def run(self):
command = str(read_from_socket(self._socket, 4))
if command == "ARET":
klog("Received ARET")
chunk_number = int(read_from_socket(self._socket, 6))
try:
klog("Download started")
klog("chunk number: " + str(chunk_number))
newFile = open(DOWNLOAD_FOLDER+"/"+self._filename, "wb") # a = append, b = binary mode
for i in range(0, chunk_number):
chunk_length = read_from_socket(self._socket, 5)
chunk_length = int(chunk_length)
chunk_data = read_from_socket(self._socket, chunk_length)
newFile.write(chunk_data)
percent = i* 100/chunk_number
self._ui_handler.download_file_changed(self._filename, self._file_md5, self._peer_ip, percent)
newFile.close()
self._ui_handler.download_file_changed(self._filename, self._file_md5, self._peer_ip, 100)
klog("Download completed")
except Exception, ex:
klog("An exception has occurred: "+str(ex))
def _resultsTreeClicked(self, item, index):
file_name = item.text(0)
peer_ip = item.text(1)
peer_port = item.text(2)
file_md5 = item.text(3)
klog("Scarico: %s da %s:%s" % (file_name, peer_ip, peer_port))
self.request_emitter.download_file(peer_ip, peer_port, file_md5, file_name)
self.ui.mainTabWidget.setCurrentIndex(2) #go to the transfer page
def __init__(self, socket, filename, file_md5, peer_ip, ui_handler):
super(DownloadThread, self).__init__()
self._socket = socket
self._filename = filename
self._file_md5 = file_md5
self._peer_ip = peer_ip
self._ui_handler = ui_handler
klog("downloading %s %s" %(self._filename, str(self._file_md5)))
def __init__(self, socket, filename, file_id, file_part, peer_ip, request_emitter, ui_handler):
super(DownloadThread, self).__init__()
self._socket = socket
self._filename = filename
self._file_id = file_id
self._file_part = file_part
self._peer_ip = peer_ip
self._ui_handler = ui_handler
self._request_emitter = request_emitter
klog("downloading %s %s part %s" %(self._filename, str(self._file_id), str(file_part)))
def afin_received(cls, sock, ui_handler):
num = int(read_from_socket(sock, 3))
klog("%d files found" % num)
for i in range(0, num):
file_md5 = str(read_from_socket(sock, 16))
file_name = str(read_from_socket(sock, 100)).strip(" ")
copies_num = int(read_from_socket(sock, 3))
for j in range(0, copies_num):
peer_ip = str(sock.recv(15))
peer_port = str(sock.recv(5))
# Add the result to the result list and show it on screen if is nor my filw
if peer_ip != format_ip_address(get_local_ip(sock.getsockname()[0])):
klog("Found %s from %s:%s" % (file_name, peer_ip, peer_port))
ui_handler.add_new_result_file(file_name, peer_ip, peer_port, encode_md5(file_md5))
def __init__(self, file, request_emitter, ui_handler):
super(DownloadQueue, self).__init__()
self._file = file
self._ui_handler = ui_handler
self._request_emitter = request_emitter
self._downloaded_parts = FilesManager.get_completed_file_parts_nums(file.id)
self._downloading_parts = []
klog("Started queue system for files %s %s" %(self._file.filename, str(self._file.id)))
self.connect(self, SIGNAL("part_download_finished"), self._completed_part)
self._check_parts()
parts = FilesManager.get_ordered_parts_number(self._file.id)
for i in range(min(QUEUE_LENGTH, len(parts))):
peers = FilesManager.get_peers_for_file_part(self._file.id, parts[i])
if len(peers) > 0:
if len(peers) == 1:
peer = peers[0]
else:
peer = peers[random.randrange(0,len(peers)-1)]
self._request_emitter.download_part(peer.ip, peer.port, self._file.id, parts[i])
def run(self):
command = str(read_from_socket(self._socket, 4))
if command == "AREP":
klog("Received AREP")
chunk_number = int(read_from_socket(self._socket, 6))
#try:
klog("Download started")
klog("chunk number: " + str(chunk_number))
newFile = open(FilesManager.get_filepart_path_from_file(self._file_id, self._file_part), "wb") # a = append, b = binary mode
for i in range(0, chunk_number):
chunk_length = read_from_socket(self._socket, 5)
chunk_length = int(chunk_length)
chunk_data = read_from_socket(self._socket, chunk_length)
newFile.write(chunk_data)
