Module jakarta.servlet

Package jakarta.servlet

Interface ServletRequest

All Known Subinterfaces:

HttpServletRequest

All Known Implementing Classes:

HttpServletRequestWrapper, ServletRequestWrapper

public interface ServletRequest

Defines an object to provide client request information to a servlet. The servlet container creates a ServletRequest object and passes it as an argument to the servlet's service method.

A ServletRequest object provides data including parameter name and values, attributes, and an input stream. Interfaces that extend ServletRequest can provide additional protocol-specific data (for example, HTTP data is provided by HttpServletRequest.

See Also:

• HttpServletRequest

Method Summary

Modifier and Type	Method	Description
AsyncContext	getAsyncContext()	Gets the AsyncContext that was created or reinitialized by the most recent invocation of startAsync() or startAsync(ServletRequest,ServletResponse) on this request.
Object	getAttribute(String name)	Returns the value of the named attribute as an Object, or null if no attribute of the given name exists.
Enumeration<String>	getAttributeNames()	Returns an Enumeration containing the names of the attributes available to this request.
String	getCharacterEncoding()	Returns the name of the character encoding used in the body of this request.
int	getContentLength()	Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known or is greater than Integer.MAX_VALUE.
long	getContentLengthLong()	Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known.
String	getContentType()	Returns the MIME type of the body of the request, or null if the type is not known.
DispatcherType	getDispatcherType()	Gets the dispatcher type of this request.
ServletInputStream	getInputStream()	Retrieves the body of the request as binary data using a ServletInputStream.
String	getLocalAddr()	Returns the Internet Protocol (IP) address representing the interface on which the request was received.
Locale	getLocale()	Returns the preferred Locale that the client will accept content in, based on the Accept-Language header.
Enumeration<Locale>	getLocales()	Returns an Enumeration of Locale objects indicating, in decreasing order starting with the preferred locale, the locales that are acceptable to the client based on the Accept-Language header.
String	getLocalName()	Returns the fully qualified name of the address returned by getLocalAddr().
int	getLocalPort()	Returns the Internet Protocol (IP) port number representing the interface on which the request was received.
String	getParameter(String name)	Returns the value of a request parameter as a String, or null if the parameter does not exist.
Map<String,String[]>	getParameterMap()	Returns a java.util.Map of the parameters of this request.
Enumeration<String>	getParameterNames()	Returns an Enumeration of String objects containing the names of the parameters contained in this request.
String[]	getParameterValues(String name)	Returns an array of String objects containing all of the values the given request parameter has, or null if the parameter does not exist.
String	getProtocol()	Returns the name and version of the protocol the request uses in the form protocol/majorVersion.minorVersion, for example, HTTP/1.1.
String	getProtocolRequestId()	Obtain the request identifier for this request as defined by the protocol in use.
BufferedReader	getReader()	Retrieves the body of the request as character data using a BufferedReader.
String	getRemoteAddr()	Returns the Internet Protocol (IP) of the remote end of the connection on which the request was received.
String	getRemoteHost()	Returns the fully qualified name of the address returned by getRemoteAddr().
int	getRemotePort()	Returns the Internet Protocol (IP) source port the remote end of the connection on which the request was received.
RequestDispatcher	getRequestDispatcher(String path)	Returns a RequestDispatcher object that acts as a wrapper for the resource located at the given path.
String	getRequestId()	Obtain a unique (within the lifetime of the Servlet container) identifier string for this request.
String	getScheme()	Returns the name of the scheme used to make this request, for example, http, https, or ftp.
String	getServerName()	Returns the host name of the server to which the request was sent.
int	getServerPort()	Returns the port number to which the request was sent.
ServletConnection	getServletConnection()	Obtain details of the network connection to the Servlet container that is being used by this request.
ServletContext	getServletContext()	Gets the servlet context to which this ServletRequest was last dispatched.
boolean	isAsyncStarted()	Checks if this request has been put into asynchronous mode.
boolean	isAsyncSupported()	Checks if this request supports asynchronous operation.
boolean	isSecure()	Returns a boolean indicating whether this request was made using a secure channel, such as HTTPS.
void	removeAttribute(String name)	Removes an attribute from this request.
void	setAttribute(String name, Object o)	Stores an attribute in this request.
void	setCharacterEncoding(String encoding)	Overrides the name of the character encoding used in the body of this request.
default void	setCharacterEncoding(Charset encoding)	Overrides the character encoding used in the body of this request.
AsyncContext	startAsync()	Puts this request into asynchronous mode, and initializes its AsyncContext with the original (unwrapped) ServletRequest and ServletResponse objects.
AsyncContext	startAsync(ServletRequest servletRequest, ServletResponse servletResponse)	Puts this request into asynchronous mode, and initializes its AsyncContext with the given request and response objects.

