1990年代以前，IETF曾为计算机出版界所宠爱。它宣称自己与迟钝、嘈杂的ISO和 ITU-T的官僚作风比较，将是更敏捷、虚心和开放的标准化实体。不幸的是，IETF在整个1980年代的效率不过它相对规模较小的自然结果，之后便消失了。
2019-11-11 09:00
: making request dhcp_discover: sendto(DISCOVER, IP_ADDR_BROADCAST, LWIP_IANA
2024-06-06 06:24
: sendto(DISCOVER, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER)pbuf_add_header: old 0x3fcbf734 new
2023-02-15 06:08
labviewTCP编程里的Open.VI要端口号，请问每台电脑的端口怎么看？是固定的么？
2012-05-07 14:14
tcp-client初始化过，也调用了对应的回调函数，用网络调试助手在计算机上当tcp-server端，能成功连接到服务端的情况是随机的，不是每次都能连接上，而且，对于连接上的情况来讲，tcp-client的端口号会一直在++
2019-08-23 03:48
加载架构“iana-crypt-hash@2014-08-06”。 [INF]：连接到位于 socket=/tmp/sysrepod.sock 的守护进程 Sysrepo 引擎 [ERR]：接收
2023-06-08 06:40
你好， 我在通过i2c向M24SR（带8KB EEPROM）写入NDEF消息时遇到问题。 我可以通过官方M24SR Android应用程序正确编写NDEF文本消息。我能够通过i2c正确读取NDEF文件。 但是，当我尝试通过i2c将''hello world''写入NDEF文件时，M24SR Android应用会读取空的NDEF。这是我尝试过的i2c序列： （杀RF）AC 52 （选择NFC）AC 02 00 A4 00 0C 02 E1 03 D2 AF （读取5个回复字节） 02 90 00 F1 09 （选择CC）AC 03 00 A4 00 0C 02 E1 03 D2 AF （读取5个回复字节）03 90 00 2D 53 （读取CC长度）AC 02 00 B0 00 00 02 6B 7D （7个回复字节读取）02 00 0F 90 00 44 45 （阅读CC文件）AC 03 00 B0 00 00 0F A5 A2 （读取20个读取字节）03 00 0F 20 00 F6 00 F6 00 F6 04 06 00 01 20 00 00 00 90 00 A9 F3 （选择NDEF文件）AC 02 00 A4 00 0C 02 00 01 3E FD （读取5个回复字节）02 90 00 F1 09 （擦除NDEF长度）AC 03 00 D6 00 00 02 00 00 6B 37 （读取5个回复字节）03 90 00 2D 53 （使用''hello world''更新二进制NDEF）AC 02 00 D6 00 02 0B 68 65 6C 6C 6F 20 77 6F 72 6C 64 2F FC （读取5个回复字节）02 90 00 F1 09 （更新NDEF的二进制文件，长度为''hello world''= 11 = 0x0B）AC 03 00 D6 00 00 02 00 0B （读取5个回复字节）03 90 00 2D 53 （取消选择）AC C2 E0 B4 （3个回复字节读取）C2 E0 B4 再次，在此序列之后，当通过i2c读取NDEF时，找到“hello world”，但Android应用程序看到空的NDEF。我尝试在通过i2c阅读Android编写的NDEF时附加相同的“标题”，但是回复没有正确的CRC。 有谁可以帮助澄清实施并指出我正确的方向？ 提前致谢，乔恩#android #ndef＃m24sr以上来自于谷歌翻译以下为原文 Hello, I'm having trouble writing an NDEF message to the M24SR (with 8KB EEPROM) via i2c. I am able to correctly write an NDEF Text Message via the official M24SR Android app. I am able to correctly read the NDEF File via i2c. However, when I try to write ''hello world'' via i2c to the NDEF file, the M24SR Android app reads an empty NDEF. Here is the i2c sequence of what I've tried: (kill RF) AC 52 (select NFC) AC 02 00 A4 00 0C 02 E1 03 D2 AF (5 reply bytes read) 02 90 00 F1 09 (select CC) AC 03 00 A4 00 0C 02 E1 03 D2 AF (5 reply bytes read) 03 90 00 2D 53 (read CC length) AC 02 00 B0 00 00 02 6B 7D (7 reply bytes read) 02 00 0F 90 00 44 45 (read CC file) AC 03 00 B0 00 00 0F A5 A2 (20 readbytes read) 03 00 0F 20 00 F6 00 F6 00 F6 04 06 00 01 20 00 00 00 90 00 A9 F3 (select NDEF file) AC 02 00 A4 00 0C 02 00 01 3E FD (5 reply bytes read) 02 90 00 F1 09 (erase NDEF length) AC 03 00 D6 00 00 02 00 00 6B 37 (5 reply bytes read) 03 90 00 2D 53 (update binary NDEF with ''hello world'') AC 02 00 D6 00 02 0B 68 65 6C 6C 6F 20 77 6F 72 6C 64 2F FC (5 reply bytes read) 02 90 00 F1 09 (update binary of NDEF with length of ''hello world'' = 11 = 0x0B) AC 03 00 D6 00 00 02 00 0B (5 reply bytes read) 03 90 00 2D 53 (deselect) AC C2 E0 B4 (3 reply bytes read) C2 E0 B4 Again, after this sequence, when the NDEF is read via i2c, ''hello world'' is found, but the Android app sees an empty NDEF. I've tried appending the same ''header'' found when reading the Android-written NDEF via i2c, however the replies do not have a correct CRC. Can anyone please help clarify the implementation and point me in the right direction? Thanks in advance, Jon#android #ndef #m24sr
