Python error: "socket.error: [Errno 11] Resource temporarily unavailable" when sending image
<p>I want to make a program that accesses images from files, encodes them, and sends them to an server.
Than the server is supposed to decode the image, and save it to file.
I tested the image encoding itself, and it worked, so the problem lies in the server and client connection.</p>

<p>Here is the server:</p>

<pre><code>import socket
import errno
import base64

from PIL import Image
import StringIO

def connect(c):
    try:
        image = c.recv(8192)
        return image
    except IOError as e:
        if e.errno == errno.EWOULDBLOCK:
            connect(c)


def Main():
    host = '138.106.180.21'
    port = 12345

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
    s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
    s.bind((host, port))
    s.listen(1)


    while True:

        c, addr = s.accept()
        c.setblocking(0)

        print "Connection from: " + str(addr)

        image = c.recv(8192)#connect(c)

        imgname = 'test.png'

        fh = open(imgname, "wb")
        if image == 'cusdom_image':
            with open('images.png', "rb") as imageFile:
                image = ''
                image = base64.b64encode(imageFile.read())
                print image
        fh.write(image.decode('base64'))
        fh.close()


if __name__ == '__main__':
    Main()
</code></pre>

<p>And here is the client:</p>

<pre><code>import socket
import base64

from PIL import Image
import StringIO
import os, sys

ip = '138.106.180.21'
port = 12345
print 'Add event executed'
s = socket.socket()
s.connect((ip, port))

image_path = '/home/gilgamesch/Bilder/Bildschirmfoto.png'

print os.getcwd()
olddir = os.getcwd()
os.chdir('/')
print os.getcwd()

if image_path != '':
    with open(image_path, "rb") as imageFile:
        image_data = base64.b64encode(imageFile.read())
        print 'open worked'
else:
    image_data = 'cusdom_image'

os.chdir(olddir)

s.send(image_data)


s.close()
</code></pre>

<p>And the error message is:</p>

<pre><code>Traceback (most recent call last):
  File "imgserv.py", line 49, in &lt;module&gt;
    Main()
  File "imgserv.py", line 34, in Main
    image = c.recv(8192)#connect(c)
socket.error: [Errno 11] Resource temporarily unavailable
</code></pre>