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head/share/man/man4/tcp.4
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| .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
| .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
| .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
| .\" SUCH DAMAGE. | .\" SUCH DAMAGE. | ||||
| .\" | .\" | ||||
| .\" From: @(#)tcp.4 8.1 (Berkeley) 6/5/93 | .\" From: @(#)tcp.4 8.1 (Berkeley) 6/5/93 | ||||
| .\" $FreeBSD$ | .\" $FreeBSD$ | ||||
| .\" | .\" | ||||
| .Dd March 23, 2019 | .Dd July 23, 2019 | ||||
| .Dt TCP 4 | .Dt TCP 4 | ||||
| .Os | .Os | ||||
| .Sh NAME | .Sh NAME | ||||
| .Nm tcp | .Nm tcp | ||||
| .Nd Internet Transmission Control Protocol | .Nd Internet Transmission Control Protocol | ||||
| .Sh SYNOPSIS | .Sh SYNOPSIS | ||||
| .In sys/types.h | .In sys/types.h | ||||
| .In sys/socket.h | .In sys/socket.h | ||||
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| .Va functions_default . | .Va functions_default . | ||||
| Default is true. | Default is true. | ||||
| .It Va insecure_rst | .It Va insecure_rst | ||||
| Use criteria defined in RFC793 instead of RFC5961 for accepting RST segments. | Use criteria defined in RFC793 instead of RFC5961 for accepting RST segments. | ||||
| Default is false. | Default is false. | ||||
| .It Va insecure_syn | .It Va insecure_syn | ||||
| Use criteria defined in RFC793 instead of RFC5961 for accepting SYN segments. | Use criteria defined in RFC793 instead of RFC5961 for accepting SYN segments. | ||||
| Default is false. | Default is false. | ||||
| .It Va ts_offset_per_conn | |||||
| When initializing the TCP timestamps, use a per connection offset instead of a | |||||
| per host pair offset. | |||||
| Default is to use per connection offsets as recommended in RFC 7323. | |||||
| .El | .El | ||||
| .Sh ERRORS | .Sh ERRORS | ||||
| A socket operation may fail with one of the following errors returned: | A socket operation may fail with one of the following errors returned: | ||||
| .Bl -tag -width Er | .Bl -tag -width Er | ||||
| .It Bq Er EISCONN | .It Bq Er EISCONN | ||||
| when trying to establish a connection on a socket which | when trying to establish a connection on a socket which | ||||
| already has one; | already has one; | ||||
| .It Bo Er ENOBUFS Bc or Bo Er ENOMEM Bc | .It Bo Er ENOBUFS Bc or Bo Er ENOMEM Bc | ||||
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