标题： Client network socket dis connect ed before secu re TLS connection was es tabl ished 我在使用 SAP Spartacus 连接 Commerce Cloud 后台 OCC API 时，遇到如下错误消息： Error: Client network socket dis connect ed before secu re TLS connection was es tabl ished at connR es etException (in

当你使用API时出现下面错误时，请检查你的Http请求头 Error: write EPROTO 600118488:error:100000f7:SSL routin es :OPENSSL_internal:WRONG_VERSION_NUMBER:../../third_party/boringssl/src/ssl/ tls _record.cc:242: View in Console Learn more about troubl es hooting API requ es ts 了解有...

---------------------------------------------------------------------- Remote Administrator 2.2 for Win9X/ME/NT4.0/2000/XP All rights r es erv ed . All rights r es erv ed . Date: June 15th, 2004 ---------------------------------------------------------------------- You can find complete help in 'help.hlp' file ---------------------------------------------------------------------- Radmin ---------------------------------------------------------------------- Contents: * What is Radmin? - What mak es it different from other systems? - Featur es * System requirements * Installation * Radmin Secu rity * How to contact us ---------------------------------------------------------------------- What is Radmin? ---------------------------------------------------------------------- Radmin is a remote control program that lets you work on another computer remotely through your own. You see the remote computer's screen in a r es izable window on your own monitor or as the full screen. Your mouse and keyboard control the remote computer so you can work on the remote computer just as if you were sitting right at The remote computer can be anywhere on the Internet or in your local network . You don't ne ed a fast network connection . Even with a MODEM the screen update spe ed is an accep tabl e 5-10 screen updat es per second. If the remote computer is on your LOCAL NETWORK the typical spe ed is from 100 to 500 screen updat es per second. Often while working in Radmin's full-screen mode, you forget that you are working on a REMOTE computer! Radmin consists of two parts: * The server on the remote computer that sends the remote computer's screen dis play. * The client - also call ed the view er - that shows the remote screen dis play on your own monitor. To get start ed you ne ed to run Radmin server on the remote computer. Then run Radmin client on your own computer. The current version of Radmin requir es a TCP/IP connection between both computers, so you'll ne ed to set this up if they are not already connect ed . ---------------------------------------------------------------------- What mak es it different from other systems? ---------------------------------------------------------------------- Radmin outperforms all other remote control software in spe ed , secu rity and usability. Spe ed : Radmin is the fast es t remote control software available. It is optimiz ed for low-bandwidth connection s such as modems. Connect ing via modem, screen refr es hment rate reach es 5-10 updat es per second. If connect ed to a LAN you can work on remote computer with real-time spe ed , reaching over 100 screen updat es per second. Secu rity is a critical consideration when implementing the remote control software. To maintain the secu rity of data and corporate network r es ourc es , Radmin supports the existing level of environment secu rity and provide its own level as well. Radmin offers the high es t levels of encryption available in its category. Usability: Radmin simple interface is devoid of usel es s 'value add ed featur es ' that bloat software and make it hard to work with. Radmin is extremely easy to learn and use. ---------------------------------------------------------------------- Featur es ---------------------------------------------------------------------- Run as a Service Radmin server can work as a SERVICE under Win9x, ME, NT4.0, Win2000 and Winsows XP. This lets you log a user on or off remotely. NOTE: If Radmin server is start ed on Windows XP, the "Switch User" feature cannot be us ed . Multiple Connection s Support Radmin server supports simultaneous multiple connection s to the same remote screen. Full-Screen, Scal ed and Window ed View Mod es Full-screen mode shows the remote screen full-size on your own monitor Scal ed mode lets you see the remote screen in a window on your monitor scal ed to the remote screen's defin ed size. Video Hook Driver Technology is Us ed Radmin us es video hook kernel mode drivers under Windows NT to capture screen chang es . This boosts the spe ed to hundr ed s of screen updat es per second. File Transfer Current version lets you transfer fil es (l es s than 2Gb) between computers with Windows Explorer like interface. Remote Shutdown Now you don't have to connect in the Full Control mode. Telnet Server Radmin server provid es Telnet acc es s to remote computers (except on Win9x). Windows NT Secu rity Support You can allow remote control, remote view , telnet and file transfer acc es s to specific users or user groups from an NT domain. If a user logg ed into a WinNT domain connect s to Radmin server, the user's current username/password are employ ed by Radmin view er to authorize a connection to the Radmin server. Password Protection If Windows NT secu rity support is switch ed off, acc es s to a remote computer is controll ed by a password. Radmin us es a challenge-r es ponse password authentication method bas ed on 128 bit strong encryption. 