文字识别OCR里行驶证OCR识别服务，直接请求是正常的，用squid代理就失败是为什么？

文字识别OCR里行驶证OCR识别服务，直接请求是正常的，用squid代理就失败，使用“curl -I -v https:// driving.market.alicloudapi.com/rest/160601/ocr/ocr_vehicle.json”
返回

About to connect() to proxy 172.16.252.43 port 5050 (#0)
Trying 172.16.252.43...
Connected to 172.16.252.43 (172.16.252.43) port 5050 (#0)
Establish HTTP proxy tunnel to driving.market.alicloudapi.com:443

CONNECT driving.market.alicloudapi.com:443 HTTP/1.1
Host: driving.market.alicloudapi.com:443
User-Agent: curl/7.29.0
Proxy-Connection: Keep-Alive

< HTTP/1.1 200 Connection established
HTTP/1.1 200 Connection established
<
Proxy replied OK to CONNECT request
Initializing NSS with certpath: sql:/etc/pki/nssdb
CAfile: /etc/pki/tls/certs/ca-bundle.crt
CApath: none
SSL connection using TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Server certificate:
subject: CN=*.market.alicloudapi.com,O="Alibaba (China) Technology Co., Ltd.",L=HangZhou,ST=ZheJiang,C=CN
start date: Aug 04 05:16:02 2023 GMT
expire date: Sep 04 05:16:01 2024 GMT
common name: *.market.alicloudapi.com
issuer: CN=GlobalSign Organization Validation CA - SHA256 - G3,O=GlobalSign nv-sa,C=BE

HEAD /rest/160601/ocr/ocr_vehicle.json HTTP/1.1
User-Agent: curl/7.29.0
Host: driving.market.alicloudapi.com
Accept: /

< HTTP/1.1 404 Not Found
HTTP/1.1 404 Not Found
< Date: Wed, 10 Jan 2024 02:47:35 GMT
Date: Wed, 10 Jan 2024 02:47:35 GMT
< Content-Type: application/oct-stream
Content-Type: application/oct-stream
< Content-Length: 0
Content-Length: 0
< Connection: keep-alive
Connection: keep-alive
< Keep-Alive: timeout=25
Keep-Alive: timeout=25
< X-Ca-Error-Message: API not found with HEAD /rest/160601/ocr/ocr_vehicle.json
X-Ca-Error-Message: API not found with HEAD /rest/160601/ocr/ocr_vehicle.json
< Server: Kaede/3.5.3.804 (hz00p77mm)
Server: Kaede/3.5.3.804 (hz00p77mm)
< X-Ca-Error-Code: I404NF
X-Ca-Error-Code: I404NF
< X-Ca-Request-Id: 013A68BC-18D2-4AE5-8BBC-0BA45CE27355
X-Ca-Request-Id: 013A68BC-18D2-4AE5-8BBC-0BA45CE27355