percent = i* 100/chunk_number
self._ui_handler.download_file_changed(self._filename, self._file_id, self._file_part, self._peer_ip, percent)
newFile.close()
self._ui_handler.download_file_changed(self._filename, self._file_id, self._file_part, self._peer_ip, 100)
klog("Download completed")
f = FilesManager.find_file_by_id(self._file_id)
self._request_emitter.part_download_finished(self._file_id, self._file_part)
self._request_emitter.register_part_to_tracker(f, self._file_part)
# except Exception, ex:
# klog("An exception has occurred: "+str(ex))
else:
FilesManager.set_status_part_for_file(self._file_id, self._file_part, "empty")
self._socket.close()
def _completed_part(self, file_id, part_num):
lock = Lock()
lock.acquire()
if str(file_id) != str(self._file.id):
lock.release()
return
part_num = int(part_num)
klog("Completed part %d" %part_num)
if part_num not in self._downloaded_parts:
self._downloaded_parts.append(part_num)
if len(self._downloaded_parts) == self._file.parts_count:
klog("All parts downloaded, creating the file")
self._timer.cancel()
FilesManager.create_file_from_parts(self._file.id)
else:
klog("Starting the new part")
parts = FilesManager.get_ordered_parts_number(self._file.id)
if len(parts) >0:
peers = FilesManager.get_peers_for_file_part(self._file.id, parts[0])
if len(peers) > 0:
if len(peers) > 1:
peer = peers[random.randrange(0,len(peers))]
else:
peer = peers[0]
self._request_emitter.download_part(peer.ip, peer.port, file_id, parts[0])
klog("Started download part %d from peer: %s" %(parts[0], peer.ip))
lock.release()
def run(self):
try:
self._socket.setblocking(1) # <-------- ??
command = str(self._socket.recv(4))
#
# FILES
#
# Received package looking for a file
if command == "QUER":
if UsersManager.is_super_node():
pckt_id = str(self._socket.recv(16))
sender_ip = str(self._socket.recv(15))
sender_port = str(self._socket.recv(5))
ttl = int(self._socket.recv(2))
query = str(self._socket.recv(20))
klog("%s pid: %s %s:%s ttl: %s query: %s" % (command, pckt_id, sender_ip, sender_port, ttl, query))
if not PacketsManager.is_packet_id_known(pckt_id):
PacketsManager.add_new_packet(pckt_id, sender_ip)
if int(ttl) > 0:
# look for the requested file
for f in FilesManager.find_files_by_query(query):
command = "AQUE"
sock = connect_socket(sender_ip, sender_port)
sock.send(
command + pckt_id + format_ip_address(self.ip) + format_port_number(self.port)
)
sock.send(decode_md5(f.hash))
sock.send(format_filename(f.filename))
klog(
"command sent %s pkid:%s %s:%s md5: %s filename: %s"
% (command, pckt_id, self.ip, self.port, f.hash, f.filename)
)
sock.close()
# decrease ttl propagate the message to the peers
ttl = format_ttl(ttl - 1)
if int(ttl) > 0:
for superpeer in PeersManager.find_known_peers(superpeers=True):
# query flooding to the known superpeers peers except for the sender
if not PeersManager.are_same_peer(superpeer, Peer(sender_ip, sender_port)):
sock = connect_socket(superpeer.ip, superpeer.port)
sock.send(command + pckt_id + sender_ip + sender_port + str(ttl) + query)
klog(
"command sent to %s:%s: %s pkid:%s %s:%s ttl: %s query: %s"
% (
superpeer.ip,
superpeer.port,
command,
pckt_id,
sender_ip,
sender_port,
ttl,
query,
)
)
sock.close()
# Received package in reply to a file research
elif command == "AQUE":
klog("AQUE received")
search_id = str(self._socket.recv(16))
sender_ip = str(self._socket.recv(15))
sender_port = str(self._socket.recv(5))
hash = encode_md5(self._socket.recv(16))
filename = str(self._socket.recv(100)).strip(" ")
if PacketsManager.is_local_search(search_id):
if PacketsManager.is_generated_packet_still_valid(search_id):
klog("Found %s from %s:%s" % (filename, sender_ip, sender_port))
self.ui_handler.add_new_result_file(filename, sender_ip, sender_port, hash)
else:
ServiceThread.add_query_result(search_id, sender_ip, sender_port, hash, filename)
elif command == "FIND":
if UsersManager.is_super_node():
session_id = str(self._socket.recv(16))
query = str(self._socket.recv(20))