Method Details

getAttribute

Object getAttribute(String name)

Returns the value of the named attribute as an Object, or null if no attribute of the given name exists.

Attributes can be set two ways. The servlet container may set attributes to make available custom information about a request. For example, for requests made using HTTPS, the attribute jakarta.servlet.request.X509Certificate can be used to retrieve information on the certificate of the client. Attributes can also be set programmatically using setAttribute(java.lang.String, java.lang.Object). This allows information to be embedded into a request before a RequestDispatcher call.

Attribute names should follow the same conventions as package names. The Jakarta Servlet specification reserves names matching jakarta.*.

Parameters:

name - a String specifying the name of the attribute

Returns:

an Object containing the value of the attribute, or null if the attribute does not exist

getAttributeNames

Enumeration<String> getAttributeNames()

Returns an Enumeration containing the names of the attributes available to this request. This method returns an empty Enumeration if the request has no attributes available to it.

Returns:

an Enumeration of strings containing the names of the request's attributes

getCharacterEncoding

String getCharacterEncoding()

Returns the name of the character encoding used in the body of this request. This method returns null if no request encoding character encoding has been specified. The following methods for specifying the request character encoding are consulted, in decreasing order of priority: per request, per web app (using ServletContext.setRequestCharacterEncoding(java.lang.String), deployment descriptor), and per container (for all web applications deployed in that container, using vendor specific configuration).

Returns:

a String containing the name of the character encoding, or null if the request does not specify a character encoding

setCharacterEncoding

void setCharacterEncoding(String encoding)
                   throws UnsupportedEncodingException

Overrides the name of the character encoding used in the body of this request. This method must be called prior to reading request parameters or reading input using getReader(). Otherwise, it has no effect.

Parameters:

encoding - String containing the name of the character encoding.

Throws:

UnsupportedEncodingException - if this ServletRequest is still in a state where a character encoding may be set, but the specified encoding is invalid

setCharacterEncoding

default void setCharacterEncoding(Charset encoding)

Overrides the character encoding used in the body of this request. This method must be called prior to reading request parameters or reading input using getReader(). Otherwise, it has no effect.

Implementations are strongly encouraged to override this default method and provide a more efficient implementation.

Parameters:

encoding - Charset representing the character encoding.

Since:

Servlet 6.1

getContentLength

int getContentLength()

Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known or is greater than Integer.MAX_VALUE.

Returns:

an integer containing the length of the request body or -1 if the length is not known or is greater than Integer.MAX_VALUE.

getContentLengthLong

long getContentLengthLong()

Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known.

Returns:

a long containing the length of the request body or -1L if the length is not known

Since:

Servlet 3.1

getContentType

String getContentType()

Returns the MIME type of the body of the request, or null if the type is not known.

Returns:

a String containing the name of the MIME type of the request, or null if the type is not known

getInputStream

ServletInputStream getInputStream()
                           throws IOException

Retrieves the body of the request as binary data using a ServletInputStream. Either this method or getReader() may be called to read the body, not both.

Returns:

a ServletInputStream object containing the body of the request

Throws:

IllegalStateException - if the getReader() method has already been called for this request

IOException - if an input or output exception occurred

getParameter

String getParameter(String name)

Returns the value of a request parameter as a String, or null if the parameter does not exist. Request parameters are extra information sent with the request. For HTTP servlets, parameters are contained in the query string or posted form data.

You should only use this method when you are sure the parameter has only one value. If the parameter might have more than one value, use getParameterValues(java.lang.String).

If you use this method with a multivalued parameter, the value returned is equal to the first value in the array returned by getParameterValues.

