書き込みデータはこうなってる

POST /test/bbs.cgi HTTP/1.0
Referer: http://egg.5ch.net/software/
User-Agent: Monazilla/1.00 2chMate/0.8.10.153 Dalvik/2.1.0 (Linux; U; Android 12; XIG01 Build/BBQ3.200717.002)
X-2ch-UA: 2chMate/0.8.10.153
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Content-Length: 116
X-PostSig: f62a601301d01d1a0c1d29cf4a71fd18219153406521a35e3a62f0329ed8d44a
X-APIKey: 8yoe***********************Dqn
X-PostNonce: 1659561600.435
X-MonaKey: 17183264-3967-3679-4600-638845722161
Host: egg.5ch.net
Connection: close
Cookie: yuki=akari

FROM=&mail=sage&MESSAGE=test&bbs=software&time=1659561600&key=1658940255&submit=%E6%9B%B8%E3%81%8D%E8%BE%BC%E3%82%80