getaddrinfo eai again

priority orderNetwork address and host address translation#include uint16_t htons (uint16_t host16bit)//host address to network address translationuint32_t htols (uint32_t host32bit)uint16_t Ntohs (uint16_t net16bit)//network address to host address translationuint32_t Ntohl (uint32_t net32bit)Success: Returns the byte order to convertError:-13. Address format ConversionConverts the address of a decimal representation into a binary#include int Inet_pton (int family,//protocol typeconst char *st

...: nobuilding Erlang library ...: nobuilding Go L., ........ Ibrary ...: nobuilding D library ....: nobuilding NodeJS Library ...: nobuilding Lua Library .................... : noc++ Library: build Tzlibtransport ...: Yes build tnonblockingserver ...: Yes build Tqtcpserver (QT4) ....: No Build tqtcpserver (QT5) ....: noif something is missing so you think should be present,please skim the OU Tput of Configure to find the missingcomponent. Details is present in Config.log. Compile Ma

This article is senlie original, reproduced Please retain this address: http://blog.csdn.net/zhengsenlie /*** Call getaddrinfo and udp_server over UDP **/ # Include "unp. H" # Include Int Main (INT argc, char ** argv) { Int sockfd; Ssize_t N; Char buff [maxline]; Time_t ticks; Socklen_t Len; Struct sockaddr_storagecliaddr; // 1. Use udp_server to obtain the socket If (argc = 2) Sockfd = udp_server (null, argv [1], null ); Else if (argc = 3) Sockf

subclass of urlerror, which is usually generated in a specific HTTP URLs.UrlerrorGenerally, urlerror is generated when there is no network connection (no route to a specific server) or the server does not exist. In this case, the exception also carries the "reason" attribute, which is a tuple and contains an error code and an error message.For example Python code >>> Req = urllib2.request ('HTTP: // www. pretend_server.org ') >>> try: urllib2.urlopen (req) >>> response t

= 1 Tcp_port = "16509" Unix_sock_dir = "/var/run/libvirt" Auth_tcp = "NONE" 3. Start libmongod Sudo/usr/local/sbin/libmongod-D-l (Note: D represents daemon, l Represents listen) View the startup result: 4. Actual operations Sudo virsh list. If the following result is displayed, the installation and configuration are successful. You do not need to perform subsequent operations. Otherwise, you can continue to view the relevant error solution: Possible problem Q2: failed to

How to obtain the mac address and IP address of the local machine using python This article mainly introduces how to obtain the mac address and IP address of the local machine using python. It involves the skills of Python to obtain system information. For more information, see This example describes how to obtain the mac address and IP address of a local machine using python. Share it with you for your reference. The details are as follows: ? 1 2 3 4 5 6 7 8 9 10 Import

Show processlist, showprocesslist Mysql> show processlist; # Check the hosts connected to the mysql server, and lists the databases + ----- + ------ + ----------- + ------ + --------- + ------ + ------- + ------------------ + | Id | User | Host | db | Command | Time | State | Info | + ----- + ------ + ----------- + ------ + --------- + ------ + ------- + ------------------ + | 516 | root | localhost | NULL | Query | 0 | NULL | show processlist | + ----- + ------ + ----------- + ------ + --------

server) or the server does not exist. In this case, the exception also carries the "reason" attribute, which is a tuple and contains an error code and an error message.For example Copy the Code as follows:>>> Req = urllib2.Request ('HTTP: // www.jb51.net ')>>> 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 co

wsasend function on the same socket from different threads at the same time, because the data in the buffer may be in an unpredictable order.Example codeThe following code demonstrates how to use overlapping IoWsasendFunction.# Include # Include # Include # Include # Define data_bufsize 4096# Define send_count 10Void _ cdecl main (){Wsadata WSD;Struct addrinfo * result = NULL,Hints =;Wsaoverlapped sendoverlapped =;Socket listensocket = invalid_socket,Acceptsocket = invalid_socket;Wsabuf databuf

Linux Remote Login ssh password-freeI. Scene company has just a few Linux instances. Now we need to remotely log on to hosts using ssh without a password. II. The principle is very simple. Use ssh-keygen to generate private and public keys on host A, and copy the generated public keys to remote host B, you can use the ssh command to log on to host B on another machine without a password. 3. Step host A: 1. Generate the public key and Private Key Files id_rsa and id_rsa.pub (press Enter 3) [root

