| // SPDX-License-Identifier: GPL-2.0 |
| // Test TCP_INQ and TCP_CM_INQ on the client side. |
| `./defaults.sh |
| ` |
| |
| // Create a socket and set it to non-blocking. |
| 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 |
| +0 fcntl(3, F_GETFL) = 0x2 (flags O_RDWR) |
| +0 fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0 |
| |
| // Connect to the server and enable TCP_INQ. |
| +0 connect(3, ..., ...) = -1 EINPROGRESS (Operation now in progress) |
| +0 setsockopt(3, SOL_TCP, TCP_INQ, [1], 4) = 0 |
| |
| +0 > S 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8> |
| +.01 < S. 0:0(0) ack 1 win 5792 <mss 1460,sackOK,TS val 700 ecr 100,nop,wscale 7> |
| +0 > . 1:1(0) ack 1 <nop,nop,TS val 200 ecr 700> |
| |
| // Now we have 10K of data ready on the socket. |
| +0 < . 1:10001(10000) ack 1 win 514 |
| +0 > . 1:1(0) ack 10001 <nop,nop,TS val 200 ecr 700> |
| |
| // We read 1K and we should have 9K ready to read. |
| +0 recvmsg(3, {msg_name(...)=..., |
| msg_iov(1)=[{..., 1000}], |
| msg_flags=0, |
| msg_control=[{cmsg_level=SOL_TCP, |
| cmsg_type=TCP_CM_INQ, |
| cmsg_data=9000}]}, 0) = 1000 |
| // We read 9K and we should have no further data ready to read. |
| +0 recvmsg(3, {msg_name(...)=..., |
| msg_iov(1)=[{..., 9000}], |
| msg_flags=0, |
| msg_control=[{cmsg_level=SOL_TCP, |
| cmsg_type=TCP_CM_INQ, |
| cmsg_data=0}]}, 0) = 9000 |
| |
| // Server sends more data and closes the connections. |
| +0 < F. 10001:20001(10000) ack 1 win 514 |
| +0 > . 1:1(0) ack 20002 <nop,nop,TS val 200 ecr 700> |
| |
| // We read 10K and we should have one "fake" byte because the connection is |
| // closed. |
| +0 recvmsg(3, {msg_name(...)=..., |
| msg_iov(1)=[{..., 10000}], |
| msg_flags=0, |
| msg_control=[{cmsg_level=SOL_TCP, |
| cmsg_type=TCP_CM_INQ, |
| cmsg_data=1}]}, 0) = 10000 |
| // Now, receive EOF. |
| +0 read(3, ..., 2000) = 0 |
