Using RingLibCurl

In this chapter we will learn about using RingLibCurl

Get Request

Example:

load "libcurl.ring"

curl = curl_easy_init()

curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1)
curl_easy_setopt(curl, CURLOPT_URL, "http://ring-lang.sf.net")

curl_easy_perform(curl)

curl_easy_cleanup(curl)

Post Request

Example:

load "libcurl.ring"

curl = curl_easy_init()

cPostThis = "page=4&Number1=4&Number2=5"
curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/ringapp/index.ring?page=3")
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, cPostThis)

curl_easy_perform(curl)

curl_easy_cleanup(curl)

Facebook Login

Example:

load "libcurl.ring"

see "Enter Email : " give $login_email
See "Enter Password : " give $login_pass

curl = curl_easy_init()

curl_easy_setopt(curl, CURLOPT_URL, 'https://www.facebook.com/login.php')
curl_easy_setopt(curl, CURLOPT_POSTFIELDS,'charset_test=j u s t a t e s t'+
' &email='+urlencode($login_email)+'&pass='+
urlencode($login_pass)+'&login=Login')
curl_easy_setopt(curl, CURLOPT_POST, 1)
curl_easy_setopt(curl, CURLOPT_HEADER, 0)
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1)
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, "cookies.txt")
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "cookies.txt")
curl_easy_setopt(curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U;"+
" Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3")
curl_easy_setopt(curl, CURLOPT_REFERER, "http://www.facebook.com")
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, FALSE)
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2)

mylist = curl_slist_append(NULL,'Accept-Charset: utf-8')
curl_slist_append(mylist,'Accept-Language: en-us,en;q=0.7,bn-bd;q=0.3')
curl_slist_append(mylist,'Accept: text/xml,application/xml,'+
'application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5')
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, mylist)

curl_easy_setopt(curl, CURLOPT_COOKIESESSION, false)

curl_easy_perform(curl)

curl_easy_cleanup(curl)

Func URLEncode cStr
        cOut = ""
        for x in cStr
                if isalnum(x)
                        cOut += x
                but x = " "
                        cOut += "+"
                else
                        cOut += "%"+str2hex(x)
                ok
        next
        return cOut

Save Output to String

Example:

load "libcurl.ring"

curl = curl_easy_init()

curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1)
curl_easy_setopt(curl, CURLOPT_URL, "http://ring-lang.sf.net")

cOutput = curl_easy_perform_silent(curl)

See "Output:" + nl
see cOutput

curl_easy_cleanup(curl)