curl 'http://localhost:8000/charset/default'
curl 'http://localhost:8000/charset/latin1'
curl 'http://localhost:8000/charset/latin1/uppercase-key'
curl 'http://localhost:8000/charset/gb2312'
curl 'http://localhost:8000/charset/cp1256'
curl 'http://localhost:8000/charset/utf8/uppercase-value'
curl 'http://localhost:8000/charset/utf8/many-keys'
curl 'http://localhost:8000/charset/latin1'
