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while reading ctf write-ups came across script #!/usr/bin/env python import struct import image import dpkt init_x, init_y = 100, 400 def print_map(pcap, device): picture = image.new("rgb", (1200, 500), "white") pixels = picture.load() x, y = init_x, init_y ts, buf in pcap: device_id, = struct.unpack("b", buf[0x0b]) if device_id != device: continue data = struct.unpack("bbbb", buf[-4:]) status = data[0] x = x + data[1] y = y + data[2] if (status == 1): in range(-5, 5): j in range(-5, 5): pixels[x + , y + j] = (0, 0, 0, 0) else: pixels[x, y] = (255, 0, 0, 0) picture.save("riverside-map.png", "png") if __name__ == "__main__": f = open("usb.pcap", "rb") pcap = dpkt.pcap.reader(f) print_map(pcap, 5) f.close() and

what way 1 inject property value property placeholder cdi bean? in spring 1 write: @org.springframework.beans.factory.annotation.value("${webservice.user}") private string webserviceuser; what sets webserviceuser field property webservice.user property file/property placeholder. how cdi? i've tried find answer, couldn't find equivalent. however, people write, can use cdi spring substitute on application servers, , use case basic, surely there must easy way, unfortunately i've failed find it. cdi specification dependecy injection , context doesn't have such configuration things out of box. provides powerful extension mechanism allows third party projects add new portable features (i.e works cdi implementation , not tied server). important project providing cdi extensions apache deltaspike , news, provides need. so need add deltaspike-core in project. if use maven, need add dependencies pom.xml <dependency> <group

i'm trying write c++ client talk websocket server written using nodejs , socket.io. can't c++ client establish websocket connection; server drops connection right after client requests http connection upgraded websocket. i used tcpdump watch packets going , forth. when use websocket server browser, works great , tcpdump output shows packets going , forth. when try connect server using c++ client, websocket connection never gets established. output tcpdump shows upgrade request being sent server followed server dropping connection. i tried replicating sequence of events using nc . connected server (running on port 8080) , copy-pasted exact set of headers sent browser, captured tcpdump. duplicate of working headers, connection dropped. there no output on server end indicating why connection gets dropped. here headers sent: get /socket.io/?type=player&eio=3&transport=websocket&sid=7mdclht_8ctsd6f4aaac http/1.1 host: localhost:8080 connection: upgrade prag

i making quiz application in pyqt4, there 3 main generators: incorrect , correct , timeout . all answers connecting scorecheck function: def scorecheck(self, sendercheck): if ( sendercheck == self.answ ) or ( sendercheck == self.answ1 ) or ( sendercheck == self.answ5 ) or ( sendercheck == self.answ7 ) or ( sendercheck == self.answ8 ) or ( sendercheck == self.answ10 ): self.wronganswers.append(1) elif ( sendercheck == self.answ2 ) or ( sendercheck == self.answ4 ) or ( sendercheck == self.answ9 ): self.correctanswers.append(1) elif sendercheck == self.tmr3: self.timeouts.append(1) print "worked" print len(self.timeouts) else: pass self.wronganswerlabel = qtgui.qlabel(str(len(self.wronganswers)), self) self.wronganswerlabel.setgeometry(220, 40, 200, 200) self.wronganswerlabel.setobjectname('wronganswercount') self.wronganswerlabel.setstylesheet("#wronganswercount { font-size

as may know there 3 ways deploy qt application on android : use ministro service install qt deploy local qt libraries temporary directory bundle qt libraries in apk the first method takes 30 seconds , needs install apk . ministro . second takes 1 minute me ! , anytime try run program qt creator pushes qt libraries device. third 1 makes .apk file big , again takes 1 minute me. think situation that's not reasonable develop android application using qt. there way make deploying process faster? almost full year since op , things have not changed @ all. deployment of 7 mb apk takes on minute , half project compiles in 5 seconds. reason answering not problem got resolved, offer alternative solution. i've implemented "workaround" consisting of 2 applications work in tandem - 1 on pc , 1 on device - created compile files remotely, turned out faster alternative deployment well. on host create application launches compilation in separate process, when do

i trying rename upload image permission denied @ sys_fail2 - (d:/ror/projects/grp/public/uploads/gallery/test.jpg, d:/ror/projects/grp/public/uploads/gallery/qinsnvzicc20160509132021.jpg) my code : photo = params[:gallery][:gal_img] name = photo.original_filename directory = "#{rails.root}/public/uploads/gallery/" path = file.join(directory, name) uniq_name = (0...10).map { (65 + rand(26)).chr }.join time_footprint = time.now.to_formatted_s(:number) file.open(path, "wb") |file| new_file_name = uniq_name + time_footprint + file.extname(file) file.write(photo.read) @uniq_path = file.join(directory, new_file_name) file.rename(file, @uniq_path) end i have checked , giving privilege in ruby directory. please let me know why getting permission denied error?