ios 访问http和https的代码示例

最近做个项目，开始采用的是HTTP协议实现客户端和服务器端的交互，后来需要改成HTTPS协议。在修改的过程中发现了一些问题，解决方案如下：

 

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

事件触发

{

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];

//设置请求方式为get

[request setHTTPMethod:@”GET”];

//添加用户会话id

[request addValue:@”text/html” forHTTPHeaderField:@”Content-Type”];

//连接发送请求

finished = false;

NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];

//堵塞线程，等待结束

while(!finished) {

[[NSRunLoop 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;

}

//下面两段是重点，要服务器端单项HTTPS 验证，iOS 客户端忽略证书验证。

– (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace {

return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];

}

– (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {

NSLog(@”didReceiveAuthenticationChallenge %@ %zd”, [[challenge protectionSpace] authenticationMethod], (ssize_t) [challenge previousFailureCount]);

 

if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]){

[[challenge sender]  useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];

[[challenge sender]  continueWithoutCredentialForAuthenticationChallenge: challenge];

}

}

NSLog(@”get the whole response”);

//[receivedData setLength:0];

}

//处理数据

– (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

{

}

 

大家也可以参考下面一篇文章

关于在UIwebView中访问HTTPS站点的几种方法