handshake

问题 I am using a Java 1.7 application running on a JBoss7.0.2.Final server. I created a REST endpoint to handle user login. This works fine, but when I call Google's recaptcha (v2) url (https://www.google.com/recaptcha/api/siteverify), I get the following error: javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure This was working with no errors yesterday, and there have been no changes on our server, so I suspect something might have changed on googles end. Question Does

问题 I am running the "weathercan" data package (https://cran.r-project.org/web/packages/weathercan/index.html; https://github.com/ropensci/weathercan) and keep getting an error when trying to retrieved data from the Environment and Climate Change historic weather data website. I've re-installed the package, I even reinstalled R and RStudio after deleting everything R from my system, but the error persists. The package works fine when I look up stations up, e.g., stations_search(coords = c(44

问题 This question was migrated from Information Security Stack Exchange because it can be answered on Stack Overflow. Migrated last month . I have an embedded IOT device connected to real time DB FireBase. However, the server cancel the TLS handshake with fatal alert 0x46 = protocol_version. I have managed to get an hex dump of the whole handshake process. Can someone explain me why the handshake was canceled? My device is using TLS V1.2 as firebase expected as it can be seen in the header (16 3

问题 This question was migrated from Information Security Stack Exchange because it can be answered on Stack Overflow. Migrated last month . I have an embedded IOT device connected to real time DB FireBase. However, the server cancel the TLS handshake with fatal alert 0x46 = protocol_version. I have managed to get an hex dump of the whole handshake process. Can someone explain me why the handshake was canceled? My device is using TLS V1.2 as firebase expected as it can be seen in the header (16 3

问题 When reading TCP source code, I find a confused thing: I know TCP has two queues in 3 way handshake: The first queue stores connections which server has received the SYN and send back ACK + SYN , which we call as syn queue . The second queue stores the connections that 3WHS are successful and connection established, which we call as accept queue . But when reading codes, I find listen() will call inet_csk_listen_start() , which will call reqsk_queue_alloc() to create icsk_accept_queue . And

问题 I am trying to build a scapy 3 way handshake. But when I send an Acknowledgement packet in response of SYN-ACK packet, I receive a FA packet instead of completion of 3 way handshake. My code is. from scapy.all import* ip = IP(dst = "192.168.0.1") syn = TCP(dport=35021, flags="S", seq=100) synack = sr1(ip/syn, iface = "D-Link DUB-E100 USB 2.0 Fast Ethernet Adapter") ack = TCP(dport=35021, flags="A", seq=101, ack=synack.seq+1) ans=sr1(ip/ack, iface = "D-Link DUB-E100 USB 2.0 Fast Ethernet

问题 [This is a duplicate of socket.io issue #2717 on Github. No answers there, I'd love to get some troubleshooting hints...] I have a test page (below) that creates a socket.io connection back to the server, then listens for and logs 'time' messages. It works as expected for recent Chrome and Safari on OSX 10.10.5. I'm using Socket.io 1.5.0 for all tests. With Firefox 49.0.1, each POST request gets a response with bad handshake method . There is no Socket.io connected... message in the console,

来源： https://stackoverflow.com/questions/63473220/error-during-websocket-handshake-unexpected-response-code-504-nginx-and-webs

问题 I have exhausted my capabilities researching and experimenting to solve this problem. I've tried Trust Managers, ssl socket factories, hostName verifiers, scheme registry, ssl context modifications, etc. Can someone please help me? The program is: import java.io.BufferedReader ; import java.io.InputStreamReader ; import java.io.Reader ; import java.net.URL ; import java.net.URLConnection ; import java.security.cert.X509Certificate ; import javax.net.ssl.HostnameVerifier ; import javax.net.ssl

问题 I have exhausted my capabilities researching and experimenting to solve this problem. I've tried Trust Managers, ssl socket factories, hostName verifiers, scheme registry, ssl context modifications, etc. Can someone please help me? The program is: import java.io.BufferedReader ; import java.io.InputStreamReader ; import java.io.Reader ; import java.net.URL ; import java.net.URLConnection ; import java.security.cert.X509Certificate ; import javax.net.ssl.HostnameVerifier ; import javax.net.ssl