getaddrinfo eai again

Directory:AbnormalAddress familySocket typeModule methodSocket object and instance methodThe socket module provides a low-level network connection interface in Python for operation of socket operations.AbnormalA total of 4 exceptions are defined for the socket module:Socket.errorA socket-related error will throw the exception, the accompanying value is a string that interprets the error message, or a system call (errno, String) is returned in the form of an exception. Now Socket.error is a subcl

... from XXX where ID in (' 1 ', ' 2 ', ' 3 ', ' 4 ') five, multi-parameter transmission of the annotated mode is shown:id= "getaddrinfo" resultmap="Com.xxx.xxx.AddrInfo" > select * from Addr__info Where Addr_id=#{addrid} and Corp_id=#{corpid}select> ago in select> If you want to bring parametertype in the statement, you can not write this now. Six, SelectList () can only pass one parameter, but the actual required parameter must conta

;getaddrinfo (host,server,hints, RES);//4. Getting information about the socket communication addressPrint_family (P_addr_info);//5. Displaying information about the socket communication addressPrint_type (P_addr_info);//These functions are defined by themselvesPrint_protocol (P_addr_info); Print_host_name (P_addr_info); Print_ipaddress (P_addr_info); Print_port (P_addr_info); Freeaddrinfo (res);//6. Releasing a socket address linkCrossi

("Inet_aton");Exit (Exit_failure);}printf ("addr = 0x%-10x\n", addr.s_addr);printf ("%s\n", Inet_ntoa (addr));Exit (exit_success);}[Email protected]:~/tmp/network$./a.out 127.0.0.1addr = 0x100007f127.0.0.1Char *inet_ntoa (structin) { staticchar buf[inet_ Ntoa_max_len]; return inet_ntoa_r (in, buf);}Attention:1, the return value of Inet_ntoa is a static type of char * pointer, so you need to pay attention when using (non-reentrant, you can use the thread-safe inet_ntoa_r function instead

,link,app of parts of a network. The app is using network. Host is a network terminal, such as a laptop computer. Router to the links between the transmission of information, such as CABLE/DSL modem. Link connects nodes, such as Wired, wireless. Types of links There are three kinds: Full-duplex dual work, both sides can communicate at the same time, Half-duplex half-duplex, both sides of the non-simultaneous communication; simplex single-work, one-way communication. Networks named according to s

displays the following rows. For example, we know that when a person fails to log on as an administrator and their IP address does not have reverse resolution, it means they may not have a valid domain name. This is very suspicious!$ Grep-B 3-A 2 'invalid user'/var/log/auth. logApr 28 17: 06: 20ip-172-31-11-241 sshd [12545]: reverse mapping checking getaddrinfo for216-19-2-8.commspeed.net [216.19.2.8] failed-possible break-in attempt!Apr 28 17: 06: 2

, Local_hostname=none, Key=none, cert=none): Self.cert = cert Self.key = key Smtplib. Smtp.__init__ (self, host, Port, Local_hostname) def connect (self, host= ' localhost ', port=465): If not PO RT and (Host.find (': ') = = Host.rfind (': ')): i = Host.rfind (': ') if I >= 0:host, p ORT = Host[:i], host[i+1:] try:port = int (port) except Valueerror:raise Socket.error, "nonnumeric port" if not Port:port = 654 if self.debuglevel > 0:print>>stderr, ' Co Nnect: ', (host, port) msg = "

This article describes how to obtain the mac address and IP address of a local machine using python, and describes how to obtain system information using Python, for more information about how to obtain the mac address and IP address of a local machine using python, see the following example. Share it with you for your reference. The details are as follows: Import sys, socketdef getipaddrs (hostname): result = socket. getaddrinfo (hostname, None,

This article describes how to implement the socket communication between the python Server and the android client. The example details how to implement the Python Server and the corresponding Android client, for more information about how to communicate with the android client socket, see the following example. Share it with you for your reference. The specific implementation method is as follows: First, use python on the server side. The following is the python code: The code is as follows: #

)? Sock_dgram:sock_stream;snprintf (port_buf, sizeof (PORT_BUF), "%d", port);Getaddrinfo (interface, Port_buf, hints, ai);If interface is a hostname, then there may be multiple IPsfor (next= Ai; next; next= Next->ai_next) {Conn *listen_conn_add;Create a socket and set it to a non-blockingSFD = New_socket (next);//Calling the socket functionBind (SFD, next->ai_addr, Next->ai_addrlen);success++;Listen (sfd, settings.backlog);The function conn_new regist

