[Webkit-unassigned] [Bug 137718] New: URLs that start with http:/// and https:/// lose two slashes when parsed, causing assertion failure and inconsistent behavior

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=137718

           Summary: URLs that start with http:/// and https:/// lose two
                    slashes when parsed, causing assertion failure and
                    inconsistent behavior
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mitz at webkit.org
                CC: ap at webkit.org


<rdar://problem/18029894>

Given a URL that starts with http:/// or https:///, URL::parse() removes exactly two slashes from the URL. There are a couple of undesirable side effects to this:
1. It makes parsing non-idempotent for such URL with four or more slashes, which in turn causes an assertion failure in the already-parsed URL constructor when trying to follow <a href="http:////webkit.org">
2. If the URL has sufficiently many slashes after the colon, then even after repeated reparsing it will contain more than two, and therefore CFNetwork will consider its host to be localhost, which is incorrect

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