self.preNetnote to self什么意思思

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on 7/18/2013,
Create a SignalR 2.0 (beta) Self Hosted server and connect multiple clients including a JavaScript and a Windows 8.1 Client.
SignalR 1.0 was released early this year with ability to Self Host using a custom OWIN implementation. However, the team hasn&t been sitting idle and fast forward six months SignalR 2.0 is already in Beta now. SignalR 2.0 has some major revisions with respect to
and support for Portable Client Libraries for the .NET client. This has resulted in better support for SignalR for Windows 8.1 clients. Today we&ll checkout how to self host a SignalR 2.0b server, an HTML client on the OWIN server and a Windows 8 Client that communicates with the Self Hosted SignalR Server.
Setting up SignalR and Static files hosting using OWIN components
We are using Visual Studio 2013 Preview to build this sample. This will enable us to build a Windows 8.1 client. The following section is very similar to the steps in our
The major difference being change in the name of the Host from WebApplication to WebApp and the fact that we are using SignalR 2.0 prerelease components as opposed to SignalR 1.x components.
Setting Up SignalR 2.0b Self Hosting
We start off with a simple console application called SelfHostSignalR20. Once the project is ready, we start installing the dependencies from Nuget.
1. OWIN Hosting: This has the WebApp class that provides us the bootstrapping to do &self-hosting&. To install it, we use the following Nuget command. Note the &pre attributes every where in the following commands we are using Pre-release beta components, so some changes are likely to be expected by the time these components go live.
PM& Install-Package Microsoft.Owin.Hosting &pre
2. OWIN HttpListener: This provides us with the bare-bones Http Listener
PM& Install-Package Microsoft.Owin.Host.HttpListener &pre
3. Next we get SignalR: For Self Hosting, SignalR has a separate Nuget package that can actually download the above dependencies if required.
PM& Install-Package Microsoft.AspNet.SignalR.SelfHost &pre
4. We update our Program.cs as follows
using Microsoft.Owin.Husing S
namespace SelfHostSignalR20{class Program{& static string url = &http://localhost:8080&;& static void Main(string[] args)& {&& using (WebApp.Start&Startup&(url))&& {&&& Console.WriteLine(&Server running on {0}&, url);&&& Console.ReadLine();&& }& }}}
This initializes the OWIN WebApp host using the &Startup& class and the URL of http://localhost:8080. Next we&ll see what this magic Startup type does.
5. We add a class called Startup.cs. This class name Startup and the method Configuration with an IAppBuilder input parameter is a convention that Katana looks out for and uses to configure Middleware modules.
using Microsoft.AspNet.SignalR;using Ousing System.IO;using System.Rnamespace SelfHostSignalR20{public class Startup{& public void Configuration(IAppBuilder app)& {&& // Turn cross domain on && var config = new HubConfiguration { EnableCrossDomain = true };&& // This will map out to http://localhost:8080/signalr && app.MapHubs(config);& }}}
Next we hook up a SignalR hub.
6. Add a class called MyHub that has one function SendMessage. The SendMessage function lobs back the Message it receives, to all connected clients.
using Microsoft.AspNet.SignalR;namespace SelfHostSignalR20{public class MyHub : Hub{& public void Send(string message)& {&& Clients.All.addMessage(message);& }}}
At this point, we have SignalR ready to go as a SelfHosted Server. However there are no clients connecting to it. We can confirm that the server is good by running the application and then visiting the http://localhost:8080/signal/hubs, this would download the JavaScript proxy class generated for the Hub class we created above.
With SignalR ready, let&s setup Static Hosting and a JavaScript client.
Setting up Static Hosting and a JavaScript SignalR client
Here things are a little hairy with alpha versions and specific version numbers to retrieve Nuget packages otherwise not available. Static Hosting for OWIN is still pretty much &work in progress& so what we are using the next steps is the bleeding edge of stuff.
Step 1: We install Static HTML hosting middleware modules as follows
PM& Install-Package Microsoft.Owin.FileSystems &version 0.20-alpha-20220-88
PM& Install-Package Microsoft.Owin.StaticFiles &version 0.20-alpha-20220-88
Step 2: Next we install SignalR JavaScript files using the following Nuget command
PM& Install-Package Microsoft.AspNet.SignalR.Js &pre
This adds a Scripts folder with the SignalR JavaScript and jQuery dependency. We can update the jQuery version from 1.6.x to the latest if we want using the update-package command
PM& Update-Package jQuery
Step 3: Once installed, we get back to the Startup class and add the following lines after app.MapHubs(&)
string exeFolder =Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);string webFolder = Path.Combine(exeFolder, &Web&);app.UseStaticFiles(webFolder);
These commands& setup a folder called &Web& as the root of the HTTP server. All files under Web will be statically hosted.
