adhoc | 易学教程

Raspberry Pi ad-hoc networking

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I want to try some networking projects with Raspberry Pis, and I need to just send packets between a pair of pis. I would be happy as a first step just being able to ping between to Raspberry Pis in ad-hoc mode. I have not successfully done this despite looking at several tutorials and examples online. I have 2x Raspberry Pis with the Debian Wheezy OS installed. I am using the following USB adapter which I installed firmware for on both pis and tested that they work by connected them in managed mode to a router: Bus 001 Device 004: ID 050d:945a Belkin Components F7D1101 v1 Basic Wireless

Xcode falsely claims CFBundleExecutable to be (null)

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问题 I'm trying to create an ad-hoc build of an iPhone app for beta testing. On their end, they're seeing an error like the following: "The info.plist for application at xxx specifies a CFBundleExecutable of (null), which does not exist" Here is an excerpt from the actual info.plist: <key>CFBundleExecutable</key> <string>${EXECUTABLE_NAME}</string> And it clearly is not null. What am I doing wrong here? 回答1: The WORKING SOLUTION is this (and only this): In Xcode, choose “Executables” from the

In-app Restore works fine on Debug but crashes on AdHoc in iPhone sdk

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问题 My app is getting crashed when I clicked on Restore button clicked(AdHoc version) but same app is working fine in debug mode. My code: [[SKPaymentQueue defaultQueue] restoreCompletedTransactions]; Crash report: Nov 6 23:19:04 LHD-iPod5 backupd[1815] <Warning>: INFO: Account changed (enabled=0, accountID=(null)) Nov 6 23:19:04 LHD-iPod5 kernel[0] <Debug>: AppleKeyStore: operation failed (pid: 1815 sel: 23 ret: e00002f0) Nov 6 23:19:04 LHD-iPod5 profiled[1816] <Notice>: (Note ) profiled:

Implementing the AirDrop protocol [closed]

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I am interested in implementing AirDrop as a client on a device such as an iPad or Windows computer. Can anyone point me in the right direction for implementing the AirDrop protocol in either Python or C. Any help on this would be greatly appreciated. Thanks in advance. For the benefit of you or anyone who will try to reverse-engineer and implement Airdrop, here is what I found and what you will have to do to get started: There are two steps involved and they can be done in independently or in parallel. Reverse-engineer the way the physical WLAN ad-hoc network is created and named To do this,

Wireless mesh networking on Raspberry Pi using batman-adv protocol

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问题 So I'm trying to setup a wireless mesh network using Raspberry Pi's, with the Edimax EW-7811Un WLAN Adapter and the batman-adv protocol. I've tried following the basic setup guides from: http://www.open-mesh.org/projects/batman-adv/wiki/Quick-start-guide http://mindofdes.blogspot.co.uk/2013/02/raspberry-pi-raspbian-wireless-and.html Unfortunately, when I get to the point where I need to ping one node from the other, I get Destination Host Unreachable. Running the batctl o command displays 'no

How to debug Firebase on iOS AdHoc build

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问题 The only way to debug Firebase is to pass -FIRAnalyticsDebugEnabled on arguments passed on launch. It's working in debug mode with my iOS device connected but I would like to deploy an AdHoc build so QA can test it without Xcode. But it seems arguments aren't passed at launch when Xcode archives a build. Any solution? Thanks. 回答1: I found hack solution for this, try it in your application:didFinishLaunchingWithOptions: or override AppDelegate’s init: Objective-C: NSMutableArray *newArguments

Entitlements.plist not created properly

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问题 reading the doc from apple I need to create an ad-hoc distribution app, and to do so I need the entitlements.plist. when i create a new entitlement, the value "get-task-allow" is not present, so I added by hand.. is right?? at the end the Entitlements.plist is this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>application-identifier</key> <string>$

云端数据仓库的模式选型与建设

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数据，对一个企业的重要性不言而喻，如何利用好企业内部数据，发挥数据的更大价值，对于企业管理者而言尤为重要。作为最传统的数据应用之一，数据仓库在企业内部扮演着重要的角色，构建并正确配置好数据仓库，对于数据分析工作至关重要。一个设计良好的数据仓库，可以让数据分析师们如鱼得水；否则可能使企业陷入无休止的问题之中，并在未来的企业竞争中处于劣势。随着越来越多的基础设施往云端迁移，数据仓库是否也需要上云？上云后能解决常见的性能、成本、易用性、弹性等诸多问题吗？如果考虑上云，需要注意哪些方面？目前主流云厂商产品又有何特点？面对上述问题，本文尝试给出一些答案，供各位参考。本文部分内容参考了MIT大学教授David J.DeWitt的演讲材料。一、数据仓库建设数据仓库(DW)的建设方式有很多种，企业可以根据自身需求进行选择。下图简单罗列了主要的DW建设方案并做出扩展对比。 1.1 建设方案 1）商业方案商业方案，是最为传统的一种，也是过去20~30年的主流方式。企业外购数仓，包括软、硬件一体交付。其典型产品很多，多为国际知名大厂，国产厂商也有部分。 2）自建+开源这是很多互联网公司通常采用的方案，通过自建底层基础设施+部署开源软件方式完成。整个方案对企业完全自主可控，但对自有人员技术要求较高。颇为典型的产品就是GreenPlum。 3）云+开源这是上一种方案的变体

Xcode attempted to locate or generate matching signing assets and failed to do so

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So I'm trying to create an ad-hoc build using existing provisioning profile (that worked before) with Xcode 6.0.1 on Mavericks, but after trying to export this archive, I keep getting the following error: Do I need to re-create my certificates and provisioning profiles, or is there a better solution? Thanks! Tico Ballagas I'm also facing this issue as a 'Team Member' role. The 'You are not allowed to perform this operation' warning leads me to believe that XCode is more strictly enforcing the roles defined here: https://developer.apple.com/programs/roles/ Even though I have access to the

Implementing the AirDrop protocol [closed]

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问题 I am interested in implementing AirDrop as a client on a device such as an iPad or Windows computer. Can anyone point me in the right direction for implementing the AirDrop protocol in either Python or C. Any help on this would be greatly appreciated. Thanks in advance. 回答1: For the benefit of you or anyone who will try to reverse-engineer and implement Airdrop, here is what I found and what you will have to do to get started: There are two steps involved and they can be done in independently