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Problem: undocumented limit on IPC paths in Linux is 107 chars

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Solution: document the limit of 113 chars including ipc://. We might
fix this in libzmq by shortening an over-long IPC pathname into a
unique string; so long as this is done consistently in bind and in
connect, it will save applications from weird failures when they
use external data to generate IPC pathnames.
This commit is contained in:
Pieter Hintjens 2014-09-10 09:38:04 +02:00
parent f15146b5d2
commit 51c8c1d67a
1 changed files with 4 additions and 0 deletions
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doc/zmq_ipc.txt
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@ -53,6 +53,10 @@ namespace shall be used. The abstract namespace is independent of the
filesystem and if a process attempts to bind an endpoint already bound by a filesystem and if a process attempts to bind an endpoint already bound by a
process, it will fail. See unix(7) for details. process, it will fail. See unix(7) for details.
NOTE: IPC pathnames have a maximum size that depends on the operating system.
On Linux, the maximum is 113 characters including the "ipc://" prefix (107
characters for the real path name).
Connecting a socket Connecting a socket
~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~
When connecting a 'socket' to a peer address using _zmq_connect()_ with the When connecting a 'socket' to a peer address using _zmq_connect()_ with the