Step 4: We now add a plain vanilla html file to the Web folder called home.html. We also move the Scripts folder added in Step 2 above to the Web folder because we want these scripts to be hosted along with our html file.
We add the following markup to setup two input elements (one to show incoming data, one to input outgoing data) and a button to send the text in the outgoing input element.
&!DOCTYPE html&&html&&head&&title&SignalR Self Host&/title&&script src=&Scripts/jquery-2.0.2.min.js&&&/script&&script src=&Scripts/jquery.signalR-2.0.0-beta2.min.js&&&/script&&script src=&../signalr/hubs&&&/script&&/head&&body&&h1&SignalR Self Hosting&/h1&& &div&&& &div&&&& &textarea id=&messagesText& rows=&15& style=&width:100%&&&/textarea&&& &/div&& &div&& &textarea id=&newMessage& rows=&3&&&/textarea&& &button id=&sendMessage&&Send&/button&&/div&&/div&
Next we add the JavaScript that creates the client instance and registers events that will call the server. In our case, click on the &sendMessage& button will call the Hub&s (on the server) sendMessage function via the proxy. Similarly we have a client side method addMessage that is invoked from the server, and when invoked it updates the messagesText text box. The complete code is as follows:
&script type=&text/javascript&&var hub = $.connection.myH& $(document).ready(function () {&&& $msgText = $(&#messagesText&),&&& $newMessage = $(&#newMessage&);&& });&& hub.client.addMessage = function (message) {&&& $msgText.text($msgText.text() + &\r\n& + message);&& }&& $.connection.hub.start().done(function () {&&& $(document).on('click', '#sendMessage', function () {&&&&& hub.server.send($newMessage.val());&&&&& $newMessage.val('');&&& });&& });&/script&
With this our standalone, ASP.NET free OWIN based Self Hosted SignalR app is ready. If we run it now and open two browsers side by side, we&ll see messages from one dialog being sent to the others.
Building a Windows 8.1 SignalR Client
Having a JavaScript client for SignalR was no biggie, but what would it take if we were to do the same thing in a Windows 8.1 Store app? Well let&s find out.
Before 2.0, SignalR&s .NET client could be used in WPF and Winforms apps but not in WinRT XAML apps. Instead for WinRT, we had to use the JavaScript client. But now the .NET client has been ported as a Portable Client Library enabling it to be used in WinRT XAML Apps.
Today we&ll use the Microsoft.AspNet.SignalR.Client package from Nuget to help us build a WinRT/XAML SignalR client for the above Standalone SignalR server.
Adding a WinRT Project to the Solution
We had started off with a Console App. If you are using any Visual Studio 2013 (preview) edition other than the Express edition, you can add the WinRT project to the same Solution. If not, you can start with a new WinRT Blank project template.