I was strange, in the Win32 project to import the # include Inet_ntop (): Converts an IPV4 or IPV6 Internet network address to a string in Internet standard format.const char *inet_ntop (int af, const void *SRC, char *dst, socklen_t cnt) { if (af = = af_inet) { struct sockaddr _in in; memset (in, 0, sizeof (in)); in.sin_family = af_inet; memcpy (in.sin_addr, SRC, sizeof (struct in_addr)); Getnameinfo (struct sockaddr *) in, sizeof (struct socka

() function, allowing remote attackers to execute arbitrary programs and control the system. However, Talos Group believes that this major vulnerability is not so terrible. One of the reasons is that these two features did not support IPv6, so they were gradually eliminated about 15 years ago. getaddrinfo (), which supports IPv6 and is used to replace the above features, does not have this vulnerability. Second, you must accept the Host Name and sti

additional bytes to addr. If you put less, it will be reflected by changing the value of addrlen. Similarly, if an error occurs,-1 is returned and the global error variable errno is set. The following is an example: # Include # Include # Include # Include # Define MYPORT "3490" // the port users will be ing # Define BACKLOG 10 // how many pending connectionsqueue will hold Int main (void) { Struct sockaddr_storage their_addr; Socklen_t addr_size; Struct addrinfo hints, * res; Int sockfd,

Username $ Mail-> Password = SMTP_PASS; // SMTP server Password $ Mail-> From = SERVICE_MAIL; // you can specify the sender address. $ Mail-> FromName = SERVICE_NAME; // you can specify the sender name. $ Mail-> AddAddress ($ email, $ user); // add the recipient address $ Mail-> AddReplyTo (SERVICE_MAIL, SERVICE_NAME); // you can specify a reply address. $ Mail-> WordWrap = 50; // Set the display format $ Mail-> IsHTML (true); // you can specify html for an em

PHP_NETWORK_GETADDRESSES: GETADDRINFOFAILED solution. When collecting FTP data, you need to use a PHP function ftp_connect, which establishes a new FTP connection. if a connection id is returned successfully, if it fails, FALSE is returned. a PHP function ftp_connect is required for FTP data collection. this function creates a new FTP connection. if it succeeds, a connection id is returned, otherwise, FALSE is returned. Ftp_connect () opens an FTP connection. the host parameter is the server to

this case, the exception also carries the "reason" attribute, which is a tuple and contains an error code and an error message.For example The code is as follows: >>> Req = urllib2.Request ('http: // www.bitsCN.com ')>>> Try: urllib2.urlopen (req)>>> Failed t URLError, e:>>> Print e. reason>>>(4, 'getaddrinfo failed ') HTTPErrorThe response of each HTTP response object on the server contains a number "status code ". Sometimes the status code indica

*** 31 if not isinstance (max_connections, (int, long) or max_connections Execute_command finally calls the Connection. send_command method, closes the Connection as the Connection. disconnect method, and implements the Connection class: Class Connection (object): "Manages TCP communication to and from a Redis server" def _ del _ (self): # Call disconnect to release the Connection try: self. disconnect () failed t Exception: pass The core connection establishment method is implemented thro

. Search keyword lsnrctl slow/tnsping keyword found related documents:Bug 8307164:tnsping 11G USING DNS and not HOSTS FILEListener Startup or Connections Hang in 11g (Doc ID 803838.1)11g:remote connections Take Very Long to establish (Doc ID 856820.1)These documents allow you to know that the resolution of the host name in Oracle 10g uses the gethostbyname () function, and the use of the getaddrinfo () function is used in 11g. This function is for/etc

setgroups requires superuser privilege calls, and because initgroups needs to call Setgroups, initgroups can be called only by super users.6.7 Other data filesIn addition to the password and group files mentioned above, Linux has several files with similar concepts. The book gives a table to summarize the above content. Description Data files Header file Structure Additional Subtraction search function Password /etc/passwd passwd

: Google's V8 engine uses the TCP protocol with built-in governor, and node encapsulates some commands in the client. You can use node debug test. js to start debugging. DNS: DNS resolution module. In addition to lookup, the resolution functions in this module use C-Ares asynchronous resolution. The lookup function uses the getaddrinfo synchronization method to parse data. C-Ares should be used when a large number of DNS resolution tasks are requ