If the parameter data was sent in the request body, such as occurs with an HTTP POST request, then reading the body directly via getInputStream() or getReader() can interfere with the execution of this method.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Parameters:

name - a String specifying the name of the parameter

Returns:

a String representing the single value of the parameter

Throws:

IllegalStateException - if parameter parsing is triggered and a problem is encountered parsing the parameters including, but not limited to: invalid percent (%nn) encoding; invalid byte sequence for the specified character set; I/O errors reading the request body; and triggering a container defined limit related to parameter parsing. Containers may provide container specific options to handle some or all of these errors in an alternative manner that may include not throwing an exception.

See Also:

• getParameterValues(java.lang.String)

getParameterNames

Enumeration<String> getParameterNames()

Returns an Enumeration of String objects containing the names of the parameters contained in this request. If the request has no parameters, the method returns an empty Enumeration.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Returns:

an Enumeration of String objects, each String containing the name of a request parameter; or an empty Enumeration if the request has no parameters

Throws:

IllegalStateException - if parameter parsing is triggered and a problem is encountered parsing the parameters including, but not limited to: invalid percent (%nn) encoding; invalid byte sequence for the specified character set; I/O errors reading the request body; and triggering a container defined limit related to parameter parsing. Containers may provide container specific options to handle some or all of these errors in an alternative manner that may include not throwing an exception.

getParameterValues

String[] getParameterValues(String name)

Returns an array of String objects containing all of the values the given request parameter has, or null if the parameter does not exist.

If the parameter has a single value, the array has a length of 1.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Parameters:

name - a String containing the name of the parameter whose value is requested

Returns:

an array of String objects containing the parameter's values

Throws:

IllegalStateException - if parameter parsing is triggered and a problem is encountered parsing the parameters including, but not limited to: invalid percent (%nn) encoding; invalid byte sequence for the specified character set; I/O errors reading the request body; and triggering a container defined limit related to parameter parsing. Containers may provide container specific options to handle some or all of these errors in an alternative manner that may include not throwing an exception.

See Also:

• getParameter(java.lang.String)

getParameterMap

Map<String,String[]> getParameterMap()

Returns a java.util.Map of the parameters of this request.

Request parameters are extra information sent with the request. For HTTP servlets, parameters are contained in the query string or posted form data.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Returns:

an immutable java.util.Map containing parameter names as keys and parameter values as map values. The keys in the parameter map are of type String. The values in the parameter map are of type String array.

Throws:

IllegalStateException - if parameter parsing is triggered and a problem is encountered parsing the parameters including, but not limited to: invalid percent (%nn) encoding; invalid byte sequence for the specified character set; I/O errors reading the request body; and triggering a container defined limit related to parameter parsing. Containers may provide container specific options to handle some or all of these errors in an alternative manner that may include not throwing an exception.

getProtocol

String getProtocol()

Returns the name and version of the protocol the request uses in the form protocol/majorVersion.minorVersion, for example, HTTP/1.1.

Returns:

a String containing the protocol name and version number

getScheme

String getScheme()

Returns the name of the scheme used to make this request, for example, http, https, or ftp. Different schemes have different rules for constructing URLs, as noted in RFC 1738.

Returns:

a String containing the name of the scheme used to make this request

getServerName

String getServerName()

Returns the host name of the server to which the request was sent. It may be derived from a protocol specific mechanism, such as the Host header, or the HTTP/2 authority, or RFC 7239, otherwise the resolved server name or the server IP address.

Returns:

a String containing the name of the server

getServerPort

int getServerPort()

Returns the port number to which the request was sent. It may be derived from a protocol specific mechanism, such as the Host header, or HTTP authority, or RFC 7239, otherwise the server port where the client connection was accepted on.

Returns:

an integer specifying the port number

getReader

BufferedReader getReader()
                  throws IOException

Retrieves the body of the request as character data using a BufferedReader. The reader translates the character data according to the character encoding used on the body. Either this method or getInputStream() may be called to read the body, not both.