p_id = generate_packet_id(16)
ttl = 3
# Launch a request to the other super peers with the query
for superpeer in PeersManager.find_known_peers(True):
sock = connect_socket(superpeer.ip, superpeer.port)
local_ip = get_local_ip(sock.getsockname()[0])
sock.send(
"QUER"
+ p_id
+ format_ip_address(local_ip)
+ format_port_number(self.port)
+ format_ttl(ttl)
+ format_query(query)
)
sock.close()
ServiceThread.initialize_for_pckt(p_id) # enable the receive of packets for this query
time.sleep(20)
# search_id is the packet id of QUER request, it identifies univocally the query
superpeers_result = ServiceThread.get_query_results(p_id)
my_directory_result = FilesManager.find_files_by_query(query)
ServiceThread.clear_pending_query(p_id)
result = {}
# costruisco l array di risultati
for r in superpeers_result:
if result.has_key(r["hash"]):
result[r["hash"]].peers.append([{"ip": r["ip"], "port": r["port"]}])
else:
result[r["hash"]] = {
"filemd5": r["hash"],
"filename": r["filename"],
"peers": [{"ip": r["ip"], "port": r["port"]}],
}
for f in my_directory_result:
if f.is_my_file():
if result.has_key(f.hash):
result[f.hash]["peers"].append({"ip": self.ip, "port": self.port})
else:
result[f.hash] = {
"filemd5": f.hash,
"filename": f.filename,
"peers": [{"ip": self.ip, "port": self.port}],
}
else:
u = UsersManager.find_user_by_session_id(f.session_id)
if result.has_key(f.hash):
result[f.hash]["peers"].append({"ip": u.ip, "port": u.port})
else:
result[f.hash] = {
"filemd5": f.hash,
"filename": f.filename,
"peers": [{"ip": u.ip, "port": u.port}],
}
# must send AFIN
# self._socket.close()
peer = UsersManager.find_user_by_session_id(session_id)
# sock = connect_socket(peer.ip, peer.port)
sock = self._socket
sock.send("AFIN" + format_deletenum(len(result)))
for key, r in result.items():
sock.send(decode_md5(r["filemd5"]))
sock.send(format_filename(r["filename"]))
sock.send(format_deletenum(len(r["peers"])))
for peer in r["peers"]:
sock.send(format_ip_address(peer["ip"]))
sock.send(format_port_number(peer["port"]))
# threading.Timer(20, self.search_finished, args=(p_id,)).start() #calls the fun function with p_id as argument
klog("Sent AFIN")
elif command == "AFIN":
klog("AFIN received")
ServiceThread.afin_received(self._socket, self.ui_handler)
#
# PEERS
#
elif command == "LOGI":
if UsersManager.is_super_node():
peer_ip = str(read_from_socket(self._socket, 15))
peer_port = str(read_from_socket(self._socket, 5))
if UsersManager.find_user_by_ip(peer_ip) is not None:
self._socket.send("ALGI" + "0" * 16)
klog("Sent ALGI" + "0" * 16 + "to: %s" % (peer_ip))
else:
session_id = self.login_user(peer_ip, peer_port)
klog(
"Received a LOGI, from: %s, port: %s. Session id created: %s"
% (peer_ip, peer_port, session_id)
)
self._socket.send("ALGI" + session_id)
klog("Sent ALGI to: %s, port: %s" % (peer_ip, peer_port))
self.ui_handler.add_new_peer(peer_ip, peer_port)
elif command == "ALGI":
# Normally this is done in the RequestEmitter, but we have the same code here to
# prevent crashes in case of closed and re-opened socket
session_id = str(read_from_socket(self._socket, 16))
klog("ALGI received form super peer: %s", session_id)
UsersManager.set_my_session_id(session_id)
self.ui_handler.login_done(session_id)
elif command == "LOGO":
peer_session_id = str(read_from_socket(self._socket, 16))
peer = UsersManager.find_user_by_session_id(peer_session_id)
peer_ip = peer.ip
peer_port = peer.port
klog("Received a LOGO, from session_id: %s. Peer: %s:%s" % (peer_session_id, peer_ip, peer_port))
delete_num = self.logout_user(peer_session_id)
self._socket.send("ALGO" + format_deletenum(delete_num))
klog("Sent ALGO to session_id: %s deletenum: %d" % (peer_session_id, delete_num))
self.ui_handler.remove_peer(peer_ip, peer_port)
elif command == "ALGO":
delete_num = read_from_socket(self._socket, 3)
klog("ALGO received. delete num: %s" % delete_num)
UsersManager.set_my_session_id("")
klog("TODO: destroy the listening client???")