2019-07-25 06:52
也许，但你可以下载它作为SDK的一部分：http：//msdn.microsoft.com/library/defau ... nlevel.htm这是一个可以自由访问的下载。记住，winsock在这一点上相当陈旧;而且你已经掌握了.NET，你可能会更好地对.NET套接字进行一些调查。这里是对Sockets实现的MSDN参考：http：//msdn.microsoft.com/library/default.asp ？url = / library / en-us / cpref / html /frlrfsystemnetsockets.aspÂ_____Â来自：Zafer SAVAS [mailto：zsavas@aselsan.com.tr]发送时间：2006年3月3日09:26转发：VRFS主题：Re：[vrf] winsock issueHi Yoon，MS Winsock ActiveX库不能自由分发。你不能再将ocx文件从另一台PC复制到寄存器来开发你的程序。但是，如果您在安装了MS Winsock ActiveX的平台上编写程序，则可以将vee文件分发到未注册Activex的另一台PC。所以你必须安装Visual C ++才能拥有ActiveX。我建议你使用winsock 2 API（ws2_32.dll）。我记得shawn已经向VRF发布了一个示例VEE代码。你也可以开发一个VEE兼容桥dll.ÂGoodLuckzafer-----原始消息-----来自：HYPERLINK“mailto：yyp_0105@yahoo.com”yoon park到：HYPERLINK“mailto：vrf@agilent.com “VRF已发送：2006年3月1日星期三12:07 AMSubject：[vrf] winsock issuehi all，我正在尝试生成一个带有winsock的UDP数据包，如下面的网站所示。 http://www.evaluationengineering.com/archive/articles/0400soft.htmone我遇到的问题是我无法找到Winsock ActiveX控件库。我已经下载了Visual C ++ Express Edition并购买了Visual Studio .NET和Visual Studio 2005.是该库应该包含在上述任何应用程序中，我只是找不到它们？或者我在错误的地方搜索？请帮助..我有这么多的问题。还有，是否有任何可下载的应用程序免费提供Winsock ActiveX控件？谢谢你！_____ÂYahoo！ MailBring照片生活！ HYPERLINK“http://pa.yahoo.com/*http://us.rd.yahoo.com/evt=39174/*http://photomail.mail.yahoo.com"New PhotoMail让分享变得轻而易举。 ---您目前订阅了vrf：zsavas@aselsan.com.tr要订阅，请发送空白电子邮件请求“join-vrf@lists.it.agilent.com”。要取消订阅，请发送一封空白电子邮件至“leave-vrf@it.lists.it.agilent.com”。要将邮件发送到此邮件列表，请发送电子邮件至“vrf@agilent.com”。如果您需要有关邮件列表的帮助，请发送邮件至“owner-vrf@it.lists.it.agilent.com”。在“www.oswegosw.com/vrf_archive/".·_____ÂDikkat：Bu elektronik posta mesaji kisisel ve ozeldir上搜索”非官方vrf档案“。 Eger size gonderilmediyse lutfen gondericiyi bilgilendirip mesaji siliniz。 FirmamizaÂgelenveÂgidenÂmesajlar病毒taramasindan gecirilmekte，guvenlik nedeni ile kontrol edilerek saklanmaktadir。 Mesajdaki gorusler ve bakis acisi gondericiye ait olup Aselsan A.S. resmi gorusu olmakzorundadegildir.Â_____Â注意：此电子邮件具有特权和机密性。如果您不是预期的收件人，请删除该邮件并通知发件人。出于运营原因并根据合法的商业惯例监控进出公司的电子邮件。提交的任何观点或意见仅为作者的观点或意见，并不一定代表公司的观点。_____ ---您目前订阅vrf为：E***achb@tycoelectronics.com要订阅，请发送电子邮件至：“ vrf-request@lists.it.agilent.com“将主题留空并在邮件正文中只输入单词”subscribe“要取消订阅，请发送空白电子邮件至”leave-vrf@it.lists.it.agilent.com“ 。要将邮件发送到此邮件列表，请发送电子邮件至“vrf@agilent.com”。如果您需要有关邮件列表的帮助，请发送邮件至“owner-vrf@it.lists.it.agilent.com”。在“www.oswegosw.com/vrf_archive/”上搜索“unofficial vrf archive”。 ---如需订阅，请发送电子邮件至：“vrf-request@lists.it.agilent.com”将主题留空并在邮件正文中只放置“订阅”一词取消订阅发送空白电子邮件至“留下 - vrf@it.lists.it.agilent.com”。要将邮件发送到此邮件列表，请发送电子邮件至“vrf@agilent.com”。如果您需要有关邮件列表的帮助，请发送邮件至“owner-vrf@it.lists.it.agilent.com”。在“www.oswegosw.com/vrf_archive/”上搜索“unofficial vrf archive”。 以上来自于谷歌翻译 以下为原文Perhaps, but you can download it as part of the SDK: http://msdn.microsoft.com/library/defau ... nlevel.htmThis is a freely accessable download. Bear in mind that winsock is pretty antiquated at this point; and as you already have .NET in hand, you may be better served to do some investigation into .NET sockets instead.Here is the MSDN reference to the Sockets implementation:http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemnetsockets.asp Â_____  From: Zafer SAVAS [mailto:zsavas@aselsan.com.tr] Sent: 03 March 2006 09:26To: VRFSubject: Re: [vrf] winsock issueHi Yoon,MS Winsock ActiveX library is not freely distributable. you can not just copy the ocx file from another PC an register again to develop your programs. However if you write your programs on a platform where MS Winsock ActiveX is installed, you can distribute the vee file to another PC where Activex was not registered. So you have to install Visual C++ to have the ActiveX. I recommend you to use winsock 2 API (ws2_32.dll). I remember that shawn has posted a sample VEE code to VRF. Also you can developed a VEE compatible bridge dll too. Good Luckzafer----- Original Message ----- From: HYPERLINK "mailto:yyp_0105@yahoo.com"yoon park To: HYPERLINK "mailto:vrf@agilent.com"VRF Sent: Wednesday, March 01, 2006 12:07 AMSubject: [vrf] winsock issuehi all,i am trying to generate a UDP packet with winsock as shown on the below website. http://www.evaluationengineering.com/archive/articles/0400soft.htmone problem that i am faced with is that i cannot locate Winsock ActiveX control library.Âi have downloaded Visual C++ Express Edition and purchased both Visual Studio .NET and Visual Studio 2005.Âis that library supposed to be included in any of the above applications and i just can't locate them? or was i searching at wrong places?Âplease help.. i am having so much problem over this.Âalso, is there any downloadable application out there for free which supplies Winsock ActiveX control? thank you!Â_____  Yahoo! MailBring photos to life! HYPERLINK "http://pa.yahoo.com/*http://us.rd.yahoo.com/evt=39174/*http://photomail.mail.yahoo.com"New PhotoMail makes sharing a breeze. --- You are currently subscribed to vrf as: zsavas@aselsan.com.tr To subscribe send a blank email request to "join-vrf@lists.it.agilent.com". To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "www.oswegosw.com/vrf_archive/".Â_____  Dikkat: Bu elektronik posta mesaji kisisel ve ozeldir. Eger size gonderilmediyse lutfen gondericiyi bilgilendirip mesaji siliniz. Firmamiza gelen ve giden mesajlar virus taramasindan gecirilmekte, guvenlik nedeni ile kontrol edilerek saklanmaktadir. Mesajdaki gorusler ve bakis acisi gondericiye ait olup Aselsan A.S. resmi gorusu olmak zorunda degildir.Â_____  Attention: This e-mail message is privileged and confidential. If you are not the intended recipient please delete the message and notify the sender. E-mails to and from the company are monitored for operational reasons and in accordance with lawful business practices. Any views or opinions presented are solely those of the author and do not necessarily represent the views of the company.Â_____   --- You are currently subscribed to vrf as: E***achb@tycoelectronics.com To subscribe please send an email to: "vrf-request@lists.it.agilent.com" leave the subject blank and in the message body put only the word "subscribe" To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "www.oswegosw.com/vrf_archive/". --- To subscribe please send an email to: "vrf-request@lists.it.agilent.com" leave the subject blank and in the message body put only the word "subscribe" To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "www.oswegosw.com/vrf_archive/".
2019-09-25 11:35
modbus协议是什么？标准的Modbus协议物理层接口有哪几种？ModbusTCP通信方式有哪几种？通信过程是怎样的？
2021-08-09 06:19
探讨互联网IPv6技术的发展与演进
2021-05-25 06:56
