Package com.netflix.zuul.util

Class HttpUtils

java.lang.Object

com.netflix.zuul.util.HttpUtils

public class HttpUtils
extends Object

User: Mike Smith Date: 4/28/15 Time: 11:05 PM

Constructor Summary

Constructors

Constructor	Description
HttpUtils()

Method Summary

Modifier and Type	Method	Description
static boolean	acceptsGzip(Headers headers)
static String	extractClientIpFromXForwardedFor(String xForwardedFor)	Extract the client IP address from an x-forwarded-for header.
static Integer	getBodySizeIfKnown(ZuulMessage msg)
static String	getClientIP(HttpRequestInfo request)	Get the IP address of client making the request.
static Integer	getContentLengthIfPresent(ZuulMessage msg)
static io.netty.channel.Channel	getMainChannel(io.netty.channel.Channel channel)
static io.netty.channel.Channel	getMainChannel(io.netty.channel.ChannelHandlerContext ctx)	If http/1 then will always want to just use ChannelHandlerContext.channel(), but for http/2 will want the parent channel (as the child channel is different for each h2 stream).
static boolean	hasChunkedTransferEncodingHeader(ZuulMessage msg)
static boolean	hasNonZeroContentLengthHeader(ZuulMessage msg)
static boolean	isCompressed(Headers headers)
static String	stripMaliciousHeaderChars(String input)	Ensure decoded new lines are not propagated in headers, in order to prevent XSS

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HttpUtils

public HttpUtils()

Method Details

getClientIP

public static String getClientIP(HttpRequestInfo request)

Get the IP address of client making the request. Uses the "x-forwarded-for" HTTP header if available, otherwise uses the remote IP of requester.

Parameters:

request - HttpRequestMessage

Returns:

String IP address

extractClientIpFromXForwardedFor

public static String extractClientIpFromXForwardedFor(String xForwardedFor)

Extract the client IP address from an x-forwarded-for header. Returns null if there is no x-forwarded-for header

Parameters:

xForwardedFor - a String value

Returns:

a String value

isCompressed

public static boolean isCompressed(Headers headers)

acceptsGzip

public static boolean acceptsGzip(Headers headers)

stripMaliciousHeaderChars

public static String stripMaliciousHeaderChars(@Nullable
 String input)

Ensure decoded new lines are not propagated in headers, in order to prevent XSS

Parameters:

input - - decoded header string

Returns:

- clean header string

hasNonZeroContentLengthHeader

public static boolean hasNonZeroContentLengthHeader(ZuulMessage msg)

getContentLengthIfPresent

public static Integer getContentLengthIfPresent(ZuulMessage msg)

getBodySizeIfKnown

public static Integer getBodySizeIfKnown(ZuulMessage msg)

hasChunkedTransferEncodingHeader

public static boolean hasChunkedTransferEncodingHeader(ZuulMessage msg)

getMainChannel

public static io.netty.channel.Channel getMainChannel(io.netty.channel.ChannelHandlerContext ctx)

If http/1 then will always want to just use ChannelHandlerContext.channel(), but for http/2 will want the parent channel (as the child channel is different for each h2 stream).

getMainChannel

public static io.netty.channel.Channel getMainChannel(io.netty.channel.Channel channel)