Tcl

Receive a Block of Bytes to a File

Demonstrates Socket.ReceiveBytesToFile, which receives one available block of bytes and appends it to a file.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Background. Any buffered data is written first; otherwise a single receive operation is performed. The method appends, so repeated calls accumulate received blocks in the file.

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Tcl


load ./chilkat.dll

set success 0

set socket [new_CkSocket]

#  Connect to the server using TLS.
set bTls 1
set maxWaitMs 5000
set success [CkSocket_Connect $socket "example.com" 5000 $bTls $maxWaitMs]
if {$success == 0} then {
    puts [CkSocket_lastErrorText $socket]
    delete_CkSocket $socket
    exit
}

#  The file path is relative to the application's current working directory.  An absolute path
#  may also be used.  Supply the path appropriate to your own environment.

#  Receive one available block of bytes and append it to a file.  If bytes are already buffered,
#  they are used first; otherwise a single receive operation is performed.
set success [CkSocket_ReceiveBytesToFile $socket "qa_output/received.dat"]
if {$success == 0} then {
    puts [CkSocket_lastErrorText $socket]
    delete_CkSocket $socket
    exit
}

puts "Received block appended to the file."

delete_CkSocket $socket