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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2010-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file 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 com.amazonaws;

import org.apache.http.annotation.NotThreadSafe;

import com.amazonaws.retry.PredefinedRetryPolicies;
import com.amazonaws.retry.RetryPolicy;
import com.amazonaws.http.IdleConnectionReaper;
import com.amazonaws.util.VersionInfoUtils;
/**
 * Client configuration options such as proxy settings, user agent string, max
 * retry attempts, etc.
 */
@NotThreadSafe
public class ClientConfiguration {

    /** The default timeout for creating new connections. */
    public static final int DEFAULT_CONNECTION_TIMEOUT = 50 * 1000;

    /** The default timeout for reading from a connected socket. */
    public static final int DEFAULT_SOCKET_TIMEOUT = 50 * 1000;

    /** The default max connection pool size. */
    public static final int DEFAULT_MAX_CONNECTIONS = 50;

    /** The default HTTP user agent header for AWS Java SDK clients. */
    public static final String DEFAULT_USER_AGENT = VersionInfoUtils.getUserAgent();

    /**
     * Default request retry policy, including the maximum retry count of 3, the
     * default retry condition and the default back-off strategy.
     * 

* Note this default policy might be overridden by a service-specific * default policy, if the user doesn't provide a custom RetryPolicy * implementation by {@link #setRetryPolicy(RetryPolicy)}. For example, * AmazonDynamoDBClient by default uses a different retry policy * {@link PredefinedRetryPolicies#DYNAMODB_DEFAULT}. * * @see PredefinedRetryPolicies#DEFAULT * @see PredefinedRetryPolicies#DYNAMODB_DEFAULT */ public static final RetryPolicy DEFAULT_RETRY_POLICY = PredefinedRetryPolicies.DEFAULT; /** * The default on whether to use the {@link IdleConnectionReaper} to manage stale connections * * @see IdleConnectionReaper */ public static final boolean DEFAULT_USE_REAPER = true; /** The HTTP user agent header passed with all HTTP requests. */ private String userAgent = DEFAULT_USER_AGENT; /** * The maximum number of times that a retryable failed request (ex: a 5xx * response from a service) will be retried. Or -1 if the user has not * explicitly set this value, in which case the configured RetryPolicy will * be used to control the retry count. */ private int maxErrorRetry = -1; /** The retry policy upon failed requests. **/ private RetryPolicy retryPolicy = DEFAULT_RETRY_POLICY; /** * The protocol to use when connecting to Amazon Web Services. *