# Received package looking for super-peer
elif command == "SUPE":
klog("SUPE received")
pckt_id = str(read_from_socket(self._socket, 16))
sender_ip = str(read_from_socket(self._socket, 15))
sender_port = str(read_from_socket(self._socket, 5))
ttl = int(read_from_socket(self._socket, 2))
if not PacketsManager.is_packet_id_known(pckt_id):
PacketsManager.add_new_packet(pckt_id, sender_ip)
if int(ttl) > 0:
if UsersManager.is_super_node():
# Respond with an ASUP
sock = connect_socket(sender_ip, sender_port)
sock.send("ASUP" + pckt_id + self.ip + self.port + str(ttl))
klog(
"command sent to %s:%s: ASUP pkid:%s %s:%s ttl: %s"
% (sender_ip, sender_port, pckt_id, self.ip, self.port, ttl)
)
sock.close()
# decrease ttl and propagate the message to the peers/superpeers
ttl = format_ttl(ttl - 1)
if int(ttl) > 0:
# propagate the SUPE
for peer in PeersManager.find_known_peers():
if not PeersManager.are_same_peer(peer, Peer(sender_ip, sender_port)):
sock = connect_socket(peer.ip, peer.port)
sock.send("SUPE" + pckt_id + sender_ip + sender_port + str(ttl))
klog(
"command sent to %s:%s: SUPE pkid:%s %s:%s ttl: %s"
% (peer.ip, peer.port, pckt_id, sender_ip, sender_port, ttl)
)
sock.close()
# Received package in reply to a super-peer search
elif command == "ASUP":
pckt_id = str(self._socket.recv(16))
peer_ip = str(self._socket.recv(15))
peer_port = str(self._socket.recv(5))
klog("ASUP received from %s:%s" % (peer_ip, peer_port))
if PacketsManager.is_generated_packet_still_valid(pckt_id):
# Check if the superpeer war already added as a normal peer
if PeersManager.is_known_peer(Peer(peer_ip, peer_port)):
PeersManager.become_superpeer(peer_ip, peer_port)
self.ui_handler.add_new_superpeer(peer_ip, peer_port)
else:
if peer_ip != self.ip:
PeersManager.add_new_peer(Peer(peer_ip, peer_port, True))
self.ui_handler.add_new_superpeer(peer_ip, peer_port)
# Received package asking for a file
elif command == "RETR":
klog("RETR received")
CHUNK_DIM = 128
md5 = encode_md5(self._socket.recv(16))
self._socket.send("ARET") # sending the ack command
remote_ip = self._socket.getpeername()[0]
my_session_id = UsersManager.get_my_session_id()
# Get the file matching the md5
klog("finding file with md5: %s, session_id %s" % (md5, my_session_id))
file = FilesManager.find_file_by_hash(md5)
if file:
klog("i have found the file: %s stored in %s" % (file.filename, file.filepath))
# Chunks
size = file_size(file.filepath)
bytes_sent = 0
chunks_num = int(size // CHUNK_DIM)
leftover = size % CHUNK_DIM
if leftover != 0.0:
chunks_num += 1
self._socket.send(format_chunks_number(chunks_num)) # sending the chunks number
# open the file
file2send = open(file.filepath, "rb")
chunk = file2send.read(CHUNK_DIM)
while chunk != "":
self._socket.send(format_chunk_length(len(chunk))) # sending the chunk length
bytes_sent += self._socket.send(chunk) # sending the chunk
percent = bytes_sent * 100 / size
self.ui_handler.upload_file_changed(file.filename, file.hash, remote_ip, percent)
chunk = file2send.read(CHUNK_DIM)
file2send.close()
klog("upload completed: %s" % file.filename)
self.ui_handler.upload_file_changed(file.filename, file.hash, remote_ip, 100)
else:
klog("I do not have this file!")
