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POSend multiple data (text and images) to a server through a socket
 

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    <p>I've made a test server in python, which receives a connection through a socket and save png files. But, I want to pass some other data to the server like the file's name, user who send it, etc. But I can't do this, because to receive the data you must inform the number of bytes you are reading in buffer.</p> <p>I've researched a lot, some examples says to use struct and pack all data, but the size of one image to another is different and I can't simply make a struct format, because it will be different for each file I receive.</p> <p>This is what I have working so far:</p> <h3>SERVER</h3> <pre><code>import socket import os import sys FilePath = os.path.realpath(os.path.dirname(sys.argv[0])) s = socket.socket() s.bind(("localhost",8000)) s.listen(5) #Tipo, 5 conexoes no maximo {ao mesmo tempo} i=0 name = 'file_' while (True): sc, address = s.accept() name = 'file_%s' % i f = open(os.path.join(FilePath,'server_received/%s.png'% name) ,'wb') #open as binary data i=i+1 # receives and writes the file l = sc.recv(1024) while (l): f.write(l) l = sc.recv(1024) f.close() sc.close() s.close() </code></pre> <h3>CLIENT</h3> <pre><code>class SendToServer(Thread): def __init__(self, queue, *args, **kwargs): Thread.__init__(self) self.queue = queue self.args = args self.kwargs = kwargs def run(self): try: while not self.queue.empty(): s = socket.socket() s.connect((HOST,PORT)) file_path = self.queue.get() file = open(file_path,'rb') s.send(file_path) l = file.read(1024) while l: s.send(l) l = file.read(1024) self.queue.task_done() s.close() print u"Enviado" except: print u"Sem conexao" #This i Use when I call the Thread: sync= SendToServer(queue) sync.run() </code></pre> <p>This code above is working well, but how can I send more data than just the file? (binary data)</p>
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    1. USFernando Freitas Alves
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