HTTP and HTTPS access in IOS

Recently, I started to use the HTTP protocol to implement interaction between the client and the server. Later I needed to change it to the HTTPS protocol. Some problems were found during the modification. The solution is as follows:

 

HTTP:

Nsstring * urlstring = [nsstring stringwithformat: @ "https: // 127.0.0.1/default. aspx? User = % @ ", @" 111 "];

Nsmutableurlrequest * request = [[nsmutableurlrequest alloc] init] autorelease];

[Request seturl: [nsurl urlwithstring: urlstring];

[Request sethttpmethod: @ "get"];

Nshttpurlresponse * urlresponse = nil;

Nserror * error = [[nserror alloc] init];

Nsdata * responsedata = [nsurlconnection sendsynchronousrequest: Request returningresponse: & urlresponse error: & error];

Nsmutablestring * result = [[nsmutablestring alloc] initwithdata: responsedata encoding: nsutf8stringencoding];

Nslog (@ "The result string is: % @", result );

 

 HTTPS

Event triggering

{

Nsstring * urlstring = [nsstring stringwithformat: @ "https: // 127.0.0.1/default. aspx? User = % @ ", @" 111 "];

Nsmutableurlrequest * request = [[nsmutableurlrequest alloc] initwithurl: [nsurl urlwithstring: urlstring] cachepolicy: nsurlrequestreloadignoringlocalcachedata timeoutinterval: 5];

// Set the request method to get

[Request sethttpmethod: @ "get"];

// Add the user session ID

[Request addvalue: @ "text/html" forhttpheaderfield: @ "Content-Type"];

// Connection sends the request

Finished = false;

Nsurlconnection * conn = [[nsurlconnection alloc] initwithrequest: Request delegate: Self];

// Clog the thread and wait for the end

While (! Finished ){

[[Nsunloop currentrunloop] runmode: nsdefaultrunloopmode beforedate: [nsdate distantfuture];

}

}

 

-(Void) connection :( nsurlconnection *) connection didreceiveresponse :( nsurlresponse *) Response

{}

 

-(Void) connectiondidfinishloading :( nsurlconnection *) Connection

{

// [_ Waitingdialog dismisswithclickedbuttonindex: 0 animated: No];

[Connection release];

}

-(Void) connection :( nsurlconnection *) connection didfailwitherror :( nserror *) Error

{

}

-(Bool) connectionshouldusecredentialstorage :( nsurlconnection *) connection {

Return no;

}

// The following two sections are important. server-side individual HTTPS verification is required, and the IOS client ignores certificate verification.

-(Bool) connection :( nsurlconnection *) connection canauthenticateagainstprotectionspace :( nsurlprotectionspace *) protectionspace {

Return [protectionspace. authenticationmethod isinclutostring: nsurlauthenticationmethodservertrust];

}

-(Void) connection :( nsurlconnection *) connection didreceiveauthenticationchallenge :( nsurlauthenticationchallenge *) challenge {

Nslog (@ "didreceiveauthenticationchallenge % @ % ZD", [[challenge protectionspace] authenticationmethod], (ssize_t) [challenge previusfailurecount]);

If ([challenge. protectionspace. authenticationmethod isinclutostring: nsurlauthenticationmethodservertrust]) {

[[Challenge sender] usecredential: [nsurlcredential credentialfortrust: Challenge. protectionspace. servertrust] forauthenticationchallenge: Challenge];

[[Challenge sender] continuewithoutcredentialforauthenticationchallenge: Challenge];

}

}

Nslog (@ "get the whole response ");

// [Receiveddata setlength: 0];

}

// Process data

-(Void) connection :( nsurlconnection *) connection didreceivedata :( nsdata *) data

{

}

 

You can also refer to the following article.

Methods for accessing HTTPS sites in uiwebview