unable to communicate with printer

Use VC ++ and WinSock to communicate with HTTP servers Ji Hong 1. Introduction---- Windows Socket API is an open network programming interface in Windows that supports multiple protocols. It includes a set of standard Berkeley socket function calls, and important extensions for Windows. Windows Socket, continuously improved and fully supported by many companies, has become a de facto standard for Windows Network Programming. ---- This article describe

Use xmlsocket to communicate with the server in ActionScript 3.0 -- source code A simple xmlsocket-based encapsulation class C ++-Based Server Source Code: Note that the server program inherits an asynchronous socket class of casyncsocket in MFC.

Different switches can communicate with the same VLAN, but different VLANs cannot. I, Ii. IP planning PC0: 192.168.100.100 255.255.255.0PC1: 192.168.110.100 255.255.255.0PC2: 192.168.120.100 255.255.255.0PC3: 192.168.200.100 255.255.255.0PC4: 192.168.210.100 255.255.255.0 Iii. Deployment Solution 1 1) enable -- enter privileged Mode2) conf t -- enter global configuration mode3) vlan 100 -- create a vlan4) name required wei_u2000_sdh_nanan -- indicate

How can I develop a mobile phone software to communicate with the goddess ?, Mobile Software goddess I found that many technical development friends are very real and will not seduce women with rhetoric. So today, I would like to provide you with a novel and creative way to show you how to catch up with the goddess. That is to say that the mobile phone software is installed in the Goddess's mobile phone, and it is not afraid of being rejected in

. Combined with the idea of redux single store, if we watch a globalData directly, we only need to modify the data value to activate the call through water to communicate. The modified data value can be used as the parameter data. For ease of demonstration, we use the oba open source Library as the object monitoring library. If you are interested, you can implement one by yourself. //pageAimport oba from '../../plugin/oba';let app = getApp();Page({ da

Processes communicate through pipelines 1. Process pipelines 1. In Linux shell commands, you can use the pipeline operator '|' to connect processes. Here, we use pipe to achieve this effect in the program. Pipe FunctionThe prototype is as follows: # Include Int * pipe (int file_descriptor [2]); Function Description: File_descriptor is an array pointer consisting of two integer file descriptors. All data written to file_descriptor [1] can be read from

JavaScript enables ifram to access and communicate with PHP instances across domains, and javascriptifram Mutual access between iframe and the main framework 1. Mutual access between the same domain Assume that both a.html and B .html domain are localhost (same domain)In A.html, iframe is embedded into B .html, name = myframeA.html has js function fMain ()B .html has js function named rame ()A.html needs to be implemented to call B .html's javasrame(e

capabilities.setcapability ("Platformversion", "4.4.2"); Set apk path Capabilities.setcapability ("app", App.getabsolutepath ()); Set name time-out time//capabilities.setcapability ("Newcommandtimeout", 30); The time, in milliseconds, to wait for the Webview context to activate//capabilities.setcapability ("Autowebviewtimeout", 10); Wait for the device to be ready when the app is started. The unit is in seconds. Capabilities.setcapability ("Androiddevicereadytimeout", 10

Environment Description:1. System: CENTOS72.docker:docker version 1.3.2Configuration process:1. By means of a bridge:Cat/etc/sysconfig/network-scripts/ifcfg-bond0Bootproto=noneBridge=br0Device=bond0Nm_controlled=noOnboot=yesType=bondUserctl=noSet up a network bridgeCat/etc/sysconfig/network-scripts/ifcfg-br0Bootproto=staticDevice=br0ipaddr=xx.xx.xx.xxnetmask=255.255.0.0Nm_controlled=noOnboot=yesSlave=bond0Userctl=noType=bridgeTo start the container:Docker run--rm-t-i--net=none--name=test Centos:

I believe everyone knows the definition of website construction, and I will not comment on it here. This type of work of professional design companies will be handed over to the customer manager. However, in practice, various technical departments have the opportunity to get in touch, and the requirements for Internet site building services are getting higher and higher, the competition between companies or individuals that undertake business is becoming increasingly fierce. It is a very att

