TIPS - Curl : Différence entre versions
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= Curl calls = | = Curl calls = | ||
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| + | == Curl with verbose result == | ||
| + | |||
| + | Curl option: -v (or --verbose). | ||
== Fake the DNS resolution == | == Fake the DNS resolution == | ||
| Ligne 11 : | Ligne 15 : | ||
* your website is behind a reverse proxy, but you want to access the underlying web service with appropriate host header in your request. | * your website is behind a reverse proxy, but you want to access the underlying web service with appropriate host header in your request. | ||
| − | curl -- | + | curl --resolve <my.domain>:443:<IP> https://<my.domain>[/<my_uri>] |
| + | |||
| + | == Add a request header == | ||
| + | |||
| + | Curl option: -H (or --header). | ||
| + | |||
| + | Sample call: | ||
| + | |||
| + | curl -IL -H '<header name>:<header value>' https://<URL to curl> | ||
| + | |||
| + | == Only request response headers == | ||
| + | |||
| + | Curl option: -I | ||
| + | |||
| + | See previous sample. | ||
| + | |||
| + | == Request CORS headers == | ||
| + | |||
| + | curl -I -X OPTIONS -H "Origin: http://EXAMPLE.COM" -H 'Access-Control-Request-Method: GET' http://EXAMPLE.COM/SOMETHING 2>&1 | grep 'Access-Control-Allow-Origin' | ||
| + | |||
| + | == Don't check SSL certificate == | ||
| + | |||
| + | This option may be useful in some situations: | ||
| + | * SSL deep inspection on the path, recyphering being done with a self-signed certificate or a cert emitted by a CA not present in your local CA store. | ||
| + | * Test a WAF or reverse proxy configuration not totally ready regarding SSL configuration. | ||
| + | |||
| + | Curl option: -k (or --insecure). | ||
| + | |||
| + | Sample: | ||
| + | |||
| + | curl -k https://<IP> -I -v --header 'Host:<the real hostname your request for>' | ||
| + | |||
| + | [[Category:Howto]] | ||
| + | [[Category:Linux]] | ||
| + | [[Category:Web]] | ||
| + | [[Category:Troubleshooting]] | ||
Version actuelle datée du 25 septembre 2023 à 14:51
Sommaire
Introduction
This article lists a few ways to call curl, depending on your need.
Curl calls
Curl with verbose result
Curl option: -v (or --verbose).
Fake the DNS resolution
Use case:
- your website is behind a WAF and the FQDN resolves to it instead of the web server directly (the origin).
- your website is behind a reverse proxy, but you want to access the underlying web service with appropriate host header in your request.
curl --resolve <my.domain>:443:<IP> https://<my.domain>[/<my_uri>]
Add a request header
Curl option: -H (or --header).
Sample call:
curl -IL -H '<header name>:<header value>' https://<URL to curl>
Only request response headers
Curl option: -I
See previous sample.
Request CORS headers
curl -I -X OPTIONS -H "Origin: http://EXAMPLE.COM" -H 'Access-Control-Request-Method: GET' http://EXAMPLE.COM/SOMETHING 2>&1 | grep 'Access-Control-Allow-Origin'
Don't check SSL certificate
This option may be useful in some situations:
- SSL deep inspection on the path, recyphering being done with a self-signed certificate or a cert emitted by a CA not present in your local CA store.
- Test a WAF or reverse proxy configuration not totally ready regarding SSL configuration.
Curl option: -k (or --insecure).
Sample:
curl -k https://<IP> -I -v --header 'Host:<the real hostname your request for>'
