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Invalid URL in CRAN checks

I'm trying to update a package in CRAN and I get these errors:

Found the following (possibly) invalid URLs:
  URL: https://doi.org/10.1175/1520-0469(1985)042<0217:OTTDPO>2.0.CO;2
    From: man/EPflux.Rd
    Status: Error
    Message: libcurl error code 35:
        schannel: next InitializeSecurityContext failed: SEC_E_ILLEGAL_MESSAGE (0x80090326) - This error usually occurs when a fatal SSL/TLS alert is received (e.g. handshake failed).

The URLs are valid and are actually created with the \doi{} macro (e.g. \doi{10.1175/1520-0469(1985)042<0217:OTTDPO>2.0.CO;2})

Even using encoded URLs (per stevec's suggestion)fail with the same error:

Found the following (possibly) invalid URLs:
  URL: https://doi.org/10.1175/1520-0469(1985)042%3C0217:OTTDPO%3E2.0.CO;2
    From: man/EPflux.Rd
    Status: Error
    Message: libcurl error code 35:
        schannel: next InitializeSecurityContext failed: SEC_E_ILLEGAL_MESSAGE (0x80090326) - This error usually occurs when a fatal SSL/TLS alert is received (e.g. handshake failed).

Any advice on how to solve this?

Solution

  • Hadley suggested that those notes can be safely ignored. I sent the package to CRAN and was accepted.

    The answer, then, is to just ignore these Notes.