128 Bit Strong Encryption of All Data Streams. In the version 2.2 encryption is always enabl ed , it caus es just 5% performance loss. IP Filter Allows an acc es s to the Radmin server only from specifi ed IP addr es s es and subnets. Radmin Supports High-R es olution Mod es Dis play r es olutions up to 2048 X 2048 X 32 bit color are support ed by Radmin. ---------------------------------------------------------------------- System requirements. ---------------------------------------------------------------------- No special requirements for hardware. Requir ed software is Windows 95/ME/NT4.0/2000/XP with TCP/IP protocol install ed . NOTE: If Radmin server is start ed on Windows XP, the "Switch User" feature cannot be us ed . NOTE: Radmin still operat es succ es sfully when the dis play, mouse and keyboard are dis connect ed from the remote computer, however some computers do not boot succ es sfully without a keyboard plugg ed in. For All Operating Systems (Win9x/ME/NT/2000/XP): The computer must have TCP/IP install ed , the most-us ed protocol for network ing computers. Windows NT 4.0: Service pack 4 or higher is requir ed . ---------------------------------------------------------------------- Installation. ---------------------------------------------------------------------- Two computers ne ed to be connect ed by TPC/IP, either on a local network or the Internet. Radmin must be install ed on each computer. Before Installation For All Users: Uninstall any earlier version of Radmin, before installing a newer version. Before Installation For All Users: * Uninstall any earlier version of Radmin, before installing a newer version. For Windows 2000/XP Users: * You ne ed administrator rights to install Radmin Server as a service. For Windows NT 4.0 Users: * You ne ed administrator rights to install Radmin Server as a service and install the driver. * Before installing Radmin's video hook driver be sure that any other Remote Control software that us es video hook driver technology has been remov ed . Running more than one video hook driver can lead to a system crash while booting. Sample applications that use a video hook driver: NetMeeting 3.0+, SMS, Timbuktu. If a problem occurs while booting with the Radmin driver, you can pr es s the '1' (number one) key repeat ed ly during booting and the Radmin driver will not load. ---------------------------------------------------------------------- Limitations ---------------------------------------------------------------------- Radmin file transfer feature supports fil es up to 2Gb and folders with up to 20,000 fil es . Radmin may fail to operate correctly together with some applications causing high CPU usage, also with some specific antiviral software and firewalls. The product may be not compatible with some particular models of hardware, such as routers. ---------------------------------------------------------------------- Radmin Secu rity ---------------------------------------------------------------------- A lot of attention was paid to secu rity issu es in the Radmin d es ign from the outset. Here are some reasons that Radmin's operations are completely secu re: * Radmin 2.2 supports Windows NT/2000/XP user level secu rity. You can allow remote control to specific users or user groups. * If Windows NT secu rity support is switch ed off, acc es s to a remote computer is r es trict ed by password. Remote Administrator us es a challenge-r es ponse password authentication method (MD5 and Twofish crypto algorithms are us ed ). This method is similar to the authentication method us ed in Windows NT, but us es more powerful secu rity keys. * Radmin works in encrypt ed mode, where all data, including screen imag es , mouse movements and keypr es s es are encrypt ed . 128 bit Twofish encryption is us ed . Twofish crypto is dis tingu ished for its combination of spe ed , flexibility and conservative d es ign. * Radmin server has a logging feature. All actions are written to the log file. Event Log support is also includ ed . * Radmin server has an IP filter tabl e that r es tricts remote acc es s to IP addr es s es and network s you specify. * Radmin has a self t es ting code defence that protects the code from being alter ed . ---------------------------------------------------------------------- How to contact us ---------------------------------------------------------------------- Feel free to contact us. All register ed users of Radmin can get full technical support. You can also clear up any qu es tions about Radmin purchasing or offer sugg es tions. If you have something of inter es t about how you use Radmin, we'd be very happy to hear from you. If you simply want to expr es s an opinion about our site, this is how to contact us. General - radmin@radmin.com Purchasing qu es tions - sal es @radmin.com Technical support - support@radmin.com Visit our site for the lat es t news, versions and updat es www.radmin.com You can find complete help in 'help.hlp' file ---------------------------------------------------------------------- All rights r es erv ed . All rights r es erv ed .