AS3 Five ways to communicate with PHP (based on HTTP protocol) /** * This is based on the HTTP protocol * altogether introduced five methods */package {import Flash.display.Sprite; Import flash.events.*; Import Flash.net.URLLoader; Import Flash.net.URLRequest; Import Flash.net.URLVariables; Import Flash.net.URLRequestMethod; Import Flash.net.URLLoaderDataFormat; Import Flash.net.URLR

PHP Write WebService cannot communicate Client code: $client = new SoapClient (null, Array (' location ' = ' = ' http://192.168.1.100/test/serverSoap.php ', ' uri ' = = '/') '/' Soap/")); echo $client->show (); ?> Server code: Class test{ Function Show () { Return ' The data you request '; } } function GetUserInfo ($name) { Return ' Fbbin '; } $soap = new SoapServer (null, array (' ur

Today opened my Canon camera, appeared "cannot communicate with the battery, whether to use this battery?" "The hint, the test is because the secondary plant batteries used too long battery contact oxidation leads to bad, swap before the purchase of" auxiliary factory handle "hint the same problem, and replace the original battery does not have this hint. In fact, this tip is not a camera failure, this is because these homemade accessories oxidation

PHP Programmer from Maoming ... Write the idea of a programmer in a small city. Hope to communicate with the large city of PHP technology exchange

interface, write your own Onreceivedata method2. Registering listeners3. Call Postrequest's Inirequest method to initialize the request4. Invoke the Execute method of PostrequestPossible improvements:1. If you need more than one observer, you can register only a single listener to register multiple listeners and maintain a list of listeners.2. Inirequest and execute can be merged if the requirements are simple and you want the invocation process to be more conciseIf there is a better way or pro

possible to execute these commands until the file is created, the folder is created, and the file is opened before you open it, otherwise the return fails. The command code is: 0x08, the command format is as follows: // Close file, return operation execution status uint8_t closefile ( void 19 ]={ 0x55 , 0xaa , 0x08 , 0x00 , 0x00 , 0x08 }; // close file command 0x08 uint8_t statusbyte =0xaa ; Statusbyte = SendCommand (Commandtext,6 return Statusbyte;} After writing the program, w

1. Use paping to test the connectivity Linux platform:wget http://www.updateweb.cn/softwares/paping_1.5.5_x86-64_linux.tar.gzOrwget https://zhangtaostorage.blob.core.chinacloudapi.cn/share/paping_1.5.5_x86-64_linux.tar.gzThis is a compressed package, decompression method tar zvxf paping_1.5.5_x86-64_linux.tar.gzHow to use./paping–p 80-c www.xxx.com (the example command is a connectivity test for 500-time Destination IP 80 ports)2, use psping to test the connectivity win platform:Psping:http://ww

Package Cn.itcast.heima2;import Java.util.concurrent.atomic.atomicinteger;import Java.util.concurrent.locks.condition;import Java.util.concurrent.locks.lock;import Java.util.concurrent.locks.reentrantlock;public class Threeconditioncommunication {public static void main (string[] args) {final business business = new Business (), New Thread (new Runnable () {@Override public void run () {for (int i=1;i Three threads communicate with each other thread

resource while other processes are accessing the resource. Therefore, it is primarily used as a means of synchronization between processes and between different threads within the same process.6. Signal (sinal): signal is a more complex mode of communication for notifying the receiving process that an event has occurred.7. Shared Memory: Shared memory is the mapping of memory that can be accessed by other processes, which is created by a process, but can be accessed by multiple processes. share

I believe you all know the definition of website construction, and this is no longer commented on here. Professional design companies are now assigned to the account manager for this type of work, but often in practice, all technical departments have the opportunity to contact, the Internet Construction Station service requirements are more and more high, to undertake business or individual competition is more and more fierce, how to win the favor of customers, how to make each other