c# - Asynchronously send / receive fixed amount of data using tcp socket -

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in application asynchronous communication on tcp socket.

i don't fact send , receive operations (sync or async) of socket class allowed finish before requested number of bytes transmitted. example: when want read x bytes socket, don't want care how many read operations needed achieve (in application logic). want notified when it's finished (or when error occured).

it nice have beginsendfixed, endsendfixed, beginreceivefixed , endreceivefixed. behave beginsend, endsend, beginreceive, endreceive, not call callback before requested number of bytes transmitted.

i'm thinking implementing myself, based on:

http://msdn.microsoft.com/en-us/magazine/cc163467.aspx

in dotaskhelper function call many (synchronous) send or receive until data transmitted.

is way go or there different (better) way hide need multiple sends / receives application logic?

i recommend using taskcompletionsource class this. has advantage of not burning thread waiting i/o. easier wrap existing (asynchronous) apis tasks first, , create api using taskcompletionsource.

note taskcompletionsource added in .net 4. if you're not on platform yet, recommend marshaling completion routines ui thread (which can done using event-based asynchronous pattern socket wrappers in nito.async.sockets), , putting them through parser specific protocol (an example of on blog).


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