org.apache.commons.httpclient.params
Class HttpMethodParams

java.lang.Object
  org.apache.commons.httpclient.params.DefaultHttpParams
      org.apache.commons.httpclient.params.HttpMethodParams

All Implemented Interfaces:

Serializable, Cloneable, HttpParams

Direct Known Subclasses:

HttpClientParams

public class HttpMethodParams
extends DefaultHttpParams

This class represents a collection of HTTP protocol parameters applicable to HTTP methods. Protocol parameters may be linked together to form a hierarchy. If a particular parameter value has not been explicitly defined in the collection itself, its value will be drawn from the parent collection of parameters.

Since:

3.0

Version:

$Revision: 354155 $

Author:

Oleg Kalnichevski, Christian Kohlschuetter

See Also:

Serialized Form

Field Summary

static String	BUFFER_WARN_TRIGGER_LIMIT Sets the maximum buffered response size (in bytes) that triggers no warning.
static String	COOKIE_POLICY Defines cookie policy to be used for cookie management.
static String	CREDENTIAL_CHARSET Defines the charset to be used when encoding Credentials.
static String	DATE_PATTERNS The key used to look up the date patterns used for parsing.
static String	HEAD_BODY_CHECK_TIMEOUT Sets period of time in milliseconds to wait for a content body sent in response to HEAD method from a non-compliant server.
static String	HTTP_CONTENT_CHARSET Defines the charset to be used for encoding content body.
static String	HTTP_ELEMENT_CHARSET Defines the charset to be used for encoding HTTP protocol elements.
static String	MULTIPART_BOUNDARY Sets the value to use as the multipart boundary.
static String	PROTOCOL_VERSION Defines the HTTP protocol version used by HTTP methods per default.
static String	REJECT_HEAD_BODY Defines whether the content body sent in response to HeadMethod should be rejected.
static String	RETRY_HANDLER Sets the method retry handler parameter.
static String	SINGLE_COOKIE_HEADER Defines whether cookies should be put on a single response header.
static String	SO_TIMEOUT Sets the socket timeout (SO_TIMEOUT) in milliseconds to be used when executing the method.
static String	STATUS_LINE_GARBAGE_LIMIT Defines the maximum number of ignorable lines before we expect a HTTP response's status code.
static String	STRICT_TRANSFER_ENCODING Defines whether responses with an invalid Transfer-Encoding header should be rejected.
static String	UNAMBIGUOUS_STATUS_LINE Defines whether HTTP methods should reject ambiguous HTTP status line.
static String	USE_EXPECT_CONTINUE Activates 'Expect: 100-Continue' handshake for the entity enclosing methods.
static String	USER_AGENT Defines the content of the User-Agent header used by HTTP methods.
static String	VIRTUAL_HOST Defines the virtual host name.
static String	WARN_EXTRA_INPUT Defines HttpClient's behavior when a response provides more bytes than expected (specified with Content-Length, for example).

Constructor Summary

HttpMethodParams()
Creates a new collection of parameters with the collection returned by DefaultHttpParams.getDefaultParams() as a parent.

HttpMethodParams(HttpParams defaults)
Creates a new collection of parameters with the given parent.

Method Summary

String	getContentCharset() Returns the default charset to be used for writing content body, when no charset explicitly specified.
String	getCookiePolicy() Returns cookie policy to be used by the HTTP methods this collection of parameters applies to.
String	getCredentialCharset() Returns the charset to be used for Credentials.
String	getHttpElementCharset() Returns the charset to be used for writing HTTP headers.
int	getSoTimeout() Returns the default socket timeout (SO_TIMEOUT) in milliseconds which is the timeout for waiting for data.
HttpVersion	getVersion() Returns HTTP protocol version to be used by the HTTP methods that this collection of parameters applies to.
String	getVirtualHost() Returns the virtual host name.
void	makeLenient() Makes the HTTP methods attempt to mimic the exact behaviour of commonly used HTTP agents, which many HTTP servers expect, even though such behaviour may violate the HTTP protocol specification (RFC 2616 and other relevant RFCs).
void	makeStrict() Makes the HTTP methods strictly follow the HTTP protocol specification (RFC 2616 and other relevant RFCs).
void	setContentCharset(String charset) Sets the default charset to be used for writing content body, when no charset explicitly specified.
void	setCookiePolicy(String policy) Assigns the cookie policy to be used by the HTTP methods this collection of parameters applies to.
void	setCredentialCharset(String charset) Sets the charset to be used for writing HTTP headers.
void	setHttpElementCharset(String charset) Sets the charset to be used for writing HTTP headers.
void	setSoTimeout(int timeout) Sets the default socket timeout (SO_TIMEOUT) in milliseconds which is the timeout for waiting for data.
void	setVersion(HttpVersion version) Assigns the HTTP protocol version to be used by the HTTP methods that this collection of parameters applies to.
void	setVirtualHost(String hostname) Sets the virtual host name.

