ip

Getting incoming TTL in GO

由 谁说我不能喝 提交于 2021-02-19 05:34:22
问题 I'm struggling with a small project I am working on. I want to implement functionality in GO that allows me to set the IP header TTL on an outgoing UDP packet that I then send and view the received TTL on the other end. I have a tried using a number of connections provided by the 'net' library and have so far had no success (I can set the TTL but I can't read it). Can anyone suggest a way of sending and receiving UDP packets that provide access to the packet's TTL field? 回答1: Set TTL: var

TCP/IP over Serial Port

由 ╄→尐↘猪︶ㄣ 提交于 2021-02-18 18:14:04
问题 I am trying to setup a network interface over one of serialports of the system. I am using beaglebone and Xbee-wifi modules. Basically I'm trying to communicate 2 beaglebone over serialport bu using a TCP/IP protocole. I need to connect to the beaglebone via ssh, telnet or via default web port 80. So I do not need a single port working on the serial interface. I need a newtork intarface running over serialport. Is there anyway to do this? Hardware : beaglebone black os : angstrom 回答1: Here's

TCP/IP over Serial Port

由 こ雲淡風輕ζ 提交于 2021-02-18 18:13:16
问题 I am trying to setup a network interface over one of serialports of the system. I am using beaglebone and Xbee-wifi modules. Basically I'm trying to communicate 2 beaglebone over serialport bu using a TCP/IP protocole. I need to connect to the beaglebone via ssh, telnet or via default web port 80. So I do not need a single port working on the serial interface. I need a newtork intarface running over serialport. Is there anyway to do this? Hardware : beaglebone black os : angstrom 回答1: Here's

How to get user's IP address in a bot with node.js?

由 主宰稳场 提交于 2021-02-17 05:28:08
问题 I am writing a bot in node.js. May I know how can I insert code to console.log the IP address of message sender please? I need the IP address to perform some auto-log in. Many Thanks!! 回答1: You can get ip address from request object by request.connection.remoteAddress 回答2: To get the Ip address of your User var app = require('express')(); app.get("/ip", (req, res) => { console.log(req.ip) // "::ffff:127.0.0.1" ::ffff: is a subnet prefix for IPv4 (32 bit) let ip = req.ip.split(':'); console

How to get user's IP address in a bot with node.js?

由 女生的网名这么多〃 提交于 2021-02-17 05:27:43
问题 I am writing a bot in node.js. May I know how can I insert code to console.log the IP address of message sender please? I need the IP address to perform some auto-log in. Many Thanks!! 回答1: You can get ip address from request object by request.connection.remoteAddress 回答2: To get the Ip address of your User var app = require('express')(); app.get("/ip", (req, res) => { console.log(req.ip) // "::ffff:127.0.0.1" ::ffff: is a subnet prefix for IPv4 (32 bit) let ip = req.ip.split(':'); console

Apache 2.4.x ip blacklist

由 隐身守侯 提交于 2021-02-15 09:23:50
问题 I'm looking for an easy way to blacklist IP addresses in Apache 2.4.x. My web site logs ip addresses that tried illegal operations into a text file. I would like to use this text file within Apache to deny all access to all vhosts to this ip list. What would be the best way (easiest and least resource consuming way) ? Found this but this is only for 2.2.. Not sure how this applies to 2.4.. Cheers. edit: this is a windows x64 box running apache x64 回答1: @vastlysuperiorman called it right, csf

Apache 2.4.x ip blacklist

由 妖精的绣舞 提交于 2021-02-15 09:17:33
问题 I'm looking for an easy way to blacklist IP addresses in Apache 2.4.x. My web site logs ip addresses that tried illegal operations into a text file. I would like to use this text file within Apache to deny all access to all vhosts to this ip list. What would be the best way (easiest and least resource consuming way) ? Found this but this is only for 2.2.. Not sure how this applies to 2.4.. Cheers. edit: this is a windows x64 box running apache x64 回答1: @vastlysuperiorman called it right, csf

图解TCP-IP协议

由 强颜欢笑 提交于 2021-02-11 21:55:13
本文通过两个图来梳理TCP-IP协议相关知识。TCP通信过程包括三个步骤：建立TCP连接通道，传输数据，断开TCP连接通道。如图1所示，给出了TCP通信过程的示意图。 图1 TCP 三次握手四次挥手 图1主要包括三部分：建立连接、传输数据、断开连接。 1)建立TCP连接很简单，通过三次握手便可建立连接。 2)建立好连接后，开始传输数据。TCP数据传输牵涉到的概念很多：超时重传、快速重传、流量控制、拥塞控制等等。 3)断开连接的过程也很简单，通过四次握手完成断开连接的过程。 三次握手建立连接： 第一次握手：客户端发送syn包(seq=x)到服务器，并进入SYN_SEND状态，等待服务器确认； 第二次握手：服务器收到syn包，必须确认客户的SYN（ack=x+1），同时自己也发送一个SYN包（seq=y），即SYN+ACK包，此时服务器进入SYN_RECV状态； 第三次握手：客户端收到服务器的SYN＋ACK包，向服务器发送确认包ACK(ack=y+1)，此包发送完毕，客户端和服务器进入ESTABLISHED状态，完成三次握手。 握手过程中传送的包里不包含数据，三次握手完毕后，客户端与服务器才正式开始传送数据。理想状态下，TCP连接一旦建立，在通信双方中的任何一方主动关闭连接之前，TCP 连接都将被一直保持下去。 传输数据过程： a. 超时重传 超时重传机制用来保证TCP传输的可靠性

How to bind Network Interface for C++ gRPC client

由 寵の児 提交于 2021-02-11 15:58:58
问题 Our system has an whitelist based on IP address to specify which gRPC client is allowed to connect. once before a new remote gRPC client join the network, the end user has to add its ip into the white list. Most time, it's easy for end user to know which NIC(ip) will be used by the gRPC client, but If there is too many NIC(ip) in the gRPC client node, it's hard for the end user to know which ip will be used before it's running, 'cause which NIC(ip) to be used is determine by the Linux system

Python socket: trying to receive a new TCP message within a while loop

由 依然范特西╮ 提交于 2021-02-11 14:24:12
问题 Hope everyone's doing well. I have a problem I've been trying to solve for a good while now with no success... I have this function that listens for commands sent by pressing various buttons on a website. Once it receives a command it sends it further down the serial port: def write(self): while self.alive: try: data = self.socket.recv(1024) print('Data received through TCP: ' + str(data)) recvdStr = data.decode('UTF-8') if not data: break self.serial.write(recvdString.encode('utf-8')) print(
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