* The default configuration is to use HTTPS for all requests for increased * security. */ private Protocol protocol = Protocol.HTTPS; /** Optionally specifies the proxy host to connect through. */ private String proxyHost = null; /** Optionally specifies the port on the proxy host to connect through. */ private int proxyPort = -1; /** Optionally specifies the user name to use when connecting through a proxy. */ private String proxyUsername = null; /** Optionally specifies the password to use when connecting through a proxy. */ private String proxyPassword = null; /** Optional Windows domain name for configuring NTLM proxy support. */ private String proxyDomain = null; /** Optional Windows workstation name for configuring NTLM proxy support. */ private String proxyWorkstation = null; /** * Whether to pre-emptively authenticate against a proxy server using basic * authentication */ private boolean preemptiveBasicProxyAuth; /** The maximum number of open HTTP connections. */ private int maxConnections = DEFAULT_MAX_CONNECTIONS; /** * The amount of time to wait (in milliseconds) for data to be transfered * over an established, open connection before the connection is timed out. * A value of 0 means infinity, and is not recommended. */ private int socketTimeout = DEFAULT_SOCKET_TIMEOUT; /** * The amount of time to wait (in milliseconds) when initially establishing * a connection before giving up and timing out. A value of 0 means * infinity, and is not recommended. */ private int connectionTimeout = DEFAULT_CONNECTION_TIMEOUT; /** * Optional size hint (in bytes) for the low level TCP send buffer. This is * an advanced option for advanced users who want to tune low level TCP * parameters to try and squeeze out more performance. */ private int socketSendBufferSizeHint = 0; /** * Optional size hint (in bytes) for the low level TCP receive buffer. This * is an advanced option for advanced users who want to tune low level TCP * parameters to try and squeeze out more performance. */ private int socketReceiveBufferSizeHint = 0; /** * Optional whether to use the {@link IdleConnectionReaper} to manage stale connections. A reason for not running * the {@link IdleConnectionReaper} can be if running in an environment where the modifyThread and modifyThreadGroup * permissions are not allowed. */ private boolean useReaper = DEFAULT_USE_REAPER; /** * Optional override to control which signature algorithm should be used to * sign requests to the service. If not explicitly set, the client will * determine the algorithm to use by inspecting a configuration file baked * in to the SDK. */ private String signerOverride; public ClientConfiguration() {} public ClientConfiguration(ClientConfiguration other) { this.connectionTimeout = other.connectionTimeout; this.maxConnections = other.maxConnections; this.maxErrorRetry = other.maxErrorRetry; this.retryPolicy = other.retryPolicy; this.protocol = other.protocol; this.proxyDomain = other.proxyDomain; this.proxyHost = other.proxyHost; this.proxyPassword = other.proxyPassword; this.proxyPort = other.proxyPort; this.proxyUsername = other.proxyUsername; this.proxyWorkstation = other.proxyWorkstation; this.preemptiveBasicProxyAuth = other.preemptiveBasicProxyAuth; this.socketTimeout = other.socketTimeout; this.userAgent = other.userAgent; this.useReaper = other.useReaper; this.socketReceiveBufferSizeHint = other.socketReceiveBufferSizeHint; this.socketSendBufferSizeHint = other.socketSendBufferSizeHint; this.signerOverride = other.signerOverride; } /** * Returns the protocol (HTTP or HTTPS) to use when connecting to * Amazon Web Services. *

* The default configuration is to use HTTPS for all requests for increased * security. *

* Individual clients can also override this setting by explicitly including * the protocol as part of the endpoint URL when calling * {@link AmazonWebServiceClient#setEndpoint(String)}. * * @return The protocol to use when connecting to Amazon Web Services. */ public Protocol getProtocol() { return protocol; } /** * Sets the protocol (i.e. HTTP or HTTPS) to use when connecting to Amazon * Web Services. *

* The default configuration is to use HTTPS for all requests for increased * security. *

* Individual clients can also override this setting by explicitly including * the protocol as part of the endpoint URL when calling * {@link AmazonWebServiceClient#setEndpoint(String)}. * * @param protocol * The protocol to use when connecting to Amazon Web Services. */ public void setProtocol(Protocol protocol) { this.protocol = protocol; } /** * Sets the protocol (i.e. HTTP or HTTPS) to use when connecting to Amazon * Web Services, and returns the updated ClientConfiguration object so that * additional calls may be chained together. *

* The default configuration is to use HTTPS for all requests for increased * security. *