Wirel es s sensor network s (WSNs) have attract ed a wide range of dis ciplin es where close interactions with the physical world are es sential. The dis tribut ed sensing capabiliti es and the ease of deployment provid ed by a wirel es s communication paradigm make WSNs an important component of our daily liv es . By providing dis tribut ed , real-time information from the physical world, WSNs extend the reach of current cyber infrastructur es to the physical world. WSNs consist of tiny sensor nod es , which act as both data generators and network relays. Each node consists of sensor(s), a microproc es sor, and a transceiver. Through the wide range of sensors available for tight integration, capturing data from a physical phenomenon becom es standard. Through on-board microproc es sors, sensor nod es can be programm ed to accomplish complex tasks rather than transmit only what they observe. The transceiver provid es wirel es s connect ivity to communicate the observ ed phenomena of inter es t. Sensor nod es are generally stationary and are power ed by limit ed capacity batteri es . Therefore, although the locations of the nod es do not change, the network topology dynamically chang es due to the power management activiti es of the sensor nod es . To save energy, nod es aggr es sively switch their transceivers off and es sentially become dis connect ed from the network . In this dynamic environment, it is a major challenge to provide connect ivity of the network while minimizing the energy consumption. The energy-efficient operation of WSNs, however, provid es significantly long lifetim es that surpass any system that reli es on batteri es . In March 2002, our survey paper “Wirel es s sensor network s: A survey” appear ed in the Elsevier jour- nal Computer Network s, with a much shorter and concise version appearing in IEEE Communications Magazine in August 2002. Over the years, both of th es e papers were among the top 10 download ed papers from Elsevier and IEEE Communication Society (ComSoc) journals with over 8000 citations in total. Since then, the r es earch on the unique challeng es of WSNs has accelerat ed significantly. In the last decade, promising r es ults have been obtain ed through th es e r es earch activiti es , which have enabl ed the development and manufacture of sophisticat ed products. This, as a r es ult, eventually creat ed a brand- new market power ed by the WSN phenomenon. Throughout th es e years, the deployment of WSNs has become a reality. Consequently, the r es earch community has gain ed significant experience through th es e deployments. Furthermore, many r es earchers are currently engag ed in developing solutions that addr es s the unique challeng es of the pr es ent WSNs and envision new WSNs such as wirel es s underwater and underground sensor network s. We have contribut ed to this r es earch over the years through numerous articl es and four additional survey/roadmap papers on wirel es s sensor actor network s, underwater acoustic network s, wirel es s underground sensor network s, and wirel es s multim ed ia sensor network s which were publ ished in different years within the last decade. In summer 2003, we start ed to work on our second survey paper on WSNs to revisit the state-of-the- art solutions since the dawn of this phenomenon. The large volume of work and the inter es t in both academia and industry have motivat ed us to significantly enhance this survey to create this book, which is target ed at teaching graduate students, stimulating them for new r es earch ideas, as well as providing academic and industry prof es sionals with a thorough over view and in-depth understanding of the state- of-the-art in wirel es s sensor network ing and how they can develop new ideas to advance this technology as well as support emerging applications and servic es . The book provid es a comprehensive coverage of According to Google Scholar as of October 2009.xx Preface the pr es ent r es earch on WSNs as well as their applications and their improvements in numerous fields. This book covers several major r es earch r es ults including the authors’ own contributions as well as all standardization committee decisions in a coh es ive and unifi ed form. Due to the sheer amount of work that has been publ ished over the last decade, obviously it is not possible to cover every single solution and any lack thereof is unintentional. The contents of the book mainly follow the TCP/IP stack starting from the physical layer and covering each protocol layer in detail. Moreover, cross-layer solutions as well as servic es such as synchronization, localization, and topology control are dis cuss ed in detail. Special cas es of WSNs are also introduc ed . Functionaliti es and existing protocols and algorithms are cover ed in depth. The aim is to teach the readers what already exists and how th es e network s can further be improv ed and advanc ed by pointing out grand r es earch challeng es in the final chapter of the book. Chapter 1 is a comprehensive introduction to WSNs, including sensor platforms and network architectur es . Chapter 2 summariz es the existing applications of WSNs ranging from military solutions to home applications. Chapter 3 provid es a comprehensive coverage of the characteristics, critical d es ign factors, and constraints of WSNs. Chapter 4 studi es the physical layer of WSNs, including physical layer technologi es , wirel es s communication characteristics, and existing standards at the WSN physical layer. Chapter 5 pr es ents various m ed ium acc es s control (MAC) protocols for WSNs, with a special focus on the basic carrier