Prior to this commit, if attributes were configured in the builder
returned by `ServerRequest.from(...)`, those attributes were not
available in the `ServerRequest` built by the builder. In addition, any
attributes in the original `ServerRequest` supplied to
`ServerRequest.from(...)` were also ignored.
This commit addresses this issue by ensuring that the attributes
configured via DefaultServerRequestBuilder are used as the attributes
in the resulting `ServerRequest`.
This commit also polishes the Javadoc in `ServerRequest` and
`ClientResponse` and avoids the use of lambda expressions in the
constructors for `DefaultServerRequestBuilder` and
`DefaultClientResponseBuilder`.
Closes gh-25106
Prior to this commit, if an instance of XStreamMarshaller was used
concurrently from multiple threads without having first invoked the
afterPropertiesSet() method, the private `xstream` field could be
initialized multiple times resulting in a ConcurrentModificationException
in XStream's internal DefaultConverterLookup.
This commit fixes these concurrency issues by making the `xstream` field
volatile and by implementing a double-checked locking algorithm in
getXStream() to avoid concurrent instance creation.
Closes gh-25017
According to the Javadoc for ServletRequest's getServerName() method,
when the `Host` header is set, the server name is "the value of the
part before ':' in the Host header value ...". For a value representing
an IPV6 address such as `[::ffff:abcd:abcd]`, the enclosing square
brackets should therefore not be stripped from the enclosed IPV6
address.
However, the changes made in conjunction with gh-16704 introduced a
regression in Spring Framework 4.1 for the getServerName() method in
MockHttpServletRequest by stripping the enclosing brackets from the
IPV6 address in the `Host` header. Similarly, the changes made in
conjunction with gh-20686 introduced a regression in Spring Framework
4.3.13 and 5.0.2 in the getRequestURL() method in
MockHttpServletRequest by delegating to the getServerName() method
which strips the enclosing brackets.
This commit fixes the implementation of getServerName() so that the
enclosing brackets are no longer stripped from an IPV6 address in the
`Host` header. The implementation of getRequestURL() is therefore also
fixed.
In addition, in order to avoid a NullPointerException, the
implementations of getServerName() and getServerPort() now assert that
an IPV6 address present in the `Host` header correctly contains an
opening and closing bracket and throw an IllegalStateException if that
is not the case.
Closes gh-24916
This commit changes the way two RouterFunctions are composed in
WebFlux.fn. Prior to this commit, two were composed with
`switchIfEmpty()`, switching from the first to the second route if the
first did not provide an element.
After this commit, two router functions are compose using `concat`,
which results in a smaller stack trace.
See gh-24652
