Adding language on POST payloads containing parameters. #61
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It was not easy picking a place for this. If you add it where we already talk about POST-s, it would appear twice (in sync and async). If you add it where we talk about parameter encoding, it would awkwardly sit next to VOTable content.
In the end, I think this location is the least bad one.
Content-wise, I considered whether to warn people that in urlencoded parameters they have to replace + with space and in multipart parameters they don't, but I figured that for almost everyone, this is done by some library. And for that reason, I also don't think we should think about it much more -- unless this is becoming an issue and http server implementations don't necessarily support urlencoded any more. Do we have indications that that is the case?