Methods inherited from class org.apache.commons.httpclient.params.DefaultHttpParams

clear, clone, getBooleanParameter, getDefaultParams, getDefaults, getDoubleParameter, getIntParameter, getLongParameter, getParameter, isParameterFalse, isParameterSet, isParameterSetLocally, isParameterTrue, setBooleanParameter, setDefaults, setDoubleParameter, setHttpParamsFactory, setIntParameter, setLongParameter, setParameter, setParameters

Methods inherited from class java.lang.Object

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

Field Detail

USER_AGENT

public static final String USER_AGENT

Defines the content of the User-Agent header used by HTTP methods.

This parameter expects a value of type String.

See Also:

Constant Field Values

PROTOCOL_VERSION

public static final String PROTOCOL_VERSION

Defines the HTTP protocol version used by HTTP methods per default.

This parameter expects a value of type HttpVersion.

See Also:

Constant Field Values

UNAMBIGUOUS_STATUS_LINE

public static final String UNAMBIGUOUS_STATUS_LINE

Defines whether HTTP methods should reject ambiguous HTTP status line.

This parameter expects a value of type Boolean.

See Also:

Constant Field Values

SINGLE_COOKIE_HEADER

public static final String SINGLE_COOKIE_HEADER

Defines whether cookies should be put on a single response header.

This parameter expects a value of type Boolean.

See Also:

Constant Field Values

STRICT_TRANSFER_ENCODING

public static final String STRICT_TRANSFER_ENCODING

Defines whether responses with an invalid Transfer-Encoding header should be rejected.

This parameter expects a value of type Boolean.

See Also:

Constant Field Values

REJECT_HEAD_BODY

public static final String REJECT_HEAD_BODY

Defines whether the content body sent in response to HeadMethod should be rejected.

This parameter expects a value of type Boolean.

See Also:

Constant Field Values

HEAD_BODY_CHECK_TIMEOUT

public static final String HEAD_BODY_CHECK_TIMEOUT

Sets period of time in milliseconds to wait for a content body sent in response to HEAD method from a non-compliant server. If the parameter is not set or set to -1 non-compliant response body check is disabled.

This parameter expects a value of type Integer.

See Also:

Constant Field Values

USE_EXPECT_CONTINUE

public static final String USE_EXPECT_CONTINUE

Activates 'Expect: 100-Continue' handshake for the entity enclosing methods. The purpose of the 'Expect: 100-Continue' handshake to allow a client that is sending a request message with a request body to determine if the origin server is willing to accept the request (based on the request headers) before the client sends the request body.

The use of the 'Expect: 100-continue' handshake can result in noticable peformance improvement for entity enclosing requests (such as POST and PUT) that require the target server's authentication.

'Expect: 100-continue' handshake should be used with caution, as it may cause problems with HTTP servers and proxies that do not support HTTP/1.1 protocol.

This parameter expects a value of type Boolean.

See Also:

Constant Field Values

CREDENTIAL_CHARSET

public static final String CREDENTIAL_CHARSET

Defines the charset to be used when encoding Credentials. If not defined then the HTTP_ELEMENT_CHARSET should be used.

This parameter expects a value of type String.

See Also:

Constant Field Values

HTTP_ELEMENT_CHARSET

public static final String HTTP_ELEMENT_CHARSET

Defines the charset to be used for encoding HTTP protocol elements.

This parameter expects a value of type String.

See Also:

Constant Field Values

HTTP_CONTENT_CHARSET

public static final String HTTP_CONTENT_CHARSET

Defines the charset to be used for encoding content body.

This parameter expects a value of type String.

See Also:

Constant Field Values

COOKIE_POLICY

public static final String COOKIE_POLICY

Defines cookie policy to be used for cookie management.

This parameter expects a value of type String.

See Also:

Constant Field Values

WARN_EXTRA_INPUT

public static final String WARN_EXTRA_INPUT

Defines HttpClient's behavior when a response provides more bytes than expected (specified with Content-Length, for example).

Such surplus data makes the HTTP connection unreliable for keep-alive requests, as malicious response data (faked headers etc.) can lead to undesired results on the next request using that connection.

If this parameter is set to true, any detection of extra input data will generate a warning in the log.

This parameter expects a value of type Boolean.

See Also:

Constant Field Values

STATUS_LINE_GARBAGE_LIMIT

public static final String STATUS_LINE_GARBAGE_LIMIT

Defines the maximum number of ignorable lines before we expect a HTTP response's status code.

With HTTP/1.1 persistent connections, the problem arises that broken scripts could return a wrong Content-Length (there are more bytes sent than specified).
Unfortunately, in some cases, this is not possible after the bad response, but only before the next one.
So, HttpClient must be able to skip those surplus lines this way.

Set this to 0 to disallow any garbage/empty lines before the status line.
To specify no limit, use Integer.MAX_VALUE (default in lenient mode).

This parameter expects a value of type Integer.

See Also:

Constant Field Values

SO_TIMEOUT

public static final String SO_TIMEOUT

Sets the socket timeout (SO_TIMEOUT) in milliseconds to be used when executing the method. A timeout value of zero is interpreted as an infinite timeout.

