https://community.splunk.com/t5/Getting-Data-In/How-to-set-Access-Control-Allow-Header-for-KV-Store-in-Splunk-7/m-p/501988#M85543 <P>I created a web app that runs in Splunk. It is installed in $SPLUNK_HOME/etc/apps . The user can enter some data in a form, and then the data is saved in the KV Store. The data is sent to the kv store by using the javascript method fetch(). This is what a POST request looks like:</P> <P><CODE><BR /> fetch(<BR /> "my_kv_store_url",<BR /> {<BR /> method: "POST",<BR /> mode: "cors",<BR /> credentials: "include",<BR /> headers: {<BR /> "Content-Type": "application/json",<BR /> },<BR /> body: JSON.stringify(formData),<BR /> }<BR /> )<BR /> </CODE></P> <P>The data is successfully added to the kv store in Splunk 8+. It has a <CODE>server.conf</CODE> file which includes these lines:<BR /> <CODE>[httpServer] <BR /> crossOriginSharingHeaders = X-Splunk-Form-Key, Authorization, Accept ,Content-Type, User-Agent,Referer</CODE></P> <P>However, when I run the app in Splunk version 7.x the POST requests are blocked with this error: "Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response". </P> <P>Splunk v7 does not support the crossOriginSharingHeaders rule in server.conf. </P> <P>How can I make this work in Splunk 7x?</P> Thu, 21 May 2020 19:31:52 GMT wstrellis 2020-05-21T19:31:52Z https://community.splunk.com/t5/Getting-Data-In/How-to-set-Access-Control-Allow-Header-for-KV-Store-in-Splunk-7/m-p/501988#M85543 <P>I created a web app that runs in Splunk. It is installed in $SPLUNK_HOME/etc/apps . The user can enter some data in a form, and then the data is saved in the KV Store. The data is sent to the kv store by using the javascript method fetch(). This is what a POST request looks like:</P> <P><CODE><BR /> fetch(<BR /> "my_kv_store_url",<BR /> {<BR /> method: "POST",<BR /> mode: "cors",<BR /> credentials: "include",<BR /> headers: {<BR /> "Content-Type": "application/json",<BR /> },<BR /> body: JSON.stringify(formData),<BR /> }<BR /> )<BR /> </CODE></P> <P>The data is successfully added to the kv store in Splunk 8+. It has a <CODE>server.conf</CODE> file which includes these lines:<BR /> <CODE>[httpServer] <BR /> crossOriginSharingHeaders = X-Splunk-Form-Key, Authorization, Accept ,Content-Type, User-Agent,Referer</CODE></P> <P>However, when I run the app in Splunk version 7.x the POST requests are blocked with this error: "Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response". </P> <P>Splunk v7 does not support the crossOriginSharingHeaders rule in server.conf. </P> <P>How can I make this work in Splunk 7x?</P> Thu, 21 May 2020 19:31:52 GMT https://community.splunk.com/t5/Getting-Data-In/How-to-set-Access-Control-Allow-Header-for-KV-Store-in-Splunk-7/m-p/501988#M85543 wstrellis 2020-05-21T19:31:52Z