elif command == "ADFF":
peer_session_id = str(read_from_socket(self._socket, 16))
file_hash = encode_md5(read_from_socket(self._socket, 16))
file_name = str(read_from_socket(self._socket, 100)).strip(" ")
klog("Received a ADFF, from: %s. Hash: %s. Filename: %s." % (peer_session_id, file_hash, file_name))
self.add_file(peer_session_id, file_hash, file_name)
elif command == "DEFF":
peer_session_id = str(read_from_socket(self._socket, 16))
file_hash = encode_md5(read_from_socket(self._socket, 16))
self.remove_file(peer_session_id, file_hash)
klog("Received a DELF, from: %s. Hash: %s." % (peer_session_id, file_hash))
if command == "":
condition = False
# Close the socket
self._socket.close()
except Exception, ex:
condition = False
print ex
def _check_parts(self):
klog("Timer: update remote file datas for file: %s" %self._file.id)
self._request_emitter.update_remote_file_data(self._file.id)
self._timer = Timer(60,self._check_parts, ())
self._timer.start()
def run(self):
try:
self._socket.setblocking(1) # <-------- ??
command = str(self._socket.recv(4))
# Received package looking for a file
if command == "QUER":
pckt_id = str(self._socket.recv(16))
sender_ip = str(self._socket.recv(15))
sender_port = str(self._socket.recv(5))
ttl = int(self._socket.recv(2))
query = str(self._socket.recv(20))
klog("%s pid: %s %s:%s ttl: %s query: %s" % (command, pckt_id, sender_ip, sender_port, ttl, query))
if not PacketsManager.is_packet_id_known(pckt_id):
PacketsManager.add_new_packet(pckt_id, sender_ip)
if int(ttl) > 1:
# decrease ttl propagate the message to the peers
ttl = format_ttl(ttl -1)
for peer in PeersManager.find_known_peers():
#query flooding to the known peers except for the sender
if not PeersManager.are_same_peer(peer, Peer(sender_ip, sender_port)):
sock = connect_socket(peer.ip, peer.port)
sock.send(command + pckt_id + sender_ip + sender_port + str(ttl) + query)
klog("command sent to %s:%s: %s pkid:%s %s:%s ttl: %s query: %s" % (peer.ip, peer.port, command, pckt_id, sender_ip, sender_port, ttl, query))
sock.close()
# look for the requested file
for f in FilesManager.find_files_by_query(query):
md5 = f.md5
filename = f.filename
command = "AQUE"
sock = connect_socket(sender_ip, sender_port)
sent = 0
sent += sock.send(command + pckt_id + format_ip_address(self.ip) + format_port_number(self.port))
sent += sock.send(decode_md5(md5))
sent += sock.send(format_filename(filename))
klog("command sent %s pkid:%s %s:%s md5: %s filename: %s" % (command, pckt_id, self.ip, self.port, md5, filename))
sock.close()
# Received package in reply to a file research
if command == "AQUE":
klog("AQUE received")
pckt_id = str(self._socket.recv(16))
peer_ip = str(self._socket.recv(15))
peer_port = str(self._socket.recv(5))
file_md5 = str(self._socket.recv(16))
file_name = str(self._socket.recv(100)).strip(" ")
if PacketsManager.is_generated_packet_still_valid(pckt_id):
# Add the result to the result list and show it on screen
self.ui_handler.add_new_result_file(file_name, peer_ip, peer_port, encode_md5(file_md5))
