![]() ![]() They provide HTTP messages through config files (for proxies or servers), APIs (for browsers), or other interfaces. Web developers, or webmasters, rarely craft these textual HTTP messages themselves: software, a Web browser, proxy, or Web server, perform this action. In HTTP/2, the once human-readable message is now divided up into HTTP frames, providing optimization and performance improvements. In HTTP/1.1, and earlier versions of the protocol, these messages were openly sent across the connection. HTTP messages are composed of textual information encoded in ASCII, and span over multiple lines. There are two types of messages: requests sent by the client to trigger an action on the server, and responses, the answer from the server. HTTP messages are how data is exchanged between a server and a client. Experimental Feature-Policy: xr-spatial-tracking.Experimental Non-standard Feature-Policy: unsized-media.Experimental Non-standard Feature-Policy: unoptimized-images.Experimental Non-standard Feature-Policy: sync-xhr.Experimental Feature-Policy: speaker-selection.Experimental Feature-Policy: screen-wake-lock.Experimental Feature-Policy: publickey-credentials-get.Experimental Feature-Policy: picture-in-picture.Experimental Non-standard Feature-Policy: oversized-images.Experimental Feature-Policy: magnetometer.Experimental Non-standard Feature-Policy: legacy-image-formats.Experimental Non-standard Feature-Policy: layout-animations.Experimental Feature-Policy: encrypted-media.Experimental Feature-Policy: document-domain.Experimental Feature-Policy: ambient-light-sensor.Experimental Feature-Policy: accelerometer.Reason: CORS preflight channel did not succeed.Reason: CORS header 'Origin' cannot be added.Reason: Credential is not supported if the CORS header 'Access-Control-Allow-Origin' is '*'.Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed.Reason: CORS header 'Access-Control-Allow-Origin' missing.Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channel.Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials'.Reason: Did not find method in CORS header 'Access-Control-Allow-Methods'.Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods'.Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers'.Reason: CORS request external redirect not allowed.Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz'.Experimental CSP: require-trusted-types-for.Non-standard Deprecated CSP: require-sri-for.Non-standard Deprecated CSP: plugin-types.Deprecated CSP: block-all-mixed-content.Experimental Sec-CH-UA-Platform-Version.Experimental Sec-CH-UA-Full-Version-List. ![]() Non-standard Deprecated Large-Allocation.Non-standard Deprecated Accept-CH-Lifetime.In other words, the following will always output a response. The reason I am reporting this as an issue with Packet Sender is that nectat (nc) does not output any blank responses (for me, pretty much ruling out the TCP server as the source of the problem). However, in good network conditions (LAN) the blank results seem to all take around 0.01s whereas the expected results take around 0.006s Response times are all within the margin of network transfers. However is does also blank out other responses and occasionally also render false but very rarely the error string. Seems to happen most when the response would be false or error. Using Packet Sender on both Mac and Windows I am getting intermittent blank responses rendered in the UI. Simple true/ false responses or some data or the string error. Calling a TCP server, it is expected to always output a response.
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