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'\" t
.\" Title: zmq_inproc
.\" Author: [see the "AUTHORS" section]
.\" Generator: DocBook XSL Stylesheets v1.76.1 <http://docbook.sf.net/>
.\" Date: 11/23/2012
.\" Manual: 0MQ Manual
.\" Source: 0MQ 3.2.2
.\" Language: English
.\"
.TH "ZMQ_INPROC" "7" "11/23/2012" "0MQ 3\&.2\&.2" "0MQ Manual"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
zmq_inproc \- 0MQ local in\-process (inter\-thread) communication transport
.SH "SYNOPSIS"
.sp
The in\-process transport passes messages via memory directly between threads sharing a single 0MQ \fIcontext\fR\&.
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBNote\fR
.ps -1
.br
.sp
No I/O threads are involved in passing messages using the \fIinproc\fR transport\&. Therefore, if you are using a 0MQ \fIcontext\fR for in\-process messaging only you can initialise the \fIcontext\fR with zero I/O threads\&. See \fBzmq_init\fR(3) for details\&.
.sp .5v
.RE
.SH "ADDRESSING"
.sp
A 0MQ endpoint is a string consisting of a \fItransport\fR:// followed by an \fIaddress\fR\&. The \fItransport\fR specifies the underlying protocol to use\&. The \fIaddress\fR specifies the transport\-specific address to connect to\&.
.sp
For the in\-process transport, the transport is inproc, and the meaning of the \fIaddress\fR part is defined below\&.
.SS "Assigning a local address to a socket"
.sp
When assigning a local address to a \fIsocket\fR using \fIzmq_bind()\fR with the \fIinproc\fR transport, the \fIendpoint\fR shall be interpreted as an arbitrary string identifying the \fIname\fR to create\&. The \fIname\fR must be unique within the 0MQ \fIcontext\fR associated with the \fIsocket\fR and may be up to 256 characters in length\&. No other restrictions are placed on the format of the \fIname\fR\&.
.SS "Connecting a socket"
.sp
When connecting a \fIsocket\fR to a peer address using \fIzmq_connect()\fR with the \fIinproc\fR transport, the \fIendpoint\fR shall be interpreted as an arbitrary string identifying the \fIname\fR to connect to\&. The \fIname\fR must have been previously created by assigning it to at least one \fIsocket\fR within the same 0MQ \fIcontext\fR as the \fIsocket\fR being connected\&.
.SH "EXAMPLES"
.PP
\fBAssigning a local address to a socket\fR.
.sp
.if n \{\
.RS 4
.\}
.nf
// Assign the in\-process name "#1"
rc = zmq_bind(socket, "inproc://#1");
assert (rc == 0);
// Assign the in\-process name "my\-endpoint"
rc = zmq_bind(socket, "inproc://my\-endpoint");
assert (rc == 0);
.fi
.if n \{\
.RE
.\}
.PP
\fBConnecting a socket\fR.
.sp
.if n \{\
.RS 4
.\}
.nf
// Connect to the in\-process name "#1"
rc = zmq_connect(socket, "inproc://#1");
assert (rc == 0);
// Connect to the in\-process name "my\-endpoint"
rc = zmq_connect(socket, "inproc://my\-endpoint");
assert (rc == 0);
.fi
.if n \{\
.RE
.\}
.sp
.SH "SEE ALSO"
.sp
\fBzmq_bind\fR(3) \fBzmq_connect\fR(3) \fBzmq_ipc\fR(7) \fBzmq_tcp\fR(7) \fBzmq_pgm\fR(7) \fBzmq\fR(7)
.SH "AUTHORS"
.sp
This 0MQ manual page was written by Pieter Hintjens <\m[blue]\fBph@imatix\&.com\fR\m[]\&\s-2\u[1]\d\s+2>, Martin Sustrik <\m[blue]\fBsustrik@250bpm\&.com\fR\m[]\&\s-2\u[2]\d\s+2> and Martin Lucina <\m[blue]\fBmato@kotelna\&.sk\fR\m[]\&\s-2\u[3]\d\s+2>\&.
.SH "NOTES"
.IP " 1." 4
ph@imatix.com
.RS 4
\%mailto:ph@imatix.com
.RE
.IP " 2." 4
sustrik@250bpm.com
.RS 4
\%mailto:sustrik@250bpm.com
.RE
.IP " 3." 4
mato@kotelna.sk
.RS 4
\%mailto:mato@kotelna.sk
.RE
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