Missing post body data on Safari 9.1

[hanchao]

fprintf(stdout, "%s\n",buff);
Request *req = requestNew(buff);

Safari 9.1

POST /login/ HTTP/1.1
Host: 127.0.0.1:8080
Content-Type: application/x-www-form-urlencoded
Origin: http://127.0.0.1:8080
Content-Length: 34
Connection: keep-alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/601.5.17 (KHTML, like Gecko) Version/9.1 Safari/601.5.17
Referer: http://127.0.0.1:8080/login/
Accept-Language: zh-cn
Accept-Encoding: gzip, deflate

Chrome 43

POST /login/ HTTP/1.1
Host: 127.0.0.1:8080
Connection: keep-alive
Content-Length: 34
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://127.0.0.1:8080
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.81 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: http://127.0.0.1:8080/login/
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8,en;q=0.6

username=hanchao&password=19860123