In the MainPage.Xaml, update the markup to contain a &Connect& button, and &IncomingMessages& textblock, an &OutgoingMessage& textbox and a &Send& button. The final UI looks as follows
The corresponding markup is as follows
&Grid Background=&{StaticResource ApplicationPageBackgroundThemeBrush}&&&TextBlock HorizontalAlignment=&Left& Margin=&120,80,0,0& TextWrapping=&Wrap& & Text=&SignalR WinRT Client& VerticalAlignment=&Top& Height=&45& Width=&340& & FontSize=&35& /&&TextBox Margin=&120,142,197,0& TextWrapping=&Wrap& Name=&ServerPath& & Text=&http://localhost:8080/& VerticalAlignment=&Top& FontSize=&22& & Height=&43&/&&Button Content=&Connect& HorizontalAlignment=&Right& Margin=&0,137,77,0& & VerticalAlignment=&Top& Click=&Button_Click& Height=&51& FontSize=&18& & Width=&118&/&&TextBlock x:Name=&IncomingMessages& Height=&266& Margin=&120,190,80,0& & TextWrapping=&Wrap& Text=&& VerticalAlignment=&Top&/&&TextBox x:Name=&OutgoingMessage& Height=&80& Margin=&120,461,197,0& & PlaceholderText=&Message to Send& TextWrapping=&Wrap& Text=&& & VerticalAlignment=&Top& FontSize=&22& /&&Button Content=&Send& HorizontalAlignment=&Right& Margin=&0,458,77,0& & VerticalAlignment=&Top& Width=&118& Height=&86& Click=&SendButtonClick&/&&/Grid&
For this sample I&ve not used Model Binding, instead the code behind looks as follows:
private async void Button_Click(object sender, RoutedEventArgs e){if (hubConnection == null){& hubConnection = new HubConnection(ServerPath.Text);& myHubProxy = hubConnection.CreateHubProxy(&MyHub&);& myHubProxy.On&string&(&addMessage&, OnAddMessage);& await hubConnection.Start();}}volatile string message = &&;private async void OnAddMessage(string msg){message =await dispatcher.RunAsync(CoreDispatcherPriority.Normal, handler);}private void handler(){IncomingMessages.Text = IncomingMessages.Text + Environment.NewLine +}private void SendButtonClick(object sender, RoutedEventArgs e){myHubProxy.Invoke(&Send&, OutgoingMessage.Text);OutgoingMessage.Text = string.E}
Initializing Connection and Handling Server Side actions
The Button_Click event handler initiates the HubConnection using the Server Path provided. By default it is pointing to http://localhost:8080/
Once the Hub Proxy is created, we assign client side event handlers (that the server can call) using the myHubProxy.On&T& syntax. This method takes the name of the server-side method and Action&T&. In our case, we call the OnAddMessage action method, which saves the incoming message in the &message& variable and then updates the UI via dispatch handler. The dispatch handler method simply updates the IncomingMessages text block.
Sending messages to the Hub
The SendButtonClick event handler uses the myHubProxy created during the connection initialization to Invoke server side methods. The first parameter of the Invoke function is the server side method name and next we have the list of parameters accepted by the server.
With this minimal code, we are now ready to demonstrate interaction between a WinRT Client and two JavaScript web clients, talking to each other over SignalR running on (not IIS) but simply an OWIN compliant host independent of IIS
Now we&ll setup the solution to start both the projects together (if you have separate solutions you can run them separately). We split the screen in to the new Windows 8.1 50:50 split, with one side containing the WinRT app and the other split between the IE and FF browsers, pointing to the home.html.
As we can see, the 50:50 split is a pretty effective screen configuration. Once the server has started, we split up the screen as above and then the clients send messages. The messages are broadcasted for all clients receive all messages. As seen below, all three clients have exchanged messages with each other
First WinRT sends out the message &Hello IE and FF&, then IE sends out &Hello WinRT& and finally Firefox sends out &Whassup folks!&.
Recap and Conclusion
To recap, we were able to setup SignalR on a OWIN powered Host and create a simple HTML+JavaScript client without involving any of the heavy weight infrastructure or frameworks. Next we were able to create a functional Windows 8.1 C# + XAML app that could communicate with our barebones SignalR server.
The scope of these kinds of applications at the moment are limited to compact notification and messaging services, but once it goes live, OWIN based servers will gain performance from their granular and mix-and-match type of architecture. At that point OWIN + Web API + SignalR could well become a full-fledged service platform. So watch out for lots of action in the OWIN space.
Was this article worth reading? Share it with fellow developers too. Thanks!
Sumit is a .NET consultant and has been working on Microsoft Technologies since his college days. He edits, he codes and he manages content when at work. C# is his first love, but he is often seen flirting with Java and Objective C. You can follow him on twitter at @ or email him at sumitkm [at] gmail
Great work...
This is a great powerful scenario option to explore not only on WinRT&&but I assume on Windows Phone devices as well. Windows Phone 8.1 coding now is available with WinJS 2.0 and that's a new combination which will really worth taking a close look at.
Comment posted by
on Wednesday, May 20,
Hello, I am using SignalR in WinForms application. Everything works fine on my local network, When setup this application to work on Windows Server, I got message &not respond...&
On windows server I added inbound rules, port, also installed web socket,
Can you give me advice how to setup SingalR in winworms on server..?
my clients are also win forms applications
Regards
Comment posted by
on Wednesday, May 20,
Hello, I am using SignalR in WinForms application. Everything works fine on my local network, When setup this application to work on Windows Server, I got message &not respond...&
On windows server I added inbound rules, port, also installed web socket,
Can you give me advice how to setup SingalR in winworms on server..?
my clients are also win forms applications
Regards
Comment posted by
on Wednesday, May 20,
Hello... nice tutorial..
