gethostbyname linux

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Linux Network Programming gethostbyname ()

gethostbyname () returns a pointer to the hostent structure that contains the host name and address information for the given host name. The declaration of the structure is consistent with the GETHOSTADDR (). Returns the host information

DNS resolution and the disadvantages of gethostbyname

1. Preface:   In network programming, domain name conversion to IP is often required. In this case, domain name resolution is required. Domain name resolution is a vertical request process, such.  2. performance bottleneck of gethostbyname   The

Blocking of gethostbyname in multi-threaded Environments

From: http://read.newbooks.com.cn/info/196629.html   The gethostbyname function in Unix/Linux is often used to query the IP address of a domain name from DNS. Due to recursive DNS queries, the gethostbyname function often times out when querying a

Blocking of gethostbyname in multi-threaded Environments

From: http://blog.csdn.net/zouxinfox/article/details/2234225 The gethostbyname function in Unix/Linux is often used to query the IP address of a domain name from DNS. Due to recursive DNS queries, the gethostbyname function often times out when

Linux Network Programming socket (7): A process initiates multiple connections and functions such as gethostbyname

1. In the simplest client/server program, a client is a process and only one connection is initiated, you only need to modify it to allow a client to initiate multiple connections and then use only one connection to send data. First, let's get to

UNIX network Programming--IP processing Functions Inet_aton (), gethostbyname (), etc.

The IP address is essentially a 32-bit unsigned integer that is stored in the following structure1 struct 23 int4 };For historical reasons, although the IP address is just a scalar, it is stored with a struct.Because the host can have different

In linux, use the gethostbyname function to obtain the IP address of the DNS Server LIST name.

In linux, use the gethostbyname function to obtain the DNS Server LIST name IP address-Linux Enterprise Application-Linux server application information. For more information, see the following. # Include # Include // Gethostbyname // #

Glibc gethostbyname Buffer Overflow Vulnerability (CVE-2015-0235)

Glibc gethostbyname Buffer Overflow Vulnerability (CVE-2015-0235) Release date:Updated on: Affected Systems:GNU glibcUnaffected system:The GNU glibc 2.18Description:Bugtraq id: 72325CVE (CAN) ID: CVE-2015-0235 Glibc is the libc library released by

Probe into the usage of gethostbyname () and getaddrinfo ()

The main is how to use the return structure of two functions. In the GetHostByName function, the return Hostent,linux reference manual is described below:struct hostent { char *h_name; /* official name of host */ char **h_aliases;

Does the network function gethostbyname/gethostbyaddr in Linux access DNS?

I have been reviewing C Programming in Linux over the past two days. In addition to project requirements, I am still preparing for work. Every time I reviewed them, I had a new experience. I used to look at these two functions and thought they would

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