Merge branch 'nybek/fix_so_linger_zero__simple'

* nybek/fix_so_linger_zero__simple:
  Update prim_inet.beam
  Fix socket option {linger, {true, 0}} to abort TCP connections
  Apply 'show_econnreset' socket option to send errors as well
  Add 'show_econnreset' TCP socket option

1 files changed, 30 insertions, 0 deletions

diff --git a/lib/kernel/doc/src/inet.xml b/lib/kernel/doc/src/inet.xml
index 77a8caaaf6..4dd9e0e221 100644
--- a/lib/kernel/doc/src/inet.xml
+++ b/lib/kernel/doc/src/inet.xml
@@ -1037,6 +1037,36 @@ setcap cap_sys_admin,cap_sys_ptrace,cap_dac_read_search+epi beam.smp
 			<marker id="option-sndbuf"></marker>
           </item>
 
+          <tag><c>{show_econnreset, Boolean}</c>(TCP/IP sockets)</tag>
+          <item>
+            <p>When this option is set to <c>false</c>, as it is by
+              default, an RST that is received from the TCP peer is treated
+              as a normal close (as though a FIN was sent). A caller
+              to <seealso marker="gen_tcp#recv/2">gen_tcp:recv/2</seealso>
+              will get <c>{error, closed}</c>. In active
+              mode the controlling process will receive a
+              <c>{tcp_close, Socket}</c> message, indicating that the
+              peer has closed the connection.</p>
+            <p>Setting this option to <c>true</c> will allow you to
+              distinguish between a connection that was closed normally,
+              and one which was aborted (intentionally or unintentionally)
+              by the TCP peer. A call to
+              <seealso marker="gen_tcp#recv/2">gen_tcp:recv/2</seealso>
+              will return <c>{error, econnreset}</c>. In
+              active mode, the controlling process will receive a
+              <c>{tcp_error, Socket, econnreset}</c> message
+              before the usual <c>{tcp_closed, Socket}</c>, as is
+              the case for any other socket error. Calls to
+              <seealso marker="gen_tcp#send/2">gen_tcp:send/2</seealso>
+              will also return <c>{error, econnreset}</c> when it
+              is detected that a TCP peer has sent an RST.</p>
+            <p>A connected socket returned from
+              <seealso marker="gen_tcp#accept/1">gen_tcp:accept/1</seealso>
+              will inherit the <c>show_econnreset</c> setting from the
+              listening socket.</p>
+			<marker id="option-show_econnreset"></marker>
+          </item>
+
           <tag><c>{sndbuf, Size}</c></tag>
           <item>
             <p>The minimum size of the send buffer to use for the socket.