# Received package looking for neighbour peers
if command == "NEAR":
klog("NEAR received")
pckt_id = str(self._socket.recv(16))
sender_ip = str(self._socket.recv(15))
sender_port = str(self._socket.recv(5))
ttl = int(self._socket.recv(2))
if not PacketsManager.is_packet_id_known(pckt_id):
PacketsManager.add_new_packet(pckt_id, sender_ip)
if ttl > 1:
# decrease ttl and propagate the message to the peers
ttl = format_ttl(ttl -1)
for peer in PeersManager.find_known_peers():
#query floading to the known peers except for the sender
if not PeersManager.are_same_peer(peer, Peer(sender_ip, sender_port)):
sock = connect_socket(peer.ip, peer.port)
sock.send(command + pckt_id + sender_ip + sender_port + ttl)
klog("command sent to %s:%s: %s pkid:%s %s:%s ttl: %s" % (peer.ip, peer.port, command, pckt_id, sender_ip, sender_port, ttl))
sock.close()
# show yourself to the peer
sock = connect_socket(sender_ip, sender_port)
sock.send("ANEA" + pckt_id + self.ip + self.port)
sock.close()
# Received package in reply to a neighbour peer search
if command == "ANEA":
pckt_id = str(self._socket.recv(16))
peer_ip = str(self._socket.recv(15))
peer_port = str(self._socket.recv(5))
klog("ANEA received from %s:%s" %(peer_ip, peer_port))
if PacketsManager.is_generated_packet_still_valid(pckt_id):
# Add peer to known peers
PeersManager.add_new_peer(peer_ip, peer_port)
self.ui_handler.peers_changed()
# Received package asking for a file
if command == "RETR":
klog("RETR received")
CHUNK_DIM = 128
md5 = encode_md5(self._socket.recv(16))
self._socket.send("ARET") #sending the ack command
remote_ip = self._socket.getpeername()[0]
# Get the file matching the md5
file = FilesManager.find_file_by_md5(md5)
if file:
klog("i have found the file: %s" % file.filename)
# Chunks
size = file_size(os.path.join(file.filepath, file.filename))
bytes_sent = 0
chunks_num = int(size // CHUNK_DIM)
leftover = size % CHUNK_DIM
if leftover != 0.0:
chunks_num += 1
self._socket.send(format_chunks_number(chunks_num)) #sending the chunks number
#open the file
file2send= open(os.path.join(file.filepath, file.filename), 'rb')
chunk = file2send.read(CHUNK_DIM)
while chunk != '':
self._socket.send(format_chunk_length(len(chunk))) #sending the chunk length
bytes_sent += self._socket.send(chunk) #sending the chunk
percent = bytes_sent*100/size
self.ui_handler.upload_file_changed(file.filename, file.md5, remote_ip, percent)
chunk = file2send.read(CHUNK_DIM)
file2send.close()
klog("upload completed: %s" %file.filename)
self.ui_handler.upload_file_changed(file.filename, file.md5, remote_ip, 100)
else:
klog("file by md5 not found")
if command == "":
condition = False
# Close the socket
self._socket.close()
except Exception, ex:
condition = False
print ex
def run(self):
print "thread started"
while 1:
try:
#TODO: cambiare questo perche la recv tenta di leggere byte anche se non ce ne sono e va in loop, che si fa?
