Am 2021-01-21 um 13:20 schrieb Hari Iyer:
Hi, I have filenames with non-ascii characters and this is the code that enables me to encode it in my multipart request: MultipartEntityBuilder.create().setCharset(StandardCharsets.UTF_8).setLaxMode(); While this generates the content disposition (for filename Mädchen) correctly as: Content-Disposition: form-data; name="M[0xc3][0xa4]dchen.pdf"; filename="M[0xc3][0xa4]dchen.pdf" It also generates content type with a charset parameter like so: Content-Type: multipart/form-data; boundary=eUBOAfgS-JvSxb2ok4HhwTdwyKWzloz27CnQ0; charset=UTF-8 This request fails with IIS as noted by many others (61384 – Adding charset to multipart/form-data content type irritates IIS (apache.org)<https://bz.apache.org/bugzilla/show_bug.cgi?id=61384>). How do I get around this? Removing the charset prevents the encoding of the filename, adding it breaks IIS. I am using httpclient 4.5.11. Thanks, Hari.
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