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问题 I would like to push data to users every 2 min. Using EventSource requires additional pushing null-byte every 29 sec to keep the connection open. WebSocket doesn't require such ping. Why is the EventSource connection regularly closed and reopened? Is it because there is no good built-in way in HTTP to check if the connection is still open or other reason? 回答1: The Server-Sent Events (Eventsource) API is layered on HTTP. WebSocket is layered on TCP (but has an HTTP compatible handshake). Both

问题 I would like to push data to users every 2 min. Using EventSource requires additional pushing null-byte every 29 sec to keep the connection open. WebSocket doesn't require such ping. Why is the EventSource connection regularly closed and reopened? Is it because there is no good built-in way in HTTP to check if the connection is still open or other reason? 回答1: The Server-Sent Events (Eventsource) API is layered on HTTP. WebSocket is layered on TCP (but has an HTTP compatible handshake). Both

问题 I have a WCF service consume by both AJAX and C# application, I need to send a parameter through the HTTP request header. On my AJAX I have added the following and it works: $.ajax({ type: "POST", url: this.tenantAdminService, beforeSend: function (req, methodName) { req.setRequestHeader("AdminGUID", adminGuid); } and on the WCF server side I do the following to Get the header: string adminGUID = System.Web.HttpContext.Current.Request.Headers["AdminGUID"]; What is the C# equivalent? How can I

问题 How do I (and is it possible) to enable http2 over plain http in the C# Kestrel web server? All Microsoft documentation indicates that https/TLS is required, but I have services that will be running behind a load-balancer or nginx and as such don't need a second layer of https. The official http2 spec indicates that https is not required. 回答1: Scenarios to use unencrypted http2 are load balancers, proxies, etc. You must do three things to use http2 over unencrypted channel. Setup Kestrel to

问题 How do I (and is it possible) to enable http2 over plain http in the C# Kestrel web server? All Microsoft documentation indicates that https/TLS is required, but I have services that will be running behind a load-balancer or nginx and as such don't need a second layer of https. The official http2 spec indicates that https is not required. 回答1: Scenarios to use unencrypted http2 are load balancers, proxies, etc. You must do three things to use http2 over unencrypted channel. Setup Kestrel to

问题 How do I (and is it possible) to enable http2 over plain http in the C# Kestrel web server? All Microsoft documentation indicates that https/TLS is required, but I have services that will be running behind a load-balancer or nginx and as such don't need a second layer of https. The official http2 spec indicates that https is not required. 回答1: Scenarios to use unencrypted http2 are load balancers, proxies, etc. You must do three things to use http2 over unencrypted channel. Setup Kestrel to

问题 I hope you don't frown on me too much, but this should be answerable by someone fairly easily. I want to read a file on a website into a string, so I can extract information from it. I just want a simple way to get the HTML source read into a string. After looking around for hours I see all these libraries and curl and stuff. All I need is the raw HTML data. I don't even need a definite answer. Just something that will help me refine my search. Just to be clear I want the raw code in a string

问题 I hope you don't frown on me too much, but this should be answerable by someone fairly easily. I want to read a file on a website into a string, so I can extract information from it. I just want a simple way to get the HTML source read into a string. After looking around for hours I see all these libraries and curl and stuff. All I need is the raw HTML data. I don't even need a definite answer. Just something that will help me refine my search. Just to be clear I want the raw code in a string

问题 I hope you don't frown on me too much, but this should be answerable by someone fairly easily. I want to read a file on a website into a string, so I can extract information from it. I just want a simple way to get the HTML source read into a string. After looking around for hours I see all these libraries and curl and stuff. All I need is the raw HTML data. I don't even need a definite answer. Just something that will help me refine my search. Just to be clear I want the raw code in a string

问题 chrome dev tools - displays some http header with a leading : (not sure why it does with some and not others). One of these is the http header authority which is displays as: authority:api.somedomain.com However this is listed in the list of http headers on Wikipedia. Is this a new HTTP2 header or is possible to define any new request field in the headers -or are these fixed? 回答1: These are Pseudo-Header Fields defined in the new HTTP/2. HTTP/1.x used the message start-line to represent