getaddrinfo eai again

1. The confusion points when reading the code:Static intDo_bind (Const Char*host,intPortintProtocolint*family) { intFD; intstatus; intReuse =1; structAddrinfo ai_hints; structAddrinfo *ai_list =NULL; Charportstr[ -]; if(host = = NULL | | host[0] ==0) {host="0.0.0.0";//Inaddr_any} sprintf (Portstr,"%d", Port); memset (ai_hints,0,sizeof(ai_hints)); Ai_hints.ai_family=Af_unspec; if(Protocol = =ipproto_tcp) {Ai_hints.ai_socktype=Sock_stream; } Else{assert (protocol==ipproto_udp); Ai_hints.ai_sock

WinSock network programming BASICS (3) server and winsock network programming In the previous article, we talked about the implementation of a simple client for sending data. Next we will talk about how to send and receive data servers.The server mentioned here is actually a process. It needs to wait for any number of clients to establish a connection with it to respond to their requests. The server must listen for connections with known names (the IP address and port number are in TCP/IP, and t

Python implements forward query of Domain Name System (DNS), pythondns This example describes how to implement forward query of the Domain Name System (DNS) in python. We will share this with you for your reference. The details are as follows: The Domain Name System (DNS) is a distributed database used to replace the host name with an IP address. There are two reasons for DNS: (1) It makes it easy for users to remember their names, rather than pure IP addresses;(2) allow the server to change

Settimeofday (TV, NULL); int main () { int SOCKFD, RC; struct Addrinfo hints, *res = NULL; struct Ntp_packet new_time_packet; memset (hints, 0, sizeof (hints)); hints.ai_family = Af_unspec; hints.ai_socktype = sock_dgram; hints.ai_protocol = ipproto_udp; /* Call the Getaddrinfo () function to get the address information * * rc = getaddrinfo (ntp_server_ip, Ntp_port_str, hints, res); if (RC!= 0) {perror (

specific code.The server-side communication process and its code//1. Setting properties for server-side sockets: Domain, type, and protocol; Char* Host ="localhost";//using localhost IP address:127.0.0.1 Char* Server =" the";//using Port, it must is more then 1024x768 structAddrinfo hints;structAddrinfo *result;structSockaddr_in client_address;memset(hints,0,sizeof(structAddrinfo)); result = NULL; Hints.ai_flags = Ai_numericserv; hints.ai_family = af_inet; Hints.ai_socktype =

The book saw here, I found that I should put the previous Steven wrote the package functions and the like, to achieve a library of their own,Convenient for each call, do not have to write over and over again. The library is used libsock.so. Create your own header file first: unpv13.h #ifndef Unpv13_h_#define Unpv13_h_#include #define MAXLINE 1024#define Listenq 5#define serv_port 9999int tcp_connect (const char *host, const char *serv);/* Other function declarations put this, I jus

... Checking for tm_gmtoff in struct tm... yes Checking for Networking support... Checking for in_addr in netinet/in. h... yes Checking if fd = socket on this platform... yes Checking style of gethostbyname_r routine... glibc2 Checking 3rd argument to the gethostbyname_r routines... char Checking if TCP_NODELAY setting is inherited from listening sockets... yes Checking if O_NONBLOCK setting is inherited from listening sockets... no Checking for TCP_CORK in netinet/tcp. h... yes Checking for TC

info,scope ID) Example:""" PrintSocket.getaddrinfo ("example.org", 80, 0,0,socket. IPPROTO_TCP)PrintSocket.getaddrinfo ("www.baidu.com","http")#Port can be "http" PrintSocket.getaddrinfo ("www.baidu.com"," the") defGetfqdn (name):""". Returns a fully qualified domain name corresponding to the name. If name is ignored, it will be interpreted as a local host. In order to find a qualified domain name, the host name returned by GETHOSTBYADDR () is checked, along with the

case, you can insert the data into the SQL Server database and transmit the data to a dedicated File Server using FTP. Then, use IBM's EAI technology (Enterprise Application Integration, enterprise application itegration) to regularly write files on the file server to the EAI database server using interface specifications, and finally wrote in the Oracle database of EBS.The above architecture is a typical