This parameter expects a value of type Integer.

See Also:

SocketOptions.SO_TIMEOUT, Constant Field Values

DATE_PATTERNS

public static final String DATE_PATTERNS

The key used to look up the date patterns used for parsing. The String patterns are stored in a Collection and must be compatible with SimpleDateFormat.

This parameter expects a value of type Collection.

See Also:

Constant Field Values

RETRY_HANDLER

public static final String RETRY_HANDLER

Sets the method retry handler parameter.

This parameter expects a value of type HttpMethodRetryHandler.

See Also:

Constant Field Values

BUFFER_WARN_TRIGGER_LIMIT

public static final String BUFFER_WARN_TRIGGER_LIMIT

Sets the maximum buffered response size (in bytes) that triggers no warning. Buffered responses exceeding this size will trigger a warning in the log.

This parameter expects a value if type Integer.

See Also:

Constant Field Values

VIRTUAL_HOST

public static final String VIRTUAL_HOST

Defines the virtual host name.

This parameter expects a value of type String.

See Also:

Constant Field Values

MULTIPART_BOUNDARY

public static final String MULTIPART_BOUNDARY

Sets the value to use as the multipart boundary.

This parameter expects a value if type String.

See Also:

MultipartRequestEntity, Constant Field Values

Constructor Detail

HttpMethodParams

public HttpMethodParams()

Creates a new collection of parameters with the collection returned by DefaultHttpParams.getDefaultParams() as a parent. The collection will defer to its parent for a default value if a particular parameter is not explicitly set in the collection itself.

See Also:

DefaultHttpParams.getDefaultParams()

HttpMethodParams

public HttpMethodParams(HttpParams defaults)

Creates a new collection of parameters with the given parent. The collection will defer to its parent for a default value if a particular parameter is not explicitly set in the collection itself.

Parameters:

defaults - the parent collection to defer to, if a parameter is not explictly set in the collection itself.

See Also:

DefaultHttpParams.getDefaultParams()

Method Detail

getHttpElementCharset

public String getHttpElementCharset()

Returns the charset to be used for writing HTTP headers.

Returns:

The charset

setHttpElementCharset

public void setHttpElementCharset(String charset)

Sets the charset to be used for writing HTTP headers.

Parameters:

charset - The charset

getContentCharset

public String getContentCharset()

Returns the default charset to be used for writing content body, when no charset explicitly specified.

Returns:

The charset

setContentCharset

public void setContentCharset(String charset)

Sets the default charset to be used for writing content body, when no charset explicitly specified.

Parameters:

charset - The charset

getCredentialCharset

public String getCredentialCharset()

Returns the charset to be used for Credentials. If not configured the HTTP element charset is used.

Returns:

The charset

setCredentialCharset

public void setCredentialCharset(String charset)

Sets the charset to be used for writing HTTP headers.

Parameters:

charset - The charset

getVersion

public HttpVersion getVersion()

Returns HTTP protocol version to be used by the HTTP methods that this collection of parameters applies to.

Returns:

HTTP protocol version

setVersion

public void setVersion(HttpVersion version)

Assigns the HTTP protocol version to be used by the HTTP methods that this collection of parameters applies to.

Parameters:

version - the HTTP protocol version

getCookiePolicy

public String getCookiePolicy()

Returns cookie policy to be used by the HTTP methods this collection of parameters applies to.

Returns:

cookie policy

setCookiePolicy

public void setCookiePolicy(String policy)

Assigns the cookie policy to be used by the HTTP methods this collection of parameters applies to.

Parameters:

policy - the cookie policy

getSoTimeout

public int getSoTimeout()

Returns the default socket timeout (SO_TIMEOUT) in milliseconds which is the timeout for waiting for data. A timeout value of zero is interpreted as an infinite timeout.

Returns:

timeout in milliseconds

setSoTimeout

public void setSoTimeout(int timeout)

Sets the default socket timeout (SO_TIMEOUT) in milliseconds which is the timeout for waiting for data. A timeout value of zero is interpreted as an infinite timeout.

Parameters:

timeout - Timeout in milliseconds

setVirtualHost

public void setVirtualHost(String hostname)

Sets the virtual host name.

Parameters:

hostname - The host name

getVirtualHost

public String getVirtualHost()

Returns the virtual host name.

Returns:

The virtual host name

makeStrict

public void makeStrict()

Makes the HTTP methods strictly follow the HTTP protocol specification (RFC 2616 and other relevant RFCs). It must be noted that popular HTTP agents have different degree of HTTP protocol compliance and some HTTP serves are programmed to expect the behaviour that does not strictly adhere to the HTTP specification.

makeLenient

public void makeLenient()

Makes the HTTP methods attempt to mimic the exact behaviour of commonly used HTTP agents, which many HTTP servers expect, even though such behaviour may violate the HTTP protocol specification (RFC 2616 and other relevant RFCs).