1.URLErrorFirst explain the possible causes of Urlerror: Network is not connected, that is, the computer cannot surf the internet Cannot connect to a specific server Server does not exist In the code, we need to surround and catch the corresponding exception with the try-except statement. Here's an example of how it's going to feelImport Urllib2requset = Urllib2. Request (' http://www.xxxxx.com ') try:urllib2.urlopen (requset) except URLLIB2. Urlerror, E:print E.reasonWe us

Establishing a TCP connection is like a telephone system [Nemeth 1997]. The socket function is equivalent to a phone. The BIND function is telling someone about your phone number so that they can call you. The listen function is used to enable the call to ring the bell, so that when an external call arrives, you can hear it. The connect function requires us to know the phone number of the other party and call it. The accept function occurs when the caller responds to the call. The customer ID re

There is an error in the python example in thrift-0.8.0 tutorial, which is caused by the following line of code: transport = TSocket.TServerSocket(9090) The error message is as follows: Traceback (most recent call last):File “./PythonServer.py”, line 95, inserver.serve()File “/usr/lib/python2.7/site-packages/thrift/server/TServer.py”, line 74, in serveself.serverTransport.listen()File “/usr/lib/python2.7/site-packages/thrift/transport/TSocket.py”, line 136, in listenres0 = self._resolve

'getpwnam 'in statically linked applications requires at runtime the shared libraries from the glibc version used for linking/Usr/local/MySQL/lib // libmysqlclient. A (libmysql. c. O): In function 'read _ user_name ':/Home/win/mysql-5.5.29/libmysql. C: 422: Warning: Using 'getpwuid' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking/Usr/local/MySQL/lib // libmysqlclient. A (mf_pack.c.o): In function 'expand _ tilde ':/Home/win/mysq

Reprinted please describe the link to this article 1.download qt-embedded-linux-opensource-src-4.5.2.tar.bz2 : Http://get.qtsoftware.com/qt/source/ Qt-embedded-linux-opensource-src-4.5.2.tar.bz2 2. Configuration ./Configure-Prefix/opt/qt-4.5.2-embedded MIPS-no-OpenGL-QT-mouse-tslib Because I have already compiled all the required libraries, I will not describe them here. The configuration result is as follows: Build... libs examples demos docs translationsConfiguration ....... cross_compile r

I recently read the book "Advanced Programming in UNIX environments". I have been interested in network programming, so I jumped to the web socket chapter. This chapter contains an example program: a tcp client sends a connection request to the server. After receiving the request, the server calls the uptime command. Return the result to the client and print it out. Because I have just read the thread chapter, I want to transform the server into a multi-threaded one to serve multiple threads at

indicates the name of the server. Note that this name is a unique name that identifies the computer on the network. If needed, you can use getaddrinfo to resolve the network name to the IP address of the computer. For folder-type nodes, it indicates the specific path of the folder. If you need to map a folder to a local network disk, you must set the lplocalname in the format of X:, indicating that you want to map the folder to a local Z disk. The i

, thread = A table-type variable, WRK, is a global variable that modifies the table, affecting all requests.Method: Wrk.fomat wrk.lookup Wrk.connect function wrk.format(method, path, headers, body) wrk.format returns a HTTP request string containing the passed parameters merged with values from the wrk table. 根据参数和全局变量wrk，生成一个HTTP rquest string。 function wrk.lookup(host, service) wrk.lookup returns a table containing all known addresses for the host and service pair. This co

...: nobuilding Haskell Library .....: nobuilding Perl Library ...: nobuilding PHP Library, ..... ...: nobuilding Erlang library ...: nobuilding Go Library .....: nobuilding D Library .......: Nobui........... Lding NodeJS Library ...: nobuilding Lua library ...: noc++ library:build tzlibtransport ....: Yes, Buil, and so on. D tnonblockingserver. : Yes Build Tqtcpserver (QT4) ...: No build tqtcpserver (QT5) ....: noif something is missing so you think should Be present,please skim the output

methods commonly used in Urllib.error, Urlerror and Httperror. Urlerror is a subclass of OSError,Httperror is a subclass of Urlerror, the response of HTTP on the server will return a status code, according to this HTTP status code, we can know whether our visit is successful.UrlerrorUrlerror is usually caused by the network cannot connect, the server does not exist and so on.For example, to access a URL that does not existImport Urllib.errorimport Urllib.requestrequset = urllib.request.Request