How can I connect using signalR hub hosted in &self hosted& environment using silverlight client?
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[医]自动吸引
self-praise
['self'preiz]
self-praise
['self'preiz]
自我吹嘘,自夸
以上来源于:《21世纪大英汉词典》
I use every opportunity to increase the self-esteem of others by sincerely praising them.
我抓住每一个我可以真诚地赞美别人的机会来提高别人的自尊。
Develop your child’s self-confidence by praising them appropriately and giving plenty of love and support.
通过适当的鼓励孩子、给予关心和支持,帮助孩子树立起自信心。
This book offers nothing (or hardly anything) provocative and interesting; It's just a self-praising autobiography.
这本书没有提供任何(或几乎任何东西)挑衅性和趣味性,这只是一个自我赞扬的自传。
The People's Daily newspaper has slammed Apple's behavior in China, accusing the company of being "empty and self-praising" in the way it has shrugged off customer complaints and refused journalists' requests for interviews.
Some are essentially self-promotional, praising a group or leader.
McGuffey's Readers, the books on which generations of American children were raised, have plenty of stories treating initiative, hard work and entrepreneurialism as virtues, but just as many stories praising the virtues of self-restraint, personal integrity and concern for those who depend on you.
$firstVoiceSent
- 来自原声例句
请问您想要如何调整此模块?
感谢您的反馈,我们会尽快进行适当修改!
请问您想要如何调整此模块?
感谢您的反馈,我们会尽快进行适当修改!最近微信APP支付遇到的一些坑 - CNode技术社区
这家伙很懒,什么个性签名都没有留下。
最近微信支付莫名其妙的进行了升级,在提交的移动应用开发中微信支付,如果收到的是这样的则无法使用在开放平台的移动应用开发的。因为邮件中少了2个关键的KEY:paySignKey, partnerKey。
一直询问支持,给的都是,研究了下,都是公众号的开发。
后面找到了这份,研究了一番,依旧觉得是公众号的,里面的需要个openid,这分明是微信公众号的开发。后面看到openid只是在公众号开发的时候才传递,所以决定按照这份文档一试。
按照文档中的,当进行到第三步的时候,文档这样说:
步骤3:统一下单接口返回正常的prepay_id,再按签名规范重新生成签名后,将数据传输给APP。参与签名的字段名为appId,partnerId,prepayId,nonceStr,timeStamp,package。注意:package的值格式为prepay_id=wx
但是我我找遍了所有地方,都没有说明这个package具体的事例,以及参加签名的字段partnerId是老文档中的描述,而且这里的字符串怎么突然有大小写了?后面参考了老文档,成功了。
3.5 添加 prepayid 再次签名
获取到 prepayid 后,将参数 appid、appkey、noncestr、package(注意:此处应置为 Sign=WXPay)、partnerid、prepayid、timestamp 签名后返回给 APP,签名方法跟 3.4 节
app_signature 说明一致。得到参数列表如下,通过这些参数即可在客户端调起支付。
“appid”:“wxd930ea5d5a258f4f”, “noncestr”:“7a773f894d”, “package”:“Sign=WXpay”;
“partnerid”:“” “prepayid”:“f”, “sign”:“7ffecb600d810d2d8f28bc2811827b”, “timestamp”:“”
总结下开发:
先按照去获取prepay_id
得到prepay_id, 参考上面的 3.5 添加 prepayid 再次签名
然后再吐槽下微信支付:新接口获取prepay_id确实方便了很多,不需要去获取token、packge,请求与接收都有JSON换成了XML。但接口更新也不正式的声明下,文档也乱写,也没用完全开放出来,坑啊!
