Made the requested changes but not seeing a return back to the main loop. Also
put an echo after calling the serve() function, - echo "Returning to the main
loop.". Not seeing that echo either.
The loop comes to an end but still not able to get back to the main program
loop.
Updated Client-
import os
import net
import strutils
import asyncnet, asyncdispatch, parseutils
proc processClient*(client: AsyncSocket, fileName: string) {.async.} =
var
fileSize: int
counter: int
while not client.isClosed:
echo "Wait file"
var file = open(fileName, fmWrite )
let sizeFileString = await client.recvLine()
discard sizeFileString.parseInt(fileSize)
echo "File Size is " & $fileSize
counter = 0
var dataFut = client.recv(4000)
while true:
yield dataFut
echo "Counter : " & $counter
if counter >= fileSize:
break
else:
if dataFut.finished:
let data = dataFut.read
if data != "":
counter += data.len
file.write(data)
dataFut = client.recv(4000)
else:
echo "No data"
break
else:
echo "Exit"
break
echo "End of file"
file.close
break
client.close()
proc serve*(fileName: string) {.async.} =
var server = newAsyncSocket(buffered=false)
server.setSockOpt(OptReuseAddr, true)
server.bindAddr(Port(5555))
server.listen()
echo "Server running!"
while true:
let client = await server.accept()
echo "New client connected"
asyncCheck processClient(client, fileName)
var server: Socket = newSocket()
server.bindAddr(Port(443))
server.listen()
stdout.writeLine("The Sever is now Listening for incoming connections ... ")
var client: Socket = new(Socket)
server.accept(client)
stdout.writeLine("The connection has been established.")
echo "\n"
proc mainLoop() {.async.} =
while true:
stdout.write("Enter a command > ")
let input: string = stdin.readLine()
echo "\n"
if input.startsWith("cmd ") or input.startsWith("exit ") or
input.startsWith("getsize ") or input.startsWith("path ") or
input.startsWith("screenshot") or input.startsWith("download "):
client.send(input & "\r\n")
if input.startsWith("download "):
var get_name = input[0..^1]
let (dirPath, fileName) = splitPath(get_name)
echo "THIS IS WHAT IS BEING PASSED TO THE FUNCTION: ",
fileName
waitFor serve(fileName)
echo "Returning back to the main loop."
else:
stdout.writeLine("Command not allowed")
continue
let message: string = client.recvLine()
if ":" in message:
for x in message.split(";"):
stdout.writeLine(x)
echo "\n"
else:
stdout.writeLine(message)
echo "\n"
#client.close()
waitFor mainLoop()
Run
The Server code has not been changed.
Here is the current output of both the client and server -
Client Output -
C:\Users\nater\Desktop\nim>client
The Sever is now Listening for incoming connections ...
The connection has been established.
Enter a command > download c:\users\nater\desktop\spring.jpg
THIS IS WHAT IS BEING PASSED TO THE FUNCTION: spring.jpg
Client running!
New client connected
Wait file
File Size is 894902
Counter : 0
Counter : 4000
Counter : 8000
Counter : 12000
Counter : 16000
Counter : 20000
Counter : 24000
Counter : 28000
Counter : 32000
Counter : 36000
Counter : 40000
Counter : 44000
Counter : 48000
Counter : 52000
Counter : 56000
Counter : 60000
Counter : 64000
Counter : 68000
Counter : 72000
Counter : 76000
Counter : 80000
Counter : 84000
Counter : 88000
Counter : 92000
Counter : 96000
Counter : 100000
Counter : 104000
Counter : 108000
Counter : 112000
Counter : 116000
Counter : 120000
Counter : 124000
Counter : 128000
Counter : 132000
Counter : 136000
Counter : 140000
Counter : 144000
Counter : 148000
Counter : 152000
Counter : 156000
Counter : 160000
Counter : 164000
Counter : 168000
Counter : 172000
Counter : 176000
Counter : 180000
Counter : 184000
Counter : 188000
Counter : 192000
Counter : 196000
Counter : 200000
Counter : 204000
Counter : 208000
Counter : 212000
Counter : 216000
Counter : 220000
Counter : 224000
Counter : 228000
Counter : 232000
Counter : 236000
Counter : 240000
Counter : 244000
Counter : 248000
Counter : 252000
Counter : 256000
Counter : 260000
Counter : 264000
Counter : 268000
Counter : 272000
Counter : 276000
Counter : 280000
Counter : 284000
Counter : 288000
Counter : 292000
Counter : 296000
Counter : 300000
Counter : 304000
Counter : 308000
Counter : 312000
Counter : 316000