Returns:

a BufferedReader containing the body of the request

Throws:

UnsupportedEncodingException - if the character set encoding used is not supported and the text cannot be decoded

IllegalStateException - if getInputStream() method has been called on this request

IOException - if an input or output exception occurred

See Also:

• getInputStream()

getRemoteAddr

String getRemoteAddr()

Returns the Internet Protocol (IP) of the remote end of the connection on which the request was received. By default this is either the address of the client or last proxy that sent the request. In some cases a protocol specific mechanism, such as RFC 7239, may be used to obtain an address different to that of the actual TCP/IP connection.

Returns:

a String containing an IP address

getRemoteHost

String getRemoteHost()

Returns the fully qualified name of the address returned by getRemoteAddr(). If the engine cannot or chooses not to resolve the hostname (to improve performance), this method returns the IP address.

Returns:

a String containing a fully qualified name or IP address.

setAttribute

void setAttribute(String name,
 Object o)

Stores an attribute in this request. Attributes are reset between requests. This method is most often used in conjunction with RequestDispatcher.

Attribute names should follow the same conventions as package names.
If the object passed in is null, the effect is the same as calling removeAttribute(java.lang.String).
It is warned that when the request is dispatched from the servlet resides in a different web application by RequestDispatcher, the object set by this method may not be correctly retrieved in the caller servlet.

Parameters:

name - a String specifying the name of the attribute

o - the Object to be stored

removeAttribute

void removeAttribute(String name)

Removes an attribute from this request. This method is not generally needed as attributes only persist as long as the request is being handled.

Attribute names should follow the same conventions as package names. Names beginning with jakarta.* are reserved for use by the Jakarta Servlet specification.

Parameters:

name - a String specifying the name of the attribute to remove

getLocale

Locale getLocale()

Returns the preferred Locale that the client will accept content in, based on the Accept-Language header. If the client request doesn't provide an Accept-Language header, this method returns the default locale for the server.

Returns:

the preferred Locale for the client

getLocales

Enumeration<Locale> getLocales()

Returns an Enumeration of Locale objects indicating, in decreasing order starting with the preferred locale, the locales that are acceptable to the client based on the Accept-Language header. If the client request doesn't provide an Accept-Language header, this method returns an Enumeration containing one Locale, the default locale for the server.

Returns:

an Enumeration of preferred Locale objects for the client

isSecure

boolean isSecure()

Returns a boolean indicating whether this request was made using a secure channel, such as HTTPS.

Returns:

a boolean indicating if the request was made using a secure channel

getRequestDispatcher

RequestDispatcher getRequestDispatcher(String path)

Returns a RequestDispatcher object that acts as a wrapper for the resource located at the given path. A RequestDispatcher object can be used to forward a request to the resource or to include the resource in a response. The resource can be dynamic or static.

The pathname specified may be relative, although it cannot extend outside the current servlet context. If the path begins with a "/" it is interpreted as relative to the current context root. This method returns null if the servlet container cannot return a RequestDispatcher.

Using a RequestDispatcher, requests may be dispatched to any part of the web application bypassing both implicit (no direct access to WEB-INF or META-INF) and explicit (defined by the web application) security constraints. Unsanitized user provided data must not be used to construct the path passed to the RequestDispatcher as it is very likely to create a security vulnerability in the application.

The difference between this method and ServletContext.getRequestDispatcher(java.lang.String) is that this method can take a relative path.

Parameters:

path - a String specifying the pathname to the resource. If it is relative, it must be relative against the current servlet.

Returns:

a RequestDispatcher object that acts as a wrapper for the resource at the specified path, or null if the servlet container cannot return a RequestDispatcher

See Also:

• RequestDispatcher
• ServletContext.getRequestDispatcher(java.lang.String)

getRemotePort

int getRemotePort()

Returns the Internet Protocol (IP) source port the remote end of the connection on which the request was received. By default this is either the port of the client or last proxy that sent the request. In some cases, protocol specific mechanisms such as RFC 7239 may be used to obtain a port different to that of the actual TCP/IP connection.

Returns:

an integer specifying the port number

Since:

Servlet 2.4

getLocalName

String getLocalName()

Returns the fully qualified name of the address returned by getLocalAddr(). If the engine cannot or chooses not to resolve the hostname (to improve performance), this method returns the IP address.

Returns:

a String containing the host name of the IP on which the request was received.

