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ASF GitHub Bot commented on THRIFT-3848: ---------------------------------------- Github user jeking3 commented on the issue: https://github.com/apache/thrift/pull/1040 Rebased on master to fix the TServerIntegrationTest hang. > As an implementer of a perl socket server, I do not want to have to remember > to ignore SIGCHLD for it to work properly > ---------------------------------------------------------------------------------------------------------------------- > > Key: THRIFT-3848 > URL: https://issues.apache.org/jira/browse/THRIFT-3848 > Project: Thrift > Issue Type: Bug > Components: Perl - Library > Affects Versions: 0.8, 0.9, 0.9.1, 0.9.2, 0.9.3 > Environment: Ubuntu 14.04, perl forking server, C++ client > Reporter: James E. King, III > Assignee: James E. King, III > > In a project I work on, we use a perl thrift server as a mock to simulate > something in production. A C++ client connects, makes a call, and > disconnects. The perl server is a forking server. > I found that if I do not explicity ignore SIGCHLD, I can accept one > connection and process it, but when it disconnects, the subsequent accept > call is interrupted by a SIGCHLD and results in a useless handle that > can_read says cannot be read. This puts Server.pm into an infinite > accept/read/fail loop. The serve() method of the ForkingServer needs to > explicitly ignore SIGCHLD to work properly. > I've observed this behavior as far back as thrift-0.8.0 up through 0.9.3. > The workaround is to add the following code before calling serve(): > {code}$SIG{CHLD} = 'IGNORE';{code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)