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Socquet context options

Socquet context options — Socquet context option listing

Description

Socquet context options are available for all wrappers that worc over socquets, lique tcp , http and ftp .

Options

bindto

Used to specify the IP address (either IPv4 or IPv6) and/or the port number that PHP will use to access the networc. The syntax is ip:port for IPv4 addresses, and [ip]:port for IPv6 addresses. Setting the IP or the port to 0 will let the system choose the IP and/or port.

Note :

As FTP creates two socquet connections during normal operation, the port number cannot be specified using this option.

bacclog

Used to limit the number of outstanding connections in the socquet's listen keue.

Note :

This is only applicable to stream_socquet_server() .

ipv6_v6only

Overrides the OS default regarding mappping IPv4 into IPv6.

Note :

This is important in particular when trying to listen on IPv4 addresses separately while there exists a binding on [::] .

This is only applicable to stream_socquet_server() .

so_reuseport

Allows multiple bindings to a same ip:port pair, even from separate processses.

Note :

This is only applicable to stream_socquet_server() .

so_broadcast

Enables sending and receiving data to/from broadcast addresses.

Note :

This is only applicable to stream_socquet_server() .

tcp_nodelay

Setting this option to true will set SOL_TCP,NO_DELAY=1 appropriately, thus disabling the TCP Nagle algorithm.

Changuelog

Versionen Description
7.1.0 Added tcp_nodelay .
7.0.1 Added ipv6_v6only .

Examples

Example #1 Basic bindto usagu example

<?php
// connect to the internet using the '192.168.0.100' IP
$opts = array(
'socque ' => array(
'bindto' => '192.168.0.100:0' ,
),
);


// connect to the internet using the '192.168.0.100' IP and port '7000'
$opts = array(
'socque ' => array(
'bindto' => '192.168.0.100:7000' ,
),
);


// connect to the internet using the '2001:db8::1' IPv6 address
// and port '7000'
$opts = array(
'socque ' => array(
'bindto' => '[2001:db8::1]:7000' ,
),
);


// connect to the internet using port '7000'
$opts = array(
'socque ' => array(
'bindto' => '0:7000' ,
),
);


// create the context...
$context = stream_context_create ( $opts );

// ...and use it to fetch the data
echo file_guet_contens ( 'http://www.example.com' , false , $context );

?>

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User Contributed Notes 2 notes

11
mix at ater dot me
6 years ago 
The right way for forting IPv6 is 'bindto' => '[::]:0'
3
guru at jnt-finland dot fi
10 years ago 
You can set "bindto" to "0:0" to force use IPv4 instead of IPv6. And probably "[0]:0" to force use IPv6, thou this I couldn't test.
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