharset + CHARSET_EQUALS.length();
|
|
if (indexOfEncoding < contentTypeValue.length()) {
|
|
CharSequence charsetCandidate = contentTypeValue.subSequence(indexOfEncoding, contentTypeValue.length());
|
|
int indexOfSemicolon = AsciiString.indexOfIgnoreCaseAscii(charsetCandidate, SEMICOLON, 0);
|
|
if (indexOfSemicolon == AsciiString.INDEX_NOT_FOUND) {
|
|
return charsetCandidate;
|
|
}
|
|
|
|
return charsetCandidate.subSequence(0, indexOfSemicolon);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Fetch MIME type part from message's Content-Type header as a char sequence.
|
|
*
|
|
* @param message entity to fetch Content-Type header from
|
|
* @return the MIME type as a {@code CharSequence} from message's Content-Type header
|
|
* or {@code null} if content-type header or MIME type part of this header are not presented
|
|
* <p/>
|
|
* "content-type: text/html; charset=utf-8" - "text/html" will be returned <br/>
|
|
* "content-type: text/html" - "text/html" will be returned <br/>
|
|
* "content-type: " or no header - {@code null} we be returned
|
|
*/
|
|
public static CharSequence getMimeType(HttpMessage message) {
|
|
CharSequence contentTypeValue = message.headers().get(HttpHeaderNames.CONTENT_TYPE);
|
|
if (contentTypeValue != null) {
|
|
return getMimeType(contentTypeValue);
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch MIME type part from Content-Type header value as a char sequence.
|
|
*
|
|
* @param contentTypeValue Content-Type header value to parse
|
|
* @return the MIME type as a {@code CharSequence} from message's Content-Type header
|
|
* or {@code null} if content-type header or MIME type part of this header are not presented
|
|
* <p/>
|
|
* "content-type: text/html; charset=utf-8" - "text/html" will be returned <br/>
|
|
* "content-type: text/html" - "text/html" will be returned <br/>
|
|
* "content-type: empty header - {@code null} we be returned
|
|
* @throws NullPointerException in case if {@code contentTypeValue == null}
|
|
*/
|
|
public static CharSequence getMimeType(CharSequence contentTypeValue) {
|
|
if (contentTypeValue == null) {
|
|
throw new NullPointerException("contentTypeValue");
|
|
}
|
|
|
|
int indexOfSemicolon = AsciiString.indexOfIgnoreCaseAscii(contentTypeValue, SEMICOLON, 0);
|
|
if (indexOfSemicolon != AsciiString.INDEX_NOT_FOUND) {
|
|
return contentTypeValue.subSequence(0, indexOfSemicolon);
|
|
} else {
|
|
return contentTypeValue.length() > 0 ? contentTypeValue : null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Formats the host string of an address so it can be used for computing an HTTP component
|
|
* such as an URL or a Host header
|
|
*
|
|
* @param addr the address
|
|
* @return the formatted String
|
|
*/
|
|
public static String formatHostnameForHttp(InetSocketAddress addr) {
|
|
String hostString = NetUtil.getHostname(addr);
|
|
if (NetUtil.isValidIpV6Address(hostString)) {
|
|
if (!addr.isUnresolved()) {
|
|
hostString = NetUtil.toAddressString(addr.getAddress());
|
|
}
|
|
return '[' + hostString + ']';
|
|
}
|
|
return hostString;
|
|
}
|
|
}
|