sense multiple acc es s with collision avoidance (CSMA/CA) techniqu es us ed extensively at this layer, as well as dis tinct solutions ranging from CSMA/CA variants, time division multiple acc es s (TDMA)-bas ed MAC, and their hybrid counterparts. Chapter 6 focus es on error control techniqu es in WSNs as well as their impact on energy-efficient communication. Along with Chapter 5, th es e two chapters provide a comprehensive evaluation of the link layer in WSNs. Chapter 7 is d ed icat ed to routing protocols for WSNs. The extensive number of solutions at this layer are studi ed in four main class es : data-centric, hierarchical, geographical, and quality of service (QoS)- bas ed routing protocols. Chapter 8 firstly introduc es the challeng es of transport layer solutions and then d es crib es the protocols. Chapter 9 introduc es the cross-layer interactions between each layer and their impacts on communication performance. Moreover, cross-layer communication approach es are explain ed in detail. Chapter 10 dis cuss es time synchronization challeng es and several approach es that have been d es ign ed to addr es s th es e challeng es . Chapter 11 pr es ents the challeng es for localization and studi es them in three class es : ranging techniqu es , range-bas ed localization protocols, and range- free localization protocols. Chapter 12 is organiz ed to capture the topology management solutions in WSNs. More specifically, deployment, power control, activity, sch ed uling, and clustering solutions are explain ed . Chapter 13 introduc es the concept of wirel es s sensor–actor network s (WSANs) and their characteristics. In particular, the coordination issu es between sensors and actors as well as between different actors are highlight ed along with sui tabl e solutions. Moreover, the communication issu es in WSANs are dis cuss ed . Chapter 14 pr es ents wirel es s multim ed ia sensor network s (WMSNs) along with their challeng es and various architectur es . In addition, the existing multim ed ia sensor network platforms are introduc ed , and the protocols are d es crib ed in the various layers following the general structure of the book. Chapter 15 is d ed icat ed to underwater wirel es s sensor network s (UWSNs) with a major focus on the impacts of the underwater environment. The basics of underwater acoustic propagation are studi ed and the corr es ponding solutions at each layer of the protocol stack are summariz ed . Chapter 16 introduc es wirel es s underground sensor network s (WUSNs) and various applications for th es e network s. In particular, WUSNs in soil and WUSNs in min es and tunnels are d es crib ed . The channel properti es in both th es e cas es are studi ed . Furthermore, the existing challeng es in the communication layers are d es crib ed . Finally, Chapter 17 dis cuss es the grand challeng es that still exist for the proliferation of WSNs. It is a major task and challenge to produce a textbook. Although usually the authors carry the major burden, there are several other key people involv ed in publishing the book. Our foremost thanks go to Birgit Gruber from John Wiley & Sons who initiat ed the entire idea of producing this book. Tiina Ruonamaa, Sarah Tilley, and Anna Smart at John Wiley & Sons have been incr ed ibly helpful, persistent,Preface xxi and patient. Their assistance, ideas, d ed ication, and support for the creation of this book will always be greatly appreciat ed . We also thank several individuals who indirectly or directly contribut ed to our book. In particular, our sincere thanks go to Özgur B. Akan, Tommaso Melodia, Dario Pompili, Weilian Su, Eylem Ekici, Cagri Gungor, Kaushik R. Chowdhury, Xin Dong, and Agnelo R. Silva for their help. I (MCV) would like to specifically thank the numerous prof es sors who have inspir ed me throughout my ed ucation in both Bilkent University, Ankara, Turkey and Georgia Institute of Technology, Atlanta, GA. I would like to thank my colleagu es and friends at the University of Nebraska–Lincoln and the Department of Computer Science and Engineering for the environment they creat ed during the development of this book. I am es pecially thankful to my PhD advisor, Prof es sor Ian F. Akyildiz, who introduc ed me to the challeng es of WSNs. I wholeheart ed ly thank him for his strong guidance, friendship, and trust during my PhD as well as my career thereafter. I would also like to expr es s my deep appreciation to my wife, Demet, for her love, exceptional support, constructive critiqu es , and her sacrific es that made the creation of this book possible. I am thankful to my mom, Ayla, for the love, support, and encouragement that only a mother can provide. Finally, this book is d ed icat ed to the loving memory of my dad, Mehmet Vuran (or Hem&c ed il;serim as we us ed to call each other). He was the great es t driving force for the realization of this book as well as many other accomplishments in my life. I (IFA) would like to specifically thank my wife and children for their support throughout all th es e years. Without their continuous love, understanding, and tolerance, none of th es e could have been achiev ed . Also my past and pr es ent PhD students, who became part of my family over the last 25 years, d es erve the high es t and sincer es t thanks for being in my life and letting me enjoy the r es earch to the full es t with them. The feeling of seeing how they develop ed in their careers over the years is ind es cribable and one of the b es t satisfactions in my life. Their r es earch r es ults contribut ed a great deal to the contents of this book as well. Ian F. Akyildiz and Mehmet Can Vuran