Http Connection Error
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Error 47 is a FASP error that signals the following problems: Problems establishing a FASP connection, likely due to UDP or TCP ports being blocked by a firewall on either the server or client Problems establishing a fallback HTTP connection, likely due to the HTTP http 418 ports being blocked by a firewall on the server or HTTP fallback not being configured http status codes cheat sheet on the server When a high speed transfer using FASP fails, Connect Server is able to retry the transfer using a traditional HTTP (TCP)
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connection. When even this method of transfer fails, the error 47 results. Examples of this error This error is mainly encountered when attempting transfers via the Aspera Connect browser plugin. For example, if you are at a Faspex or
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Shares site, or at a custom application site where you try to upload or download files, you will see the error in the Connect transfers window: The same message appears when using Connect via the command line. Troubleshooting 1. Unless internal policy requires ports to be closed, you should ensure the TCP ports for SSH and the UDP ports for FASP are open to traffic. If FASP-based transfers are being blocked you miss out on the biggest benefits http code 302 of Aspera transfers, including high speeds and rate adjustment. The default UDP port is 33001 and the default TCP port for SSH is 22, though you may have configured these to any port of your choice. Ensure traffic going in and out of these ports is allowed on both the client and server of your transfer. On Windows, you must ensure that a range of UDP ports is not being blocked by a firewall. Because on Windows systems a single UDP port can’t be reused for multiple occurring transfers, each transfer makes use of its own UDP port (for example, in the range 33001-33020). Therefore, you should unblock a range starting at the configured UDP port up to the number of transfers you expect could occur simultaneously at any given time. For more details on TCP/UDP ports and ranges, see the following Knowledge Base article: Firewall Considerations. Below are some Knowledge Base articles that can guide you in testing your port connectivity and unblocking ports if necessary: UDP connectivity testing Using netcat to ascertain if a particular port is open between sender and receiver Configuring Windows Firewall to enable Aspera FASP transfers 2. There may be instances when UDP or TCP ports are temporarily (or permanently) unavailable, in which case transfers will need to be conducted over HTTP. First, ensure that HTTP fallback is properly enabled on your server. There are a few confi
response. 10.1 Informational 1xx This class of status code indicates a provisional response, consisting only of the Status-Line and optional headers, and is terminated by an empty line. There are no required headers for
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this class of status code. Since HTTP/1.0 did not define any 1xx status http 502 codes, servers MUST NOT send a 1xx response to an HTTP/1.0 client except under experimental conditions. A client MUST be prepared http 504 to accept one or more 1xx status responses prior to a regular response, even if the client does not expect a 100 (Continue) status message. Unexpected 1xx status responses MAY be ignored by a https://support.asperasoft.com/hc/en-us/articles/216126998-Error-47-Error-establishing-HTTP-connection-check-HTTP-port-and-firewall- user agent. Proxies MUST forward 1xx responses, unless the connection between the proxy and its client has been closed, or unless the proxy itself requested the generation of the 1xx response. (For example, if a proxy adds a "Expect: 100-continue" field when it forwards a request, then it need not forward the corresponding 100 (Continue) response(s).) 10.1.1 100 Continue The client SHOULD continue with its request. This interim response https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html is used to inform the client that the initial part of the request has been received and has not yet been rejected by the server. The client SHOULD continue by sending the remainder of the request or, if the request has already been completed, ignore this response. The server MUST send a final response after the request has been completed. See section 8.2.3 for detailed discussion of the use and handling of this status code. 10.1.2 101 Switching Protocols The server understands and is willing to comply with the client's request, via the Upgrade message header field (section 14.42), for a change in the application protocol being used on this connection. The server will switch protocols to those defined by the response's Upgrade header field immediately after the empty line which terminates the 101 response. The protocol SHOULD be switched only when it is advantageous to do so. For example, switching to a newer version of HTTP is advantageous over older versions, and switching to a real-time, synchronous protocol might be advantageous when delivering resources that use such features. 10.2 Successful 2xx This class of status code indicates that the client's request was successfully received, understood, and accepted. 10.2.1 200 OK The request h
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this http://stackoverflow.com/questions/16160290/what-status-code-should-i-return-for-a-connection-error site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question https://support.google.com/chrome/answer/6098869?hl=en x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What http code status code should I return for a connection error? up vote 2 down vote favorite I'm writing a service that returns data about another request to the consumer (for example, retrieving the un-shortened URL from a bitly or t.co address). In most situations, I can return a status code to mirror the code I received from the server, but what status code is most http connection error appropriate when my service is unable to connect to the requested URL (if it doesn't exist, for example)? I was thinking 400 Bad Request or 408 Request Timeout, but is there a best practice here? http http-headers share|improve this question asked Apr 23 '13 at 3:14 Problematic 13.3k65179 add a comment| 1 Answer 1 active oldest votes up vote 9 down vote accepted 503 Service Unavailable seems like an appropriate choice. The 4xx codes are meant to indicate the client did something wrong. In the case you specify, it's a service error. share|improve this answer answered Apr 23 '13 at 3:17 PaulProgrammer 6,68911337 My reasoning was that my service is functioning properly, but the client attempted to request a nonexistent URL through it, which struck me as a client error. –Problematic Apr 23 '13 at 3:29 1 How do you know it's nonexistant, or if it's not responding, or if the internet connection is down, or if the routing tables are wonky? I routinely get 50x errors from my corporate proxy when the network flaked out. "Service Unavailable" is agnostic -- it doesn't know if i
Webpage display issues Fix connection errorsYou might get an error message on Chrome if there is a network connection issue. To get started fixing the problem, choose one of the error types below. "This webpage has a redirect loop" or "ERR_TOO_MANY_REDIRECTS" You'll see this error when Chrome stops because the page tried to redirect you too many times. Sometimes, pages don't open because cookies aren't working correctly. To fix the error, trying clearing your cookies. "This site can't provide a secure connection; network-error sent an invalid response" You'll see this error if the webpage had an error that Chrome couldn't understand. To fix the error, contact the website owner. If you own this website, learn how to fix the ERR_SSL_FALLBACK_BEYOND_MINIMUM_VERSION error. "Your connection is not private" or "NET::ERR_CERT_AUTHORITY_INVALID" or "ERR_CERT_COMMON_NAME_INVALID" If you see an error about HSTS, privacy certificates, or invalid names, try these tips: Step 1: Sign in to the portal If you recently connected to a new Wi-Fi network that has a sign-in portal, try signing in. Go to any website starting with http://.Some top websites that still use http:// include: http://www.bbc.com http://www.wsj.com http://www.time.com The Wi-Fi portal sign-in page will open. Sign in to the portal to use the Internet. Step 2: Try opening the webpage in Incognito mode (computer only) Open the page in an incognito window. If the page opens, a Chrome extension is causing the error. To fix the error, turn off Chrome extensions that impact your connection. Step 3: Update Windows (computer only) If you're using a Windows computer, make sure your operating system is up-to-date. Step 4: Temporarily turn off your antivirus You'll see this error if you have any antivirus software that provides "HTTPS protection" or "HTTPS scanning" that prevents Chrome from providing security. To fix the problem, try turning off your antivirus software. If the webpage works after turning off the software, turn off this software when you use secure sites. Remember to turn your antivirus program back