gzip

问题 I want to compress files and compute the checksum of the compressed file using python. My first naive attempt was to use 2 functions: def compress_file(input_filename, output_filename): f_in = open(input_filename, 'rb') f_out = gzip.open(output_filename, 'wb') f_out.writelines(f_in) f_out.close() f_in.close() def md5sum(filename): with open(filename) as f: md5 = hashlib.md5(f.read()).hexdigest() return md5 However, it leads to the compressed file being written and then re-read. With many

问题 I am developing an application on windows phone 7.I need to compress/uncompress my data for sending it over tcp sockets. But I have not been able to find any gzip compressor for forward only stream over tcp sockets. please help. 回答1: I created a stripped down version of DotNetZip for this purpose, called DotNetZipLiteWP7. It's available via git here: https://bitbucket.org/jnewc/dotnetziplitewp7 (Also, I prefer DotNetZip to SharpZipLib as the license is more straight-forward for use in

问题 I need a manual compression solution on Apache. My goals: Provide gzip-encoded content on my server along with uncompressed. Files are pre-compressed. Not all files are served compressed. I want to specify these files and the choice isn't type (extension) based. Many content-types (custom ones) are served, and new types are showing up from time to time. Also, file extension doesn't determine if it will be compressed or not ( !!! ). Keep overhead minimal (the less extra headers, the better).

问题 I have a program which makes lots of HttpWebRequests, and I read about using gzip compression to speed up the downloading of the response data. I know what gzip is, and how it works, but I don't know how it works in C#. Let's say I have a simple GET request: HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://google.com"); request.Method = "GET"; WebResponse response = request.GetResponse(); How could I make the response data be compressed in gzip? How can I show the compressed

问题 I'm using AFNetworking2 to download files from my AWS S3 bucket Everything works fine except when I set the Content-Encoding: gzip for the files. AFNetworking fails to download the partial content response coming back from the server and it gives me the following error: Error Domain=NSURLErrorDomain Code=-1015 "cannot decode raw data" UserInfo=0x10d2d8ce0 {NSUnderlyingError=0x10d1ace80 "cannot decode raw data", NSErrorFailingURLStringKey= http://s3.amazonaws.com/awdtest/fullzip.pdf ,

问题 Edit: I really just need to know when a Deflater derived class decides to write header and footer data, and how to exploit those facts. I would really like to do the following: Prime the dictionary for a Deflater derived class with some bytes (I think I got this). Send some data to be compressed to the Deflater derived class (I think I got this). Output all of that compressed data (WITH NO HEADER OR FOOTER DATA) to wherever I want (Not sure how to do this, it would also be okay to have both

问题 I am trying to disable admin port in DropWizard while using 'gzip' server mode. I know this is possible in 'simple' server. Below is the .yml file configuration. - server: type: simple but I want to disable admin port in gzip server mode. server: gzip: bufferSize: 8KiB NOTE: I cant use 'simple' server as we have dependency on 'gzip'. I am out of ideas now any help is really appreciated. 回答1: The default Dropwizard config includes an admin connector. To prevent this, you will need to

问题 I have a big gzip file and I would like to read only parts of it using seek . About the use of seek on gzip files, this page says: The seek() position is relative to the uncompressed data, so the caller does not even need to know that the data file is compressed. Does this imply that seek has to read and decompress the data from the beginning of the file to the target position? 回答1: Yes. This is the code: elif self.mode == READ: if offset < self.offset: # for negative seek, rewind and do

问题 I'm trying to use HttpURLConnection on Gingerbread+ Android devices and am having trouble with the gzip encoding. According to the documentation "In Gingerbread, we added transparent response compression. HttpURLConnection will automatically add this header to outgoing requests, and handle the corresponding response: Accept-Encoding: gzip" The problem is that this is not actually happening. The Accept-Encoding: gzip header is not getting added at all. If I add it manually, I would then expect

问题 I have an ASP.NET 3.5 Website that is running on IIS 7 and I would like to have my static content (like css files, javascript files, etc) gzip compressed as well as my dynamic content (.net pages). The problem is that I need to make sure flv files (flash video files) are not gzip compressed because that causes problems with the flash video player I'm using, Flowplayer. I've added the following line to my web.config which enables compression, but then my flv files are also being gzip