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--- curl [2017/10/12 13:21]
+++ curl [2021/04/05 11:23] (current)
@@ Line 1: / Line 1: @@
+====== cURL ======
+cURL is a program for making HTTP request, f. e. accessing a web site or calling a web service.
+===== Basic Auth =====
+In Basic Auth the username and password Base64 encoded and added to the HTTP headers. cURL can do this easily with an option.
+  curl --user my_user:my_pass http://localhost/my/service
+===== Response Format =====
+When using web services one can add a request for a specific format for the response using HTTP headers.
+  curl http://localhost/my/service -H "Accept: application/json"
+===== Passing Form Parameter =====
+  curl -d "name=value&another=value" http://localhost/my/service
+===== Passing Query Parameter =====
+Query parameter are passed in the url by adding key/value pairs after the ? sign in the url. Example:
+  curl http://localhost/resource?q=query_expression&start=0&rows=0
+If this url is used with curl than the parameters //start// and //rows// are being dropped and the curl process is executed in the background. Why? Because the first & tells the shell to execute the command in the background. The shell won't recognize it as part of the url.
+Solution: Use double quotes.
+  curl "http://localhost/resource?q=query_expression&start=0&rows=0"
+===== Passing Data from File =====
+Instead of passing the post data from the command line it can also be read from a file:
+  curl http://localhost/resource -X POST -d @data.json -H "Content-Type: application/json"