Is this technical solution reasonable about WKWebView on cross-domain issues ?
Hi,all
My project use WKWebView to load offline package, such as .html/.css/.js,and also request some resources from remote server to update pages. So there is a cross-domain problem with local file(file://***) and remote domain (https://***), is this following technical solution reasonable to fix this problem:
1. Create a custom URLSchemeHandler which conforms to WKURLSchemeHandler
2.Unify local file and remote domain request to https request
3. Hook WKWebView https request
4. Implement WKURLSchemeHandler delegate method
(void)webView:(WKWebView *)webView startURLSchemeTask:(id)urlSchemeTask {
NSURL *url = urlSchemeTask.request.URL;
if ([url.pathExtension isEqualToString:@"html"]) {
NSData *data = [[NSData alloc] initWithContentsOfFile:localFilePath];
NSMutableDictionary resHeader = [NSMutableDictionary new];
[resHeader setValue:@"" forKey:@"Access-Control-Allow-Origin"];
[resHeader setValue:@"charset=UTF-8" forKey:@"Content-Type"];
[resHeader setValue:@"text/html" forKey:@"Content-Type"];
NSHTTPURLResponse *response = [[NSHTTPURLResponse alloc]
initWithURL:url statusCode:200 HTTPVersion:@"HTTP/1.1" headerFields:resHeader];
[urlSchemeTask didReceiveResponse:response];
[urlSchemeTask didReceiveData:data];
[urlSchemeTask didFinish];
} else {
NSURLSession *defaultSession = [NSURLSession sharedSession];
NSURLSessionTask *dataTask = [defaultSession dataTaskWithRequest:urlSchemeTask.request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
[urlSchemeTask didReceiveResponse:response];
[urlSchemeTask didReceiveData:data];
[urlSchemeTask didFinish];
}];
[dataTask resume];
}
}
Is this technical solution reasonable? and is there any issues that I haven't considered?
Sincerely,
Looking forward to your reply