[content_type] => application/json;charset=UTF-8
[http_code] => 200
[header_size] => 500
[request_size] => 292
[filetime] => -1
[ssl_verify_result] => 20
[redirect_count] => 0
[total_time] => 2.078
[namelookup_time] => 0
[connect_time] => 0.016
[pretransfer_time] => 2.047
[size_upload] => 0
[size_download] => 17073
[speed_download] => 8216
[speed_upload] => 0
[download_content_length] => -1
[upload_content_length] => 0
[starttransfer_time] => 2.062
[redirect_time] => 0
可以用tcpdump tshark等工具 抓包分析