Example usage for io.netty.handler.codec.http HttpMessage headers

List of usage examples for io.netty.handler.codec.http HttpMessage headers

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Introduction

In this page you can find the example usage for io.netty.handler.codec.http HttpMessage headers.

Prototype

HttpHeaders headers();

Source Link

Document

Returns the headers of this message.

Usage

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * 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 io.netty.handler.codec.http.HttpVersion#isKeepAliveDefault()}.
 *//*w  ww .  java  2 s.c o m*/
public static boolean isKeepAlive(HttpMessage message) {
    String connection = message.headers().get(Names.CONNECTION);
    if (connection != null && AsciiString.equalsIgnoreCase(Values.CLOSE, connection)) {
        return false;
    }

    if (message.protocolVersion().isKeepAliveDefault()) {
        return !AsciiString.equalsIgnoreCase(Values.CLOSE, connection);
    } else {
        return AsciiString.equalsIgnoreCase(Values.KEEP_ALIVE, connection);
    }
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * 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 io.netty.handler.codec.http.HttpVersion#isKeepAliveDefault()}.
 * <ul>/*from   w w  w  .j a  v  a  2 s  .com*/
 * <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(HttpMessage message, boolean keepAlive) {
    HttpHeaders h = message.headers();
    if (message.protocolVersion().isKeepAliveDefault()) {
        if (keepAlive) {
            h.remove(Names.CONNECTION);
        } else {
            h.set(Names.CONNECTION, Values.CLOSE);
        }
    } else {
        if (keepAlive) {
            h.set(Names.CONNECTION, Values.KEEP_ALIVE);
        } else {
            h.remove(Names.CONNECTION);
        }
    }
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * Returns the length of the content.  Please note that this value is
 * not retrieved from {@link io.netty.handler.codec.http.HttpContent#content()} but from the
 * {@code "Content-Length"} header, and thus they are independent from each
 * other.//from   w w w  .  j a v a  2  s  .  c o  m
 *
 * @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(Names.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: " + Names.CONTENT_LENGTH);
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * Returns the length of the content.  Please note that this value is
 * not retrieved from {@link io.netty.handler.codec.http.HttpContent#content()} but from the
 * {@code "Content-Length"} header, and thus they are independent from each
 * other./*w  ww. j  av  a2  s. c  om*/
 *
 * @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
 */
public static long getContentLength(HttpMessage message, long defaultValue) {
    String contentLength = message.headers().get(Names.CONTENT_LENGTH);
    if (contentLength != null) {
        try {
            return Long.parseLong(contentLength);
        } catch (NumberFormatException ignored) {
            return defaultValue;
        }
    }

    // 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;
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * Returns the content length of the specified web socket message.  If the
 * specified message is not a web socket message, {@code -1} is returned.
 *//* w  w  w .ja v  a2  s.  c om*/
private static int getWebSocketContentLength(HttpMessage message) {
    // WebSockset 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(Names.SEC_WEBSOCKET_KEY1)
                && h.contains(Names.SEC_WEBSOCKET_KEY2)) {
            return 8;
        }
    } else if (message instanceof HttpResponse) {
        HttpResponse res = (HttpResponse) message;
        if (res.status().code() == 101 && h.contains(Names.SEC_WEBSOCKET_ORIGIN)
                && h.contains(Names.SEC_WEBSOCKET_LOCATION)) {
            return 16;
        }
    }

    // Not a web socket message
    return -1;
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * Sets the {@code "Content-Length"} header.
 *//*from  w  w  w.j  av  a2  s  .c o m*/
public static void setContentLength(HttpMessage message, long length) {
    message.headers().set(Names.CONTENT_LENGTH, length);
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

public static boolean isContentLengthSet(HttpMessage m) {
    return m.headers().contains(Names.CONTENT_LENGTH);
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * Returns {@code true} if and only if the specified message contains the
 * {@code "Expect: 100-continue"} header.
 *///from   w  ww.  j av a 2 s.com
public static boolean is100ContinueExpected(HttpMessage message) {
    // Expect: 100-continue is for requests only.
    if (!(message instanceof HttpRequest)) {
        return false;
    }

    // It works only on HTTP/1.1 or later.
    if (message.protocolVersion().compareTo(HttpVersion.HTTP_1_1) < 0) {
        return false;
    }

    // In most cases, there will be one or zero 'Expect' header.
    String value = message.headers().get(Names.EXPECT);
    if (value == null) {
        return false;
    }
    if (AsciiString.equalsIgnoreCase(Values.CONTINUE, value)) {
        return true;
    }

    // Multiple 'Expect' headers.  Search through them.
    return message.headers().contains(Names.EXPECT, Values.CONTINUE, true);
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * Sets or removes the {@code "Expect: 100-continue"} header to / from the
 * specified message.  If the specified {@code value} 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./*  www  . j av  a  2  s .  co  m*/
 */
public static void set100ContinueExpected(HttpMessage message, boolean expected) {
    if (expected) {
        message.headers().set(Names.EXPECT, Values.CONTINUE);
    } else {
        message.headers().remove(Names.EXPECT);
    }
}

From source file:cc.changic.platform.etl.schedule.http.HttpHeaderUtil.java

License:Apache License

/**
 * Checks to see if the transfer encoding in a specified {@link io.netty.handler.codec.http.HttpMessage} is chunked
 *
 * @param message The message to check/*from   w  w w. ja  v  a  2 s .co  m*/
 * @return True if transfer encoding is chunked, otherwise false
 */
public static boolean isTransferEncodingChunked(HttpMessage message) {
    return message.headers().contains(Names.TRANSFER_ENCODING, Values.CHUNKED, true);
}