command = str(self._socket.recv(4))
if command == "LOGI":
peer_ip = str(self._socket.recv(15))
peer_port = str(self._socket.recv(5))
session_id = str(self.login_user(peer_ip, peer_port))
klog("Received a LOGI, from: %s, port: %s. Session id created: %s" %(peer_ip, peer_port, session_id))
self._socket.send("ALOG"+session_id)
klog("Sent ALOG to: %s, port: %s" %(peer_ip, peer_port))
elif command == "ADDF":
peer_session_id = str(self._socket.recv(16))
file_hash = str(self._socket.recv(16))
file_name = str(self._socket.recv(100))
copy_num = str(self.add_file(peer_session_id, file_hash, file_name))
klog("Received a ADDF, from: %s. Hash: %s. Filename: %s. Files with same hash: %d" %(peer_session_id, file_hash, file_name, copy_num))
self._socket.send("AADD"+copy_num)
klog("Sent AADD to: %s. Files copy num: %s" %(peer_session_id, copy_num))
elif command == "DELF":
peer_session_id = str(self._socket.recv(16))
file_hash = str(self._socket.recv(16))
copy_num = str(self.remove_file(peer_session_id, file_hash))
klog("Received a DELF, from: %s. Hash: %s. Remaining files with same hash: %d" %(peer_session_id, file_hash, copy_num))
self._socket.send("ADEL"+copy_num)
klog("Sent ADEL to: %s" %(peer_session_id))
elif command == "FIND":
peer_session_id = str(self._socket.recv(16))
query_string = str(self._socket.recv(20))
result = self.find_file(peer_session_id, query_string)
print "tbd"
#self._socket.send("AFIN"+)
elif command == "RREG":
peer_session_id = str(self._socket.recv(16))
file_md5 = str(self._socket.recv(16))
peer_ip = str(self._socket.recv(15))
peer_port = str(self._socket.recv(5))
download_num = self.register_download(peer_session_id, file_md5, peer_ip, peer_port)
self._socket.send("ARRE"+download_num)
elif command == "LOGO":
peer_session_id = str(self._socket.recv(16))
delete_num = self.logout_user(peer_session_id)
klog("Received a LOGO, from session_id: %s" %(session_id))
self._socket.send("ALGO"+delete_num)
klog("Sent ALGO to session_id: %s" %(session_id))
except Exception, e:
print e
break
def run(self):
try:
self._socket.setblocking(1) # <-------- ??
command = str(self._socket.recv(4))
#
# PEERS
#
# Received package asking for a file
if command == "RETP":
klog("RETP received")
CHUNK_DIM = 128
file_id = self._socket.recv(16)
part_num = int(self._socket.recv(8))
self._socket.send("AREP") #sending the ack command
remote_ip = self._socket.getpeername()[0]
my_session_id = UsersManager.get_my_session_id()
# Get the file matching the file_id
klog("finding file with id: %s, session_id %s, part %s" %(file_id, my_session_id, part_num))
file = FilesManager.find_file_by_id(file_id)
if file:
klog("i have found the file: %s stored in %s" % (file.filename, file.filepath))
# Chunks
size = file.get_part_size(part_num)#file_size(file.filepath)
bytes_sent = 0
chunks_num = int(size // CHUNK_DIM)
leftover = size % CHUNK_DIM
if leftover != 0.0:
chunks_num += 1
self._socket.send(format_chunks_number(chunks_num)) #sending the chunks number
part = file.get_part(part_num)
part_size = file.get_part_size(part_num)
index = 0
chunk = part[0:CHUNK_DIM]
while True:
self._socket.send(format_chunk_length(len(chunk))) #sending the chunk length
bytes_sent += self._socket.send(chunk) #sending the chunk
percent = bytes_sent*100/size
self.ui_handler.upload_file_changed(file.filename, file.id, part_num, remote_ip, percent)
index += 1
if ((index * CHUNK_DIM) <= part_size) and ((index + 1)* CHUNK_DIM <= part_size):
chunk = part[index * CHUNK_DIM : (index + 1)* CHUNK_DIM]
elif ((index * CHUNK_DIM) <= part_size) and ((index + 1)* CHUNK_DIM > part_size):
chunk = part[index * CHUNK_DIM : ]
else:
break
'''
#open the file
file2send = file.get_part(part_num)#open(file.filepath, 'rb')
chunk = file2send.read(CHUNK_DIM)
while chunk != '':
self._socket.send(format_chunk_length(len(chunk))) #sending the chunk length
bytes_sent += self._socket.send(chunk) #sending the chunk
percent = bytes_sent*100/size
self.ui_handler.upload_file_changed(file.filename, file.id, part_num, remote_ip, percent)
chunk = file2send.read(CHUNK_DIM)
file2send.close()
'''
klog("upload completed: %s" %file.filename)
self.ui_handler.upload_file_changed(file.filename, file.id, part_num, remote_ip, 100)
else:
klog("I do not have this file!")
else:
klog("ERROR: received a %s command that service_thread does not have to handle:" %command)
# Close the socket
self._socket.close()
except Exception, ex:
print ex