between various information systems a problem. These problems of Enterprise Informatization have led to the "information islands" problem of enterprises. It is currently a hot topic in the IT field to solve the integration between "information islands. On the other hand, with the wide application of Internet in the enterprise information system, the enterprise information system is extended from serving employees and enterprise management decision-makers separately within the enterprise to exte

is unmatched by other Open-Source ESB. Although mule also provides eclipse-based plug-in tools, it is still not powerful enough. Although Apache synapse has some essential functions of ESB, synapse is essentially a Web Service arbitration framework built on Apache axis2. SYNAPSE focuses on routing, conversion, message verification, and registration based on Web Services and XML standards. It supports transmission protocols such as HTTP, soap, SMTP, JMS, FTP, MTOM/xoppop3/IMAP/SMTP, and multi

-level performance of the N-layer Microsoft * DNA * And. Net * applications. In addition, the vtune enterprise analyzer can provide support for traditional applications through web services, so that developers can use only one tool to analyze hybrid applications. With this tool, you can also view HTTP, DCOM, Microsoft * SQL, and soap response time statistics, and use this information to optimize web service applications.For more information about intel vtune visual Performance Analyzer for. NET

dedicated File Server using FTP. Then, use IBM's EAI technology (Enterprise Application Integration, Enterprise Application Itegration) to regularly write files on the file server to the EAI database server using interface specifications, and finally wrote in the Oracle database of EBS.The above architecture is a typical distributed processing structure, and the core of technology implementation is MSMQ an

institutes, and combines the management and information technology to design the production management system based on the Scientific Research Institute. 1 system analysis and overall design The production management system runs through the whole life cycle of the production process, is completely based on B/s architecture design and implementation, the system development and maintenance only on the server side, basically do the client's 0 management, 0 maintenance. The system uses

distributor management system (DMS) adopts the C/S structure. The database is SQL Server, and the EBS database of the Management Center of the automobile manufacturer is Oracle. Data transmission between two systems is involved.The implementation architecture is as follows: First, Dealer data is transmitted to MSMQ Server through MSMQ. In this case, you can insert the data into the SQL Server database and transmit the data to a dedicated File Server using FTP. Then, use IBM's

-lm-l/usr/lib64/ Sasl2-lsasl2-lssl-lcrypto 'Attention:1 if a/usr/bin/ld:cannot find-lmysqlclient error occurs, make sure that your MySQL path library specifies the correct2 If error occurs while loading shared Libraries:libpcre.so.1:cannot open shared object File:error 40, make sure that/usr/local/lib has a pointer to L ibpcre.so.0.0.1 the link, and then be sure to Ldconfig, I got it for half an hour.3 Please confirm each folder you can see the specific content, such as 64 to be modified to lib6

MSMQ. In this case, you can insert the data into the SQL Server database and transmit the data to a dedicated File Server using FTP. Then, use IBM's EAI technology (Enterprise Application Integration, enterprise application itegration) to regularly write files on the file server to the EAI database server using interface specifications, and finally wrote in the Oracle database of EBS.The above architecture

dedicated File Server using FTP. Then, use IBM's EAI technology (Enterprise Application Integration, Enterprise Application Itegration) to regularly write files on the file server to the EAI database server using interface specifications, and finally wrote in the Oracle database of EBS.The above architecture is a typical distributed processing structure, and the core of technology implementation is MSMQ an

and transmit the data to a dedicated File Server using FTP. Then, use IBM's EAI technology (Enterprise Application Integration, Enterprise Application Itegration) to regularly write files on the file server to the EAI database server using interface specifications, and finally wrote in the Oracle database of EBS.The above architecture is a typical distributed processing structure, and the core of technolog

) is mainly a distributed processing technology. In distributed processing, an important technical element is message processing. the message class has been provided in the messaging namespace and can be used to transmit messages, provided that the message sending and receiver data definitions should have a unified interface specification. For example, dealer, a distributor, is used to develop a large system for an automobile manufacturer.. Net client, which needs to pass data to the management