PR_GetLayersIdentity
syntax #include <prio.h> prdescidentity pr_getlayersidentity(prfiledesc* fd); parameter the function has the following parameter: fd a pointer to a file descriptor.

I/O Functions
for example, the following lines of code are equivalent: rv = pr_pushiolayer(stack, pr_top_io_layer, my_layer); rv = pr_pushiolayer(stack, pr_getlayersidentity(stack), my_layer); pr_getuniqueidentity pr_getnameforidentity pr_getlayersidentity pr_getidentitieslayer pr_getdefaultiomethods pr_createiolayerstub pr_pushiolayer pr_popiolayer ...

NSPR functions
pr_getuniqueidentity pr_createiolayerstub pr_getdefaultiomethods pr_getidentitieslayer pr_getlayersidentity pr_pushiolayer pr_popiolayer wrapping a native file descriptor if your current tcp socket code uses the standard bsd socket api, a lighter-weight method than creating your own nspr i/o layer is to simply import a native file descriptor into nspr.