#!/usr/bin/env python
# coding=utf-8
xml2json:https://github.com/hay/xml2json
log_debug, log_info 相当于print
from flask import current_app
from aladin.helpers import log_debug, log_info
from hashlib import md5
import requests, time, json
from xml.etree import ElementTree
from xml2json import xml2json
import optparse
class WeiXinPay():
&&&微信支付,返回回客户端需要参数
def __init__(self, order_id, body, total_fee, nonce_str, spbill_create_ip='8.8.8.8'):
:param order_id: 订单ID
:param body: 订单信息
:param total_fee: 订单金额
:param nonce_str: 32位内随机字符串
:param spbill_create_ip: 客户端请求IP地址
self.params = {
'appid': current_app.config['APPID'],
'mch_id': current_app.config['MCHID'],
'nonce_str': nonce_str,
'body': body,
'out_trade_no': str(order_id),
'total_fee': str(int(total_fee)),
'spbill_create_ip': spbill_create_ip,
'trade_type': 'APP',
'notify_url': current_app.config['WEIXIN_NOTIFY_URL']
self.url = 'https://api.mch.weixin.qq.com/pay/unifiedorder' # 微信请求url
self.error = None
def key_value_url(self, value):
&&&将将键值对转为 key1=value1&key2=value2
key_az = sorted(value.keys())
pair_array = []
for k in key_az:
v = value.get(k, '').strip()
v = v.encode('utf8')
k = k.encode('utf8')
log_info('%s =& %s' % (k,v))
pair_array.append('%s=%s' % (k, v))
tmp = '&'.join(pair_array)
log_info(&key_value_url ==& %s & %tmp)
return tmp
def get_sign(self, params):
&&&生成sign
stringA = self.key_value_url(params)
stringSignTemp = stringA + '&key=' + current_app.config['APIKEY'] # APIKEY, API密钥,需要在商户后台设置
log_info(&stringSignTemp ==& %s& % stringSignTemp)
sign = (md5(stringSignTemp).hexdigest()).upper()
params['sign'] = sign
log_info(&sign ==& %s& % sign)
def get_req_xml(self):
&&&拼接XML
self.get_sign(self.params)
xml = &&xml&&
for k, v in self.params.items():
v = v.encode('utf8')
k = k.encode('utf8')
xml += '&' + k + '&' + v + '&/' + k + '&'
xml += &&/xml&&
log_info(xml)
return xml
def get_prepay_id(self):
请求获取prepay_id
xml = self.get_req_xml()
headers = {'Content-Type': 'application/xml'}
r = requests.post(self.url, data=xml, headers=headers)
log_info(r.text)
log_info(&++++++++++++++++++++++++++&)
re_xml = ElementTree.fromstring(r.text.encode('utf8'))
xml_status = re_xml.getiterator('result_code')[0].text
log_info(&result_code ==& %s& % xml_status)
if xml_status != 'SUCCESS':
self.error = u&连接微信出错啦!&
prepay_id = re_xml.getiterator('prepay_id')[0].text
self.params['prepay_id'] = prepay_id
self.params['package'] = 'Sign=WXPay'
self.params['timestamp'] = str(int(time.time()))
def re_finall(self):
&&&得到prepay_id后再次签名,返回给终端参数
self.get_prepay_id()
if self.error:
sign_again_params = {
'appid': self.params['appid'],
'noncestr': self.params['nonce_str'],
'package': self.params['package'],
'partnerid': self.params['mch_id'],
'timestamp': self.params['timestamp'],
'prepayid': self.params['prepay_id']
self.get_sign(sign_again_params)
self.params['sign'] = sign_again_params['sign']
# 移除其他不需要返回参数
for i in self.params.keys():
if i not in [
'appid', 'mch_id', 'nonce_str',
'timestamp', 'sign', 'package', 'prepay_id']:
self.params.pop(i)
return self.params
class WeiXinResponse(WeiXinPay):
微信签名验证
def __init__(self, xml):
:param xml: 支付成功回调的XML
self.xml = xml
options = optparse.Values({&pretty&: False})
self.xml_json = json.loads(xml2json(self.xml, options))['xml']
self.sign = self.xml_json.get('sign', '')
def verify(self):
&&&验证签名&&&
self.xml_json.pop('sign')
self.get_sign(self.xml_json)
if self.sign != self.xml_json['sign']:
log_info(&signValue:%s !=
sing:%s& % (self.xml_json['sign'], self.sign))
return False
return True
不过,建议用nodejs写一个版本玩玩
恩,后面打算写个coffee的。
coffee真的很好用,哇哈哈
帅哥, 里的&下载&链接好像都不能点的,你是怎么下载SDK的呢?
打电话问过腾讯了,DEMO还在写中,只有被扫支付。所以只能看文档摸着过河,和参考原来的微信开放平台的移动应用开发https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&lang=zh_CN
非常感谢,没想到你还真回了,你的信息对我挺有用。
请问nonce_str
这个随机码是不是,获取prepay_id 与 第二次签名时 。都是用同一个。
nonce_str: 32位内随机字符串, 是同一个。
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