* Individual clients can also override this setting by explicitly including * the protocol as part of the endpoint URL when calling * {@link AmazonWebServiceClient#setEndpoint(String)}. * * @param protocol * The protocol to use when connecting to Amazon Web Services. * * @return The updated ClientConfiguration object with the new max HTTP * connections setting. */ public ClientConfiguration withProtocol(Protocol protocol) { setProtocol(protocol); return this; } /** * Returns the maximum number of allowed open HTTP connections. * * @return The maximum number of allowed open HTTP connections. */ public int getMaxConnections() { return maxConnections; } /** * Sets the maximum number of allowed open HTTP connections. * * @param maxConnections * The maximum number of allowed open HTTP connections. */ public void setMaxConnections(int maxConnections) { this.maxConnections = maxConnections; } /** * Sets the maximum number of allowed open HTTP connections and returns the * updated ClientConfiguration object. * * @param maxConnections * The maximum number of allowed open HTTP connections. * @return The updated ClientConfiguration object with the new max HTTP * connections setting. */ public ClientConfiguration withMaxConnections(int maxConnections) { setMaxConnections(maxConnections); return this; } /** * Returns the HTTP user agent header to send with all requests. * * @return The user agent string to use when sending requests. */ public String getUserAgent() { return userAgent; } /** * Sets the HTTP user agent header to send with all requests. * * @param userAgent * The user agent string to use when sending requests. */ public void setUserAgent(String userAgent) { this.userAgent = userAgent; } /** * Sets the HTTP user agent header used in requests and returns the updated * ClientConfiguration object. * * @param userAgent * The user agent string to use when sending requests. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withUserAgent(String userAgent) { setUserAgent(userAgent); return this; } /** * Returns the optional proxy host the client will connect through. * * @return The proxy host the client will connect through. */ public String getProxyHost() { return proxyHost; } /** * Sets the optional proxy host the client will connect through. * * @param proxyHost * The proxy host the client will connect through. */ public void setProxyHost(String proxyHost) { this.proxyHost = proxyHost; } /** * Sets the optional proxy host the client will connect through and returns * the updated ClientConfiguration object. * * @param proxyHost * The proxy host the client will connect through. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withProxyHost(String proxyHost) { setProxyHost(proxyHost); return this; } /** * Returns the optional proxy port the client will connect through. * * @return The proxy port the client will connect through. */ public int getProxyPort() { return proxyPort; } /** * Sets the optional proxy port the client will connect through. * * @param proxyPort * The proxy port the client will connect through. */ public void setProxyPort(int proxyPort) { this.proxyPort = proxyPort; } /** * Sets the optional proxy port the client will connect through and returns * the updated ClientConfiguration object. * * @param proxyPort * The proxy port the client will connect through. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withProxyPort(int proxyPort) { setProxyPort(proxyPort); return this; } /** * Returns the optional proxy user name to use if connecting through a * proxy. * * @return The optional proxy user name the configured client will use if * connecting through a proxy. */ public String getProxyUsername() { return proxyUsername; } /** * Sets the optional proxy user name to use if connecting through a proxy. * * @param proxyUsername * The proxy user name to use if connecting through a proxy. */ public void setProxyUsername(String proxyUsername) { this.proxyUsername = proxyUsername; } /** * Sets the optional proxy user name and returns the updated * ClientConfiguration object. * * @param proxyUsername * The proxy user name to use if connecting through a proxy. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withProxyUsername(String proxyUsername) { setProxyUsername(proxyUsername); return this; } /** * Returns the optional proxy password to use when connecting through a * proxy. * * @return The password to use when connecting through a proxy. */ public String getProxyPassword() { return proxyPassword; } /** * Sets the optional proxy password to use when connecting through a proxy. * * @param proxyPassword * The password to use when connecting through a proxy. */ public void setProxyPassword(String proxyPassword) { this.proxyPassword = proxyPassword; } /** * Sets the optional proxy password to use when connecting through a proxy, * and returns the updated ClientConfiguration object. * * @param proxyPassword * The password to use when connecting through a proxy. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withProxyPassword(String proxyPassword) { setProxyPassword(proxyPassword); return this; } /** * Returns the optional Windows domain name for configuring an NTLM proxy. * If you aren't using a Windows NTLM proxy, you do not need to set this * field. * * @return The optional Windows domain name for configuring an NTLM proxy. */ public String getProxyDomain() { return proxyDomain; } /** * Sets the optional Windows domain name for configuration an NTLM proxy. * If you aren't using a Windows NTLM proxy, you do not need to set this * field. * * @param proxyDomain * The optional Windows domain name for configuring an NTLM * proxy. */ public void setProxyDomain(String proxyDomain) { this.proxyDomain = proxyDomain; } /** * Sets the optional Windows domain name for configuration an NTLM proxy and * returns a reference to this updated ClientConfiguration object so that * additional method calls can be chained together. If you aren't using a * Windows NTLM proxy, you do not need to set this field. * * @param proxyDomain * The optional Windows domain name for configuring an NTLM * proxy. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withProxyDomain(String proxyDomain) { setProxyDomain(proxyDomain); return this; } /** * Returns the optional Windows workstation name for configuring NTLM proxy * support. If you aren't using a Windows NTLM proxy, you do not need to set * this field. * * @return The optional Windows workstation name for configuring NTLM proxy * support. */ public String getProxyWorkstation() { return proxyWorkstation; } /** * Sets the optional Windows workstation name for configuring NTLM proxy * support. If you aren't using a Windows NTLM proxy, you do not need to set * this field. * * @param proxyWorkstation * The optional Windows workstation name for configuring NTLM * proxy support. */ public void setProxyWorkstation(String proxyWorkstation) { this.proxyWorkstation = proxyWorkstation; } /** * Sets the optional Windows workstation name for configuring NTLM proxy * support, and returns the updated ClientConfiguration object so that * additional method calls can be chained together. If you aren't using a * Windows NTLM proxy, you do not need to set this field. * * @param proxyWorkstation * The optional Windows workstation name for configuring NTLM * proxy support. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withProxyWorkstation(String proxyWorkstation) { setProxyWorkstation(proxyWorkstation); return this; } /** * Returns the retry policy upon failed requests. * * @return The retry policy upon failed requests. */ public RetryPolicy getRetryPolicy() { return retryPolicy; } /** * Sets the retry policy upon failed requests. User could specify whether * the RetryPolicy should honor maxErrorRetry set by * {@link #setMaxErrorRetry(int)}. * * @param retryPolicy * The retry policy upon failed requests. */ public void setRetryPolicy(RetryPolicy retryPolicy) { this.retryPolicy = retryPolicy; } /** * Sets the retry policy upon failed requests, and returns the updated * ClientConfiguration object. User could specify whether the RetryPolicy * should honor maxErrorRetry set by {@link #setMaxErrorRetry(int)} * * @param retryPolicy * The retry policy upon failed requests. */ public ClientConfiguration withRetryPolicy(RetryPolicy retryPolicy) { setRetryPolicy(retryPolicy); return this; } /** * Returns the maximum number of retry attempts for failed retryable * requests (ex: 5xx error responses from a service). This method returns -1 * before a maxErrorRetry value is explicitly set by * {@link #setMaxErrorRetry(int)}, in which case the configured RetryPolicy * will be used to control the retry count. * * @return The maximum number of retry attempts for failed retryable * requests, or -1 if maxErrorRetry has not been set by * {@link #setMaxErrorRetry(int)}. */ public int getMaxErrorRetry() { return maxErrorRetry; } /** * Sets the maximum number of retry attempts for failed retryable requests * (ex: 5xx error responses from services). * * @param maxErrorRetry * The maximum number of retry attempts for failed retryable * requests. This value should not be negative. */ public void setMaxErrorRetry(int maxErrorRetry) { if (maxErrorRetry < 0) { throw new IllegalArgumentException("maxErrorRetry shoud be non-negative"); } this.maxErrorRetry = maxErrorRetry; } /** * Sets the maximum number of retry attempts for failed retryable requests * (ex: 5xx error responses from services), and returns the updated * ClientConfiguration object. * * @param maxErrorRetry * The maximum number of retry attempts for failed retryable * requests. This value should not be negative. