Hpb_ cace (HPB Team)Go Ethereum IntroductionThe Go-ethereum client is often referred to as Geth, which is a command-line interface that performs the complete Ethereum node implemented on go. By installing and running Geth, you can participate in the real-time network of the Ethereum front desk and do the following:
Dig real etheric coins.
Transfer of funds between different addresses
Create a contract, send a transaction
Explore b
project, remember copy item if needed and targets all to tick, otherwise will errorAnd then just connect with the afnetworking, just more than the general HTTP connection set up the certificate sectionGive an example:1Manager =[Afhttpsessionmanager manager];2 3Afsecuritypolicy *securitypolicy =[Afsecuritypolicy Policywithpinningmode:afsslpinningmodepublickey];4Securitypolicy.allowinvalidcertificates =YES;5Manager.securitypolicy =securitypolicy;6 7[Manager GET:@"https://localhost:8100/test"P
Tags: base libaio doc software cut install highlight rar row dataUsing Python to run database scripts on Linux: cx_oracle.databaseerror:dpi-1047:64-bit Oracle Client Library cannot be loaded solutionThe cause of this problem is that the Python2.7 of this machine is 64 bits, and the database uses 32-bit instantclient-basic, so we have to update the Instantclient-basic version to 64-bitThe following is accord
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Select line break translation rules (default)Configure terminal (select default)This step really do not know what meaning, seemingly and file system cache related, choose default OKFinally started to install theFinish, version update log you want to see it, I don't see it anyway.Iv. installation of TortoisegitClick on the Tortoisegit installation package and click "Next"The license agreement, except "Next" what else, can only accept AhSelect the components you want to install by defaultPe
This article mainly introduces the python network programming example and provides the client and server. if you need it, refer to the client.
The code is as follows:
If _ name _ = '_ main __':Import socketImport OSSock = socket. socket (socket. AF_INET, socket. SOCK_STREAM)Sock. connect ("localhost", 8001 ))Import timeTime. sleep (2)Sock. send ('1 ')Print sock
The example in this article describes how the python implementation obtains the specified file on the client and transfers it to the server. Share to everyone for your reference. The specific analysis is as follows:
The program implements all of the target machine's directory (controllable) of all of the types of files (controllable) to obtain and upload to your own machine.
1, with the Base64 encode (inf
This article mainly introduces the udp protocol Server and Client code instances implemented by python. For more information, see the following code:
Server:
The code is as follows:
#! /Usr/bin/env python# UDP Echo Server-udpserver. pyImport socket, tracebackHost =''Port = 54321S = socket. socket (socket. AF_INET, socket. SOCK_DGRAM)S. setsockopt (socket. SOL_S
!" def handle(self): print "get connection from :",self.client_address while True: try: data = self.request.recv(4096) print "get data:", data if not data: print "break the connection!" break else: action, filename = data.split() if action == "put":
The server that implements socket communication in Python is complex, and the client is very simple, so the client is basically implemented by the SOCKCT module, and the serviceThere are many modules that can be used for the end, as follows:1, the Client2. Socketserver ModuleIn order to enable multiple clients to access the service and communicate at the same tim
Using twisted to build a socket server, and can send messages to the client, relatively simple, directly on the code #coding =utf-8‘‘‘Used to implement a request to the response client, and can send a message to the customer,‘‘‘ fromTwisted.internetImportReactor fromTwisted.internet.protocolImportProtocol, FactoryImportTimeImportThread#线程体,defTimerNo, interval): whileTrue:Time.sleep (interval)Print(Time.str
Python: verify the legality of client connections and the socketserver and pythonsocketserver1. verify the validity of client links
1 from socket import * 2 import hmac, OS 3 4 secret_key = B 'linhaifeng bang '5 def conn_auth (conn): 6''' 7 authenticate client link 8: param conn: 9: return: 10 '''11 print ('start verif
Go-ethereum
The Go-ethereum client is often referred to as the Geth, which is a command-line interface that executes the complete etheric square node that is implemented on the go. By installing and running the Geth, you can participate in the real-time network of the front desk of the ether and do the following: Mining the real etheric currency transfer funds between different addresses create contracts, send deals to explore block history and many
to: https://github.com/Grokzen/redis-py-cluster/tree/master/testsImport redisfrom rediscluster import rediscluster def main (): Startup_nodes = [{"Host": "127.0.0.1", "Port": "7000"}] r c = Rediscluster (Startup_nodes=startup_nodes, decode_responses=true) print '--------get/set---------' if not rc.set ("foo", "Hello, Redis-py-cluster"): print ' Set foo to cluster failed!!! ' return-1 print ' foo =%s '% (Rc.get ("foo"),) if __name__ = = ' __main__ ': Main ()This article is from the "Quiet lunati
This article describes how to use ftplib to implement a simple FTP client in Python. The example analyzes the settings and usage skills of the ftplib module, for more information about how to use ftplib to implement a simple FTP client, see the example in this article. Share it with you for your reference. The specific implementation method is as follows:
#! /U
you get them" "R_server.rpush ('List1','element1')#we use the List1 as a list and push element1 as its elementR_server.rpush ('List1','Element2')#assign another element to our listR_server.rpush ('List2','Element3')#The samePrint 'Our Redis list len is:%s'% R_server.llen ('List1')#With Llen we get my redis list size right from RedisPrint 'At Pos 1 of our list is:%s'% R_server.lindex ('List1', 1)#With lindex, we query Redis to tell us which element are at POS 1 for our list" "sets perform identi
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