Counter : 320000
Counter : 324000
Counter : 328000
Counter : 332000
Counter : 336000
Counter : 340000
Counter : 344000
Counter : 348000
Counter : 352000
Counter : 356000
Counter : 360000
Counter : 364000
Counter : 368000
Counter : 372000
Counter : 376000
Counter : 380000
Counter : 384000
Counter : 388000
Counter : 392000
Counter : 396000
Counter : 400000
Counter : 404000
Counter : 408000
Counter : 412000
Counter : 416000
Counter : 420000
Counter : 424000
Counter : 428000
Counter : 432000
Counter : 436000
Counter : 440000
Counter : 444000
Counter : 448000
Counter : 452000
Counter : 456000
Counter : 460000
Counter : 464000
Counter : 468000
Counter : 472000
Counter : 476000
Counter : 480000
Counter : 484000
Counter : 488000
Counter : 492000
Counter : 496000
Counter : 500000
Counter : 504000
Counter : 508000
Counter : 512000
Counter : 516000
Counter : 520000
Counter : 524000
Counter : 528000
Counter : 532000
Counter : 536000
Counter : 540000
Counter : 544000
Counter : 548000
Counter : 552000
Counter : 556000
Counter : 560000
Counter : 564000
Counter : 568000
Counter : 572000
Counter : 576000
Counter : 580000
Counter : 584000
Counter : 588000
Counter : 592000
Counter : 596000
Counter : 600000
Counter : 604000
Counter : 608000
Counter : 612000
Counter : 616000
Counter : 620000
Counter : 624000
Counter : 628000
Counter : 632000
Counter : 636000
Counter : 640000
Counter : 644000
Counter : 648000
Counter : 652000
Counter : 656000
Counter : 660000
Counter : 664000
Counter : 668000
Counter : 672000
Counter : 676000
Counter : 680000
Counter : 684000
Counter : 688000
Counter : 692000
Counter : 696000
Counter : 700000
Counter : 704000
Counter : 708000
Counter : 712000
Counter : 716000
Counter : 720000
Counter : 724000
Counter : 728000
Counter : 732000
Counter : 736000
Counter : 740000
Counter : 744000
Counter : 748000
Counter : 752000
Counter : 756000
Counter : 760000
Counter : 764000
Counter : 768000
Counter : 772000
Counter : 776000
Counter : 780000
Counter : 784000
Counter : 788000
Counter : 792000
Counter : 796000
Counter : 800000
Counter : 804000
Counter : 808000
Counter : 812000
Counter : 816000
Counter : 820000
Counter : 824000
Counter : 828000
Counter : 832000
Counter : 836000
Counter : 840000
Counter : 844000
Counter : 848000
Counter : 852000
Counter : 856000
Counter : 860000
Counter : 864000
Counter : 868000
Counter : 872000
Counter : 876000
Counter : 880000
Counter : 884000
Counter : 888000
Counter : 892000
Counter : 894902
End of file
Server Output -
C:\Users\nater\Desktop\nim>Server
Client: connected to server on address 127.0.0.1:5555
This is the file name: c:\users\nater\desktop\spring.jpg
File size is :894902
Send file size
Pull ...
Send data size : 4000
Send data size : 4000
Send data size : 4000
Send data size : 4000
Send data size : 4000
Send data size : 4000
Send data size : 4000
Send data size : 4000
Send data size : 4000
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Send data size : 4000
Send data size : 4000
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Send data size : 4000
Send data size : 4000
Send data size : 4000
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Send data size : 4000
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Send data size : 4000
Send data size : 4000
Send data size : 4000
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Send data size : 4000
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Send data size : 4000
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Send data size : 4000
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Send data size : 4000
Send data size : 4000
Send data size : 4000
Send data size : 2902
End of file
Run
Notice the server sends chunks of 4000 to the client and at the end it breaks
out of the loop and shows "End of file"
The server is nearly the same receiving an iteration of 4000 and when the file
chunks have finished, it breaks out of the loop and shows "End of file".
However, the echo statement in the client
waitFor serve(fileName)
echo "Returning back to the main loop."
Run
never shows the "Returning back to the main loop.". And there is no ability to
input text, as the cursor will not take input. Please help to resolve.
