.net - How to compress http request on the fly and without loading compressed buffer in memory -

i need send voluminous data in http post request server supporting gziped encoded requests.

starting simple

public async task<string> dopost(httpcontent content) {   httpclient client = new httpclient();   httpresponsemessage response = await client.postasync("http://myuri", content);    response.ensuresuccessstatuscode();   return await response.content.readasstringasync(); } 

i've added pre compression

public async task<string> dopost(httpcontent content, bool compress) {   if (compress)      content= await compressasync(content);    return await dopost(content); }  private static async task<streamcontent> compressasync(httpcontent content) {   memorystream ms = new memorystream();   using (gzipstream gzipstream = new gzipstream(ms, compressionmode.compress, true))   {     await content.copytoasync(gzipstream);     await gzipstream.flushasync();   }    ms.position = 0;   streamcontent compressedstreamcontent = new streamcontent(ms);   compressedstreamcontent.headers.contenttype = content.headers.contenttype;   compressedstreamcontent.headers.add("content-encoding", "gzip");    return compressedstreamcontent; } 

it works compress data completly loaded memory before sending request. would able compress data on fly during sending in streaming way.

to it, i've tried following code:

private static async task<httpcontent> compressasync2(httpcontent content) {   pushstreamcontent pushstreamcontent = new pushstreamcontent(async (stream, content2, transport) =>   {     using (gzipstream gzipstream = new gzipstream(stream, compressionmode.compress, true))     {       try       {         await content.copytoasync(gzipstream);         await gzipstream.flushasync();       }       catch (exception exception)       {         throw;       }     }   });   pushstreamcontent.headers.contenttype = content.headers.contenttype;   pushstreamcontent.headers.add("content-encoding", "gzip");    return pushstreamcontent; } 

but never goes out of copytoasync(gzipstream). flushasync never executed , no exception thrown , fiddler don't see post started.

my questions are:

• why compressasync2 doesn't work?
• how compress on fly during sending , without loading compressed buffer in memory?

any appreciated.

try using compressedcontent class webapicontrib https://github.com/webapicontrib/webapicontrib/blob/master/src/webapicontrib/content/compressedcontent.cs

public async task<string> dopost(httpcontent content) {   httpclient client = new httpclient();   httpresponsemessage response = await client.postasync("http://myuri", new compressedcontent(content,"gzip"));    response.ensuresuccessstatuscode();   return await response.content.readasstringasync(); } 

p.s. stream content on .net 4.5. .net 4 version of httpwebrequest buffers sent content.

p.p.s. creating new httpclient each request not best way use httpclient. doing force new tcp connection created each request.