如何获取群组的聊天记录啊

123.56.145.5 [~]$ curl -O -H "share-secret:PKErmrUtEeaNs6Fa8jo8_46GrPo9XuYqHeH0Ybp__vOvGELP" --header "Authorization:Bearer YWMtmEZUzLT5EeaFtenrGh9cHwAAAAAAAAAAAAAAAAAAAAFXzEvwacER5pa2V0ka0jKtAgMAAAFYqCDj3gBPGgAynRyqJmxVa8VHXXZAbhHkYLO

gwq7cTbejVKkb5e-CeA" -H "Accept: application/octet-stream" https://a1.easemob.com/boyakids/boyafm/chatfiles/3ca8307a-b52d-11e6-9d9c-53f3e1f7024a -v

* About to connect() to a1.easemob.com port 443 (#0)

*   Trying 182.92.159.193... connected

* Connected to a1.easemob.com (182.92.159.193) port 443 (#0)

* Initializing NSS with certpath: sql:/etc/pki/nssdb

*   CAfile: /etc/pki/tls/certs/ca-bundle.crt

  CApath: none

* SSL connection using TLS_DHE_RSA_WITH_AES_128_CBC_SHA

* Server certificate:

*       subject: CN=*.easemob.com

*       start date: Nov 30 10:13:15 2015 GMT

*       expire date: Dec 01 11:06:06 2016 GMT

*       common name: *.easemob.com

*       issuer: CN=RapidSSL SHA256 CA - G3,O=GeoTrust Inc.,C=US

> GET /boyakids/boyafm/chatfiles/3ca8307a-b52d-11e6-9d9c-53f3e1f7024a HTTP/1.1

> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.16.2.3 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2

> Host: a1.easemob.com

> share-secret:PKErmrUtEeaNs6Fa8jo8_46GrPo9XuYqHeH0Ybp__vOvGELP

> Authorization:Bearer YWMtmEZUzLT5EeaFtenrGh9cHwAAAAAAAAAAAAAAAAAAAAFXzEvwacER5pa2V0ka0jKtAgMAAAFYqCDj3gBPGgAynRyqJmxVa8VHXXZAbhHkYLOgwq7cTbejVKkb5e-CeA

> Accept: application/octet-stream

> 

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0< HTTP/1.1 404 Not Found