Since:

Servlet 2.4

getLocalAddr

String getLocalAddr()

Returns the Internet Protocol (IP) address representing the interface on which the request was received. In some cases a protocol specific mechanism, such as RFC 7239, may be used to obtain an address different to that of the actual TCP/IP connection.

Returns:

a String containing an IP address.

Since:

Servlet 2.4

getLocalPort

int getLocalPort()

Returns the Internet Protocol (IP) port number representing the interface on which the request was received. In some cases, a protocol specific mechanism such as RFC 7239 may be used to obtain an address different to that of the actual TCP/IP connection.

Returns:

an integer specifying a port number

Since:

Servlet 2.4

getServletContext

ServletContext getServletContext()

Gets the servlet context to which this ServletRequest was last dispatched.

Returns:

the servlet context to which this ServletRequest was last dispatched

Since:

Servlet 3.0

startAsync

AsyncContext startAsync()
                 throws IllegalStateException

Puts this request into asynchronous mode, and initializes its AsyncContext with the original (unwrapped) ServletRequest and ServletResponse objects.

Calling this method will cause committal of the associated response to be delayed until AsyncContext.complete() is called on the returned AsyncContext, or the asynchronous operation has timed out.

Calling AsyncContext.hasOriginalRequestAndResponse() on the returned AsyncContext will return true. Any filters invoked in the outbound direction after this request was put into asynchronous mode may use this as an indication that any request and/or response wrappers that they added during their inbound invocation need not stay around for the duration of the asynchronous operation, and therefore any of their associated resources may be released.

This method clears the list of AsyncListener instances (if any) that were registered with the AsyncContext returned by the previous call to one of the startAsync methods, after calling each AsyncListener at its onStartAsync method.

Subsequent invocations of this method, or its overloaded variant, will return the same AsyncContext instance, reinitialized as appropriate.

Returns:

the (re)initialized AsyncContext

Throws:

IllegalStateException - if this request is within the scope of a filter or servlet that does not support asynchronous operations (that is, isAsyncSupported() returns false), or if this method is called again without any asynchronous dispatch (resulting from one of the AsyncContext.dispatch() methods), is called outside the scope of any such dispatch, or is called again within the scope of the same dispatch, or if the response has already been closed

Since:

Servlet 3.0

See Also:

• AsyncContext.dispatch()

startAsync

AsyncContext startAsync(ServletRequest servletRequest,
 ServletResponse servletResponse)
                 throws IllegalStateException

Puts this request into asynchronous mode, and initializes its AsyncContext with the given request and response objects.

The ServletRequest and ServletResponse arguments must be the same instances, or instances of ServletRequestWrapper and ServletResponseWrapper that wrap them, that were passed to the service method of the Servlet or the doFilter method of the Filter, respectively, in whose scope this method is being called.

Calling this method will cause committal of the associated response to be delayed until AsyncContext.complete() is called on the returned AsyncContext, or the asynchronous operation has timed out.

Calling AsyncContext.hasOriginalRequestAndResponse() on the returned AsyncContext will return false, unless the passed in ServletRequest and ServletResponse arguments are the original ones or do not carry any application-provided wrappers. Any filters invoked in the outbound direction after this request was put into asynchronous mode may use this as an indication that some of the request and/or response wrappers that they added during their inbound invocation may need to stay in place for the duration of the asynchronous operation, and their associated resources may not be released. A ServletRequestWrapper applied during the inbound invocation of a filter may be released by the outbound invocation of the filter only if the given servletRequest, which is used to initialize the AsyncContext and will be returned by a call to AsyncContext.getRequest(), does not contain said ServletRequestWrapper. The same holds true for ServletResponseWrapper instances.

This method clears the list of AsyncListener instances (if any) that were registered with the AsyncContext returned by the previous call to one of the startAsync methods, after calling each AsyncListener at its onStartAsync method.

Subsequent invocations of this method, or its zero-argument variant, will return the same AsyncContext instance, reinitialized as appropriate. If a call to this method is followed by a call to its zero-argument variant, the specified (and possibly wrapped) request and response objects will remain locked in on the returned AsyncContext.

