hdmi keep alive

current state of the connection, make a non-blocking, 0-byte Send call. If the call successfully returns or throws a Waewouldblock error code (10035), the socket is still connected, otherwise, the socket is no longer in a connected state. 　　However, I found in practical applications that MSDN's approach to this kind of processing in many cases is not valid, can not detect the network has been abnormally disconnected. So what do we do? We know that TCP has a connection detection mechanism, that

Brief introductionKeep-alive is a configuration parameter in the HTTP request header information, which is commonly known as the HTTP Long connection, HTTP 1.0 and HTTP 1.1 are supported, the property is turned off by default in HTTP1.0, and can be configured to open in header information (Connection keep-alive), HTTP1.1 in this property is enabled by default, th

One. HTTP protocol is a connection protocol, so that each connection to re-open a TCP HTTP socket, the short-term host to the server request will be very slow, if you can maintain the connection, you can save the socket Open,socket close and other times, Early in the http1.0 protocol appended the Keep-alive field, connection:keep-alive, the client sends HTTP cont

Determine the end of an HTTP request in Keep-Alive mode. When a short connection is used, each HTTP request corresponds to a TCP connection. after the request is complete, the connection is immediately disconnected, and the server returns EOF. Therefore, the end of a request can be determined based on EOF. in the short connection mode below, each HTTP request corresponds to a TCP connection. after the reque

Code used to determine the end of an HTTP request in the Keep-Alive mode. Therefore, you can determine the end of a request based on EOF. the following code (PHP) is very common: Copy the code as follows: $ fp is the handle while (!) produced by fsockopen (! Feof ($ fp) {echofgets (so you can judge the end of a request based on EOF. the following code (PHP) is very common: The code is as follows: // $ Fp

This article is an opportunity outline: Existing requirements Advantages and disadvantages of each solution Related issues Extension Keep-alive use of the detailed Existing RequirementsThere are many list data presentation pages in each project, and often include some filter criteria and pagination.Also, clicking on a column in the table requires a route to jump into the

Basic introductionKeep alive can be set at the operating system level for connections made to this machine. A simple TCP packet is returned to the remote host within the set time to detect if the remote host is still responding.There are 2 main application scenarios:1. Know earlier that the remote host was down.Under normal circumstances a host and a Host B have established a connection. A sent a message to the B host, B said received, a began to wait

determine the current status of the connection, please do not block, zero-byte send call. If the call is successful or the waewouldblock error code (10035) is triggered, the socket is still in the connection status; otherwise, the socket is no longer in the connection status. However, in practical applications, I found that this method described by msdn is often ineffective and cannot detect that the network has been disconnected abnormally. What should we do? We know that TCP has a connecti

current status of the connection, please do not block, zero-byte send call. If the call is successful or the waewouldblock error code (10035) is triggered, the socket is still in the connection status; otherwise, the socket is no longer in the connection status. However, in practical applications, I found that this method described by msdn is often ineffective and cannot detect that the network has been disconnected abnormally. What should we do? We know that TCP has a connection detection mech

The version after Haproxy 1.5 supports 5 ways to connect-Kal:keep Alive ("option Http-keep-alive") which is the default Mode:allRequests and responses is processed, and connections remain open but idleBetween responses and new requests. The default way to keep connections-Tun:tunnel ("option Http-tunnel"): This is the

When a short connection is used, each HTTP request corresponds to a TCP connection. after the request is complete, the connection is immediately disconnected, and the server returns EOF. Therefore, you can determine the end of a request based on EOF. the following code (PHP) is very common: The code is as follows: // $ Fp is the handle generated by fsockopen (). While (! Feof ($ fp )){ Echo fgets ($ fp ); } (Note: The short Connection mode is marked with "Connection: close" in the header and

When a short connection is used, each HTTP request corresponds to a TCP connection. after the request is complete, the connection is immediately disconnected, and the server returns EOF. Therefore, you can determine the end of a request based on EOF. the following code (PHP) is very common: The code is as follows: // $ Fp is the handle generated by fsockopen ().While (! Feof ($ fp )){Echo fgets ($ fp );} (Note: The short Connection mode is marked with "Connection: close" in the header and "C

When using short connection mode, each HTTP request corresponds to a TCP connection, the connection is immediately disconnected after the request completes, and the server returns EOF. So you can judge the end of a request based on EOF, the following code (PHP) is common: Copy to ClipboardWhat to refer to: [www.bkjia.com]$FP is a handle produced by Fsockopen () while (!feof ($fp)) { Echo fgets ($FP); } (Note: The short connection mode is marked with "Connection:close" in the head, and the long

The keep-alive feature makes the client-to-server connection persistent, and when a subsequent request to the server occurs, the Keep-alive feature avoids establishing or re-establishing the connection. Most Web servers on the market, including Iplanet, IIS, and Apache, support HTTP

The default connection timeout time of IIS is 2 minutes. Therefore, when the node program uses keep-alive for access, the keep-alive time should not exceed 2 minutes. Otherwise, after the request is complete, the node continues to maintain the connection. If IIS is disconnected after 2 minutes, the underlying TCP of th