Today's interview asked me how to obtain the Client IP address. I couldn't answer it for a while, sorry.
Get server computer name: page. server. manchinename
Get user information: page. User
Obtain the client computer name: page. Request. userhostname
Obtain the Client IP Address: page. Request. userhostaddress
Obtain the previous IP Address: Document. referrer
C # obtain the IP Address:Using system; <br/> using system. data; <br/> using system. configuration; <br/> using system. collections; <br/> using system. web; <br/> using system. web. security; <br/> using system. web. ui; <br/> using system. web. UI. webcontrols; <br/> using system. web. UI. webcontrols. webparts; <br/> using system. web. UI. htmlcontrols; </P> <p> using system. collections. specialized; </P> <p> Public partial class test_getip: system. web. UI. page <br/>{< br/> protected void page_load (Object sender, eventargs e) <br/>{< br/> response. write (request. userhostaddress); <br/> response. write (request. userhostname); <br/> response. write (server. machinename); <br/> response. write (page. user. identity. name); <br/> // C # method for obtaining the previous IP address <br/> If (request. servervariables ["http_referer"]! = NULL) <br/> response. write (request. servervariables ["http_referer"]. tostring (); <br/> // csdn example <br/> int loop1, loop2; <br/> namevaluecollection Coll; <br/> coll = request. servervariables; <br/> string [] arr1 = Coll. allkeys; <br/> for (loop1 = 0; loop1 <arr1.length; loop1 ++) <br/>{< br/> response. write ("key:" + arr1 [loop1] + "<br>"); <br/> string [] arr2 = Coll. getvalues (arr1 [loop1]); <br/> for (loop2 = 0; loop2 <arr2.length; loop2 ++) <br/>{ <br/> response. write ("value" + loop2 + ":" + server. htmlencode (arr2 [loop2]) + "<br> "); <br/>}</P> <p >}< br/>JS get IP:<! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <br/> <HTML xmlns = "http://www.w3.org/1999/xhtml"> <br/> <pead> <br/> <title> method for obtaining IP addresses using JavaScript </title> <br/> <SCRIPT type = "text/JavaScript"> <br/> function f () {<br/> alert (1); <br/>}< br/> // delegate similar to C, use the function name as the parameter <br/> function F1 (m) {<br/> M (); <br/>}< br/> document. onclick = function () {<br/> F1 (f); <br/> // obtain the previous IP address <br/> alert (getlocalipaddress ()); <br/> alert (document. referrer ); <br/>}< br/> // choose security> ActiveX Control and plug-in from Internet Options> <br/> // no mark initialize ActiveX controls for security and run scripts. set to enable. <br/> // This method is not successful. <br/> function getlocalipaddress () {<br/> var OBJ = NULL; <br/> var rslt = ""; <br/> try <br/> {<br/> OBJ = new activexobject ("rcbdyctl. setting "); <br/> rslt = obj. getipaddress; <br/> OBJ = NULL; <br/>}< br/> catch (E) <br/>{< br/> // exception <br/>}</P> <p> return rslt; <br/>}< br/> </SCRIPT> <br/> </pead> <br/> <body> <br/> <a href = "getip. aspx "> getip </a> <br/> </body> <br/> </ptml>
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