Parameters:

servletRequest - the ServletRequest used to initialize the AsyncContext

servletResponse - the ServletResponse used to initialize the AsyncContext

Returns:

the (re)initialized AsyncContext

Throws:

IllegalStateException - if this request is within the scope of a filter or servlet that does not support asynchronous operations (that is, isAsyncSupported() returns false), or if this method is called again without any asynchronous dispatch (resulting from one of the AsyncContext.dispatch() methods), is called outside the scope of any such dispatch, or is called again within the scope of the same dispatch, or if the response has already been closed

Since:

Servlet 3.0

isAsyncStarted

boolean isAsyncStarted()

Checks if this request has been put into asynchronous mode.

A ServletRequest is put into asynchronous mode by calling startAsync() or startAsync(ServletRequest,ServletResponse) on it.

This method returns false if this request was put into asynchronous mode, but has since been dispatched using one of the AsyncContext.dispatch() methods or released from asynchronous mode via a call to AsyncContext.complete(). If AsyncContext.dispatch() or AsyncContext.complete() is called before the container-initiated dispatch that called startAsync() has returned to the container then this method must return true until the container-initiated dispatch that called startAsync() has returned to the container.

Returns:

true if this request has been put into asynchronous mode, false otherwise

Since:

Servlet 3.0

isAsyncSupported

boolean isAsyncSupported()

Checks if this request supports asynchronous operation.

Asynchronous operation is disabled for this request if this request is within the scope of a filter or servlet that has not been annotated or flagged in the deployment descriptor as being able to support asynchronous handling.

Returns:

true if this request supports asynchronous operation, false otherwise

Since:

Servlet 3.0

getAsyncContext

AsyncContext getAsyncContext()

Gets the AsyncContext that was created or reinitialized by the most recent invocation of startAsync() or startAsync(ServletRequest,ServletResponse) on this request.

Returns:

the AsyncContext that was created or reinitialized by the most recent invocation of startAsync() or startAsync(ServletRequest,ServletResponse) on this request

Throws:

IllegalStateException - if this request has not been put into asynchronous mode, i.e., if neither startAsync() nor startAsync(ServletRequest,ServletResponse) has been called

Since:

Servlet 3.0

getDispatcherType

DispatcherType getDispatcherType()

Gets the dispatcher type of this request.

The dispatcher type of a request is used by the container to select the filters that need to be applied to the request: Only filters with matching dispatcher type and url patterns will be applied.

Allowing a filter that has been configured for multiple dispatcher types to query a request for its dispatcher type allows the filter to process the request differently depending on its dispatcher type.

The initial dispatcher type of a request is defined as DispatcherType.REQUEST. The dispatcher type of a request dispatched via RequestDispatcher.forward(ServletRequest, ServletResponse) or RequestDispatcher.include(ServletRequest, ServletResponse) is given as DispatcherType.FORWARD or DispatcherType.INCLUDE, respectively, while the dispatcher type of an asynchronous request dispatched via one of the AsyncContext.dispatch() methods is given as DispatcherType.ASYNC. Finally, the dispatcher type of a request dispatched to an error page by the container's error handling mechanism is given as DispatcherType.ERROR.

Returns:

the dispatcher type of this request

Since:

Servlet 3.0

See Also:

• DispatcherType

getRequestId

String getRequestId()

Obtain a unique (within the lifetime of the Servlet container) identifier string for this request.

There is no defined format for this string. The format is implementation dependent.

Returns:

A unique identifier for the request

Since:

Servlet 6.0

getProtocolRequestId

String getProtocolRequestId()

Obtain the request identifier for this request as defined by the protocol in use. Note that some protocols do not define such an identifier.

Examples of protocol provided request identifiers include:

HTTP 1.x

None, so the empty string should be returned

HTTP 2

The stream identifier

HTTP 3

The stream identifier

AJP

None, so the empty string should be returned

Returns:

The request identifier if one is defined, otherwise an empty string

Since:

Servlet 6.0

getServletConnection

ServletConnection getServletConnection()

Obtain details of the network connection to the Servlet container that is being used by this request. The information presented may differ from information presented elsewhere in the Servlet API as raw information is presented without adjustments for, example, use of reverse proxies that may be applied elsewhere in the Servlet API.

Returns:

The network connection details.

Since:

Servlet 6.0