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withMaxErrorRetry(int maxErrorRetry) { setMaxErrorRetry(maxErrorRetry); return this; } /** * Returns the amount of time to wait (in milliseconds) for data to be * transfered over an established, open connection before the connection * times out and is closed. A value of 0 means infinity, and isn't * recommended. * * @return The amount of time to wait (in milliseconds) for data to be * transfered over an established, open connection before the * connection times out and is closed. */ public int getSocketTimeout() { return socketTimeout; } /** * Sets the amount of time to wait (in milliseconds) for data to be * transfered over an established, open connection before the connection * times out and is closed. A value of 0 means infinity, and isn't recommended. * * @param socketTimeout * The amount of time to wait (in milliseconds) for data to be * transfered over an established, open connection before the * connection is times out and is closed. */ public void setSocketTimeout(int socketTimeout) { this.socketTimeout = socketTimeout; } /** * Sets the amount of time to wait (in milliseconds) for data to be * transfered over an established, open connection before the connection * times out and is closed, and returns the updated ClientConfiguration * object so that additional method calls may be chained together. * * @param socketTimeout * The amount of time to wait (in milliseconds) for data to be * transfered over an established, open connection before the * connection is times out and is closed. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withSocketTimeout(int socketTimeout) { setSocketTimeout(socketTimeout); return this; } /** * Returns the amount of time to wait (in milliseconds) when initially * establishing a connection before giving up and timing out. A value of 0 * means infinity, and is not recommended. * * @return The amount of time to wait (in milliseconds) when initially * establishing a connection before giving up and timing out. */ public int getConnectionTimeout() { return connectionTimeout; } /** * Sets the amount of time to wait (in milliseconds) when initially * establishing a connection before giving up and timing out. A value of 0 * means infinity, and is not recommended. * * @param connectionTimeout * The amount of time to wait (in milliseconds) when initially * establishing a connection before giving up and timing out. */ public void setConnectionTimeout(int connectionTimeout) { this.connectionTimeout = connectionTimeout; } /** * Sets the amount of time to wait (in milliseconds) when initially * establishing a connection before giving up and timing out, and returns * the updated ClientConfiguration object so that additional method calls * may be chained together. * * @param connectionTimeout * the amount of time to wait (in milliseconds) when initially * establishing a connection before giving up and timing out. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withConnectionTimeout(int connectionTimeout) { setConnectionTimeout(connectionTimeout); return this; } /** * Checks if the {@link IdleConnectionReaper} is to be started * * @return if the {@link IdleConnectionReaper} is to be started */ public boolean useReaper() { return useReaper; } /** * Sets whether the {@link IdleConnectionReaper} is to be started as a daemon thread * * @param use whether the {@link IdleConnectionReaper} is to be started as a daemon thread * * @see IdleConnectionReaper */ public void setUseReaper(boolean use) { this.useReaper = use; } /** * Sets whether the {@link IdleConnectionReaper} is to be started as a daemon thread * * @param use the {@link IdleConnectionReaper} is to be started as a daemon thread * * @return The updated ClientConfiguration object. */ public ClientConfiguration withReaper(boolean use) { setUseReaper(use); return this; } /** * Returns the optional size hints (in bytes) for the low level TCP send and * receive buffers. This is an advanced option for advanced users who want * to tune low level TCP parameters to try and squeeze out more performance. *

