Allow parsing of media types with single-quotes [SPR-9734]

[spring-projects-issues]

Igor Mihalik opened SPR-9734 and commented

MediaType can only parse double-quoted parameters without raising an IllegalArgumentException. This is based on comments in #13557

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Affects: 3.1.2

Reference URL: 7cdc534

Issue Links:

• #13557 Accept header with quoted parameter causes IllegalArgumentException in HttpHeaders.getContentType for the outputMessage ("depends on")

Referenced from: commits 8b09b52

0 votes, 5 watchers

[spring-projects-issues]

Rossen Stoyanchev commented

The fix is already available in the master branch. The following pull request needs to be backported to 3.1.x.

[spring-projects-issues]

Igor Mihalik commented

I just want to point out that single-quoted string is considered a "token" according to RFC HTTP/1.1, not "quoted-string". So I'm not sure about all the consequences this change can cause in terms of regression.

[spring-projects-issues]

Maxim Valyanskiy commented

Igor, single quotes in "Accept" header is quite common for Android 2.x web clients. Current version of Spring WebMVC denies all requests from that browsers. I think it is too big penalty for RFC violation. Maybe is is better to ignore all parse errors of Accept header and work as if headers is missing in request.

[spring-projects-issues]

Rossen Stoyanchev commented

I think this is not yet fixed in 3.1.3. The following commit applied a "fix" in master. However as pointed out above, a single quote signifies a token rather than a quoted string. Some further analysis is needed.