Finished by https 206 code NSString *oldRange = urlSchemeTask.request.allHTTPHeaderFields[@"Range"]; oldRange = [oldRange substringFromIndex:6]; NSArray *array = [oldRange componentsSeparatedByString:@"-"]; NSInteger first = [[array firstObject] intValue]; NSInteger last = [[array lastObject] intValue]; NSLog(@"====> startURLSchemeTask2 response oldRange %@", oldRange); NSRange newVideoRange = NSMakeRange(first, last - first + 1); NSData *newVideoData = [videoData subdataWithRange:newVideoRange]; // 构造响应 NSError *error = nil; NSHTTPURLResponse *response = [[NSHTTPURLResponse alloc] initWithURL:requestURL statusCode:206 HTTPVersion:nil headerFields:@{ @"Content-Range": [NSString stringWithFormat:@"bytes %lu-%lu/%lu", (unsigned long)first, (unsigned long)last, (unsigned long)videoData.length], @"Content-Type": @"video/mp4", @"Content-Length": [NSString stringWithFormat:@"%@", @(last - first + 1)], @"Access-Control-Allow-Origin": @"*" }];