* The optimal TCP buffer sizes for a particular application are highly * dependent on network configuration and operating system configuration and * capabilities. For example, most modern operating systems provide * auto-tuning functionality for TCP buffer sizes, which can have a big * impact on performance for TCP connections that are held open long enough * for the auto-tuning to optimize buffer sizes. *

* Large buffer sizes (ex: 2MB) will allow the operating system to buffer * more data in memory without requiring the remote server to acknowledge * receipt of that information, so can be particularly useful when the * network has high latency. *

* This is only a hint, and the operating system may choose not to * honor it. When using this option, users should always check the * operating system's configured limits and defaults. Most OS's have a * maximum TCP buffer size limit configured, and won't let you go beyond * that limit unless you explicitly raise the max TCP buffer size limit. *

* There are many resources available online to help with configuring TCP * buffer sizes and operating system specific TCP settings, including: *

    *
  • http://onlamp.com/pub/a/onlamp/2005/11/17/tcp_tuning.html
  • *
  • http://fasterdata.es.net/TCP-tuning/
  • *
* * @return A two element array containing first the TCP send buffer size * hint and then the TCP receive buffer size hint. */ public int[] getSocketBufferSizeHints() { return new int[] {socketSendBufferSizeHint, socketReceiveBufferSizeHint}; } /** * Sets the optional size hints (in bytes) for the low level TCP send and * receive buffers. This is an advanced option for advanced users who want * to tune low level TCP parameters to try and squeeze out more performance. *

* The optimal TCP buffer sizes for a particular application are highly * dependent on network configuration and operating system configuration and * capabilities. For example, most modern operating systems provide * auto-tuning functionality for TCP buffer sizes, which can have a big * impact on performance for TCP connections that are held open long enough * for the auto-tuning to optimize buffer sizes. *

* Large buffer sizes (ex: 2MB) will allow the operating system to buffer * more data in memory without requiring the remote server to acknowledge * receipt of that information, so can be particularly useful when the * network has high latency. *

* This is only a hint, and the operating system may choose not to * honor it. When using this option, users should always check the * operating system's configured limits and defaults. Most OS's have a * maximum TCP buffer size limit configured, and won't let you go beyond * that limit unless you explicitly raise the max TCP buffer size limit. *

* There are many resources available online to help with configuring TCP * buffer sizes and operating system specific TCP settings, including: *

    *
  • http://onlamp.com/pub/a/onlamp/2005/11/17/tcp_tuning.html
  • *
  • http://fasterdata.es.net/TCP-tuning/
  • *
* * @param socketSendBufferSizeHint * The size hint (in bytes) for the low level TCP send buffer. * @param socketReceiveBufferSizeHint * The size hint (in bytes) for the low level TCP receive buffer. */ public void setSocketBufferSizeHints( int socketSendBufferSizeHint, int socketReceiveBufferSizeHint) { this.socketSendBufferSizeHint = socketSendBufferSizeHint; this.socketReceiveBufferSizeHint = socketReceiveBufferSizeHint; } /** * Sets the optional size hints (in bytes) for the low level TCP send and * receive buffers, and returns the updated ClientConfiguration object so * that additional method calls may be chained together. *

* This is an advanced option for advanced users who want to tune low level * TCP parameters to try and squeeze out more performance. *

* The optimal TCP buffer sizes for a particular application are highly * dependent on network configuration and operating system configuration and * capabilities. For example, most modern operating systems provide * auto-tuning functionality for TCP buffer sizes, which can have a big * impact on performance for TCP connections that are held open long enough * for the auto-tuning to optimize buffer sizes. *

* Large buffer sizes (ex: 2MB) will allow the operating system to buffer * more data in memory without requiring the remote server to acknowledge * receipt of that information, so can be particularly useful when the * network has high latency. *

* This is only a hint, and the operating system may choose not to * honor it. When using this option, users should always check the * operating system's configured limits and defaults. Most OS's have a * maximum TCP buffer size limit configured, and won't let you go beyond * that limit unless you explicitly raise the max TCP buffer size limit. *

* There are many resources available online to help with configuring TCP * buffer sizes and operating system specific TCP settings, including: *

    *
  • http://onlamp.com/pub/a/onlamp/2005/11/17/tcp_tuning.html
  • *
  • http://fasterdata.es.net/TCP-tuning/
  • *
* * @param socketSendBufferSizeHint * The size hint (in bytes) for the low level TCP send buffer. * @param socketReceiveBufferSizeHint * The size hint (in bytes) for the low level TCP receive buffer. * * @return The updated ClientConfiguration object. */ public ClientConfiguration withSocketBufferSizeHints( int socketSendBufferSizeHint, int socketReceiveBufferSizeHint) { setSocketBufferSizeHints(socketSendBufferSizeHint, socketReceiveBufferSizeHint); return this; } /** * Returns the name of the signature algorithm to use for signing requests * made by this client. If not set or explicitly set to null, the client * will choose a signature algorithm to use based on a configuration file * of supported signature algorithms for the service and region. *

