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Alan Conway commented on PROTON-992: ------------------------------------ Yep, was looking at an older version of the code. My bad, re-reading. > Proton's use of Cyrus SASL is not thread-safe. > ---------------------------------------------- > > Key: PROTON-992 > URL: https://issues.apache.org/jira/browse/PROTON-992 > Project: Qpid Proton > Issue Type: Bug > Components: proton-c > Affects Versions: 0.10 > Reporter: michael goulish > Assignee: michael goulish > Priority: Critical > > Documentation for the Cyrus SASL library says that the library is believed to > be thread-safe only if the code that uses it meets several requirements. > The requirements are: > * you supply mutex functions (see sasl_set_mutex()) > * you make no libsasl calls until sasl_client/server_init() completes > * no libsasl calls are made after sasl_done() is begun > * when using GSSAPI, you use a thread-safe GSS / Kerberos 5 library. > It says explicitly that that sasl_set* calls are not thread safe, since they > set global state. > The proton library makes calls to sasl_set* functions in : > pni_init_client() > pni_init_server(), and > pni_process_init() > Since those are internal functions, there is no way for code that uses Proton > to lock around those calls. > I think proton needs a new API call to let applications call > sasl_set_mutex(). Or something. > We probably also need other protections to meet the other requirements > specified in the Cyrus documentation (and quoted above). -- This message was sent by Atlassian JIRA (v6.3.4#6332)