c# - WCF SOAP Service testing - how to test directly from browser -

i have wcf soap service following method:

[operationcontract]  string getdetails(string param1); 

method getdetails returns json string. tested method , works expected. when run service wcf test client , pass in parameter, spits out string in json format. if call service browser:

http://servername/projectname/servicename.svc/getdetails/12345

i error resource not found.

can explain doing wrong?

navigating url in browser performs request on resource. soap methods use post.

if test program fiddler or postman, can test different kind of http methods or post. if perform on url in fiddler same result in browser. performing post give same result wcf test client.