* Most users do not need to concern themselves with which signature * algorithm is being used, as the defaults will be sufficient. This * setting exists only so advanced users can opt in to newer signature * protocols which have not yet been made the default for a particular * service/region. *

* Not all services support all signature algorithms, and configuring an * unsupported signature algorithm will lead to authentication failures. * Use me at your own risk, and only after consulting the documentation * for the service to ensure it actually does supports your chosen * algorithm. *

* If non-null, the name returned from this method is used to look up * a {@code Signer} class implementing the chosen algorithm by the * {@code com.amazonaws.auth.SignerFactory} class. * * @return The signature algorithm to use for this client, or null to use * the default. */ public String getSignerOverride() { return signerOverride; } /** * Sets the name of the signature algorithm to use for signing requests * made by this client. If not set or explicitly set to null, the client * will choose a signature algorithm to use based on a configuration file * of supported signature algorithms for the service and region. *

* Most users do not need to concern themselves with which signature * algorithm is being used, as the defaults will be sufficient. This * setting exists only so advanced users can opt in to newer signature * protocols which have not yet been made the default for a particular * service/region. *

* Not all services support all signature algorithms, and configuring an * unsupported signature algorithm will lead to authentication failures. * Use me at your own risk, and only after consulting the documentation * for the service to ensure it actually does supports your chosen * algorithm. *

* If non-null, the name returned from this method is used to look up * a {@code Signer} class implementing the chosen algorithm by the * {@code com.amazonaws.auth.SignerFactory} class. * * @param value The signature algorithm to use for this client, or null * to use the default. */ public void setSignerOverride(final String value) { signerOverride = value; } /** * Sets the name of the signature algorithm to use for signing requests * made by this client. If not set or explicitly set to null, the client * will choose a signature algorithm to use based on a configuration file * of supported signature algorithms for the service and region. *

* Most users do not need to concern themselves with which signature * algorithm is being used, as the defaults will be sufficient. This * setting exists only so advanced users can opt in to newer signature * protocols which have not yet been made the default for a particular * service/region. *

* Not all services support all signature algorithms, and configuring an * unsupported signature algorithm will lead to authentication failures. * Use me at your own risk, and only after consulting the documentation * for the service to ensure it actually does supports your chosen * algorithm. *

* If non-null, the name returned from this method is used to look up * a {@code Signer} class implementing the chosen algorithm by the * {@code com.amazonaws.auth.SignerFactory} class. * * @param value The signature algorithm to use for this client, or null * to use the default. * @return The updated ClientConfiguration object. */ public ClientConfiguration withSignerOverride(final String value) { setSignerOverride(value); return this; } /** * Returns whether to attempt to authenticate preemptively against proxy servers * using basic authentication * * @return Whether to authenticate preemptively against proxy server. */ public boolean isPreemptiveBasicProxyAuth() { return preemptiveBasicProxyAuth; } /** * Sets whether to attempt to authenticate preemptively against proxy servers * using basic authentication * * @param preemptiveBasicProxyAuth * Whether to authenticate preemptively against proxy server. */ public void setPreemptiveBasicProxyAuth(Boolean preemptiveBasicProxyAuth) { this.preemptiveBasicProxyAuth = preemptiveBasicProxyAuth; } /** * Sets whether to attempt to authenticate preemptively against proxy * servers using basic authentication, and returns the updated * ClientConfiguration object so that additional method calls may be chained * together. * * @param preemptiveBasicProxyAuth * Whether to authenticate preemptively against proxy server. * @return The updated ClientConfiguration objectt= * */ public ClientConfiguration withPreemptiveBasicProxyAuth(boolean preemptiveBasicProxyAuth) { setPreemptiveBasicProxyAuth(preemptiveBasicProxyAuth); return this; } }





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