TCP socket information structure.
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Data Fields |
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TCPSOCKET * | so_next |
| | Link to next tcp socket structure.
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void * | so_device |
| | Always zero.
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u_char | so_devtype |
| | Device type, always IFTYP_TCPSOCK.
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int(* | so_devread )(TCPSOCKET *, void *, int) |
| | Read from device.
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int(* | so_devwrite )(TCPSOCKET *, CONST void *, int) |
| | Write to device.
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int(* | so_devwrite_P )(TCPSOCKET *, PGM_P, int) |
| | Write to device.
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int(* | so_devioctl )(TCPSOCKET *, int, void *) |
| | Driver control function.
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u_short | so_devocnt |
| | Number of data bytes in output buffer.
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u_char * | so_devobuf |
| | Pointer to output buffer.
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u_short | so_devobsz |
| | Output buffer size.
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volatile u_char | so_state |
| | Connection state, see tcp_fsm.h.
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u_long | so_local_addr |
| | Local IP address in net byte order.
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u_short | so_local_port |
| | Local port number in net byte order.
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u_long | so_remote_addr |
| | Remote IP address in net byte order.
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u_short | so_remote_port |
| | Remote port number in net byte order.
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u_char | so_tx_flags |
| | Flags used during transmissions - see below.
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u_long | so_tx_isn |
| | Initial sequence number.
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u_long | so_tx_una |
| | Unacknowledged sequence number.
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u_long | so_tx_nxt |
| | Next sequence number to send.
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u_long | so_tx_wl1 |
| | Sequence number of last window update.
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u_long | so_tx_wl2 |
| | Acknowledged sequence of last window update.
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u_short | so_tx_win |
| | Peer's receive window.
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u_char | so_tx_dup |
| | Duplicate ACK counter.
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NETBUF * | so_tx_nbq |
| | Network buffers waiting to be acknowledged.
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HANDLE | so_tx_tq |
| | Threads waiting for transmit buffer space.
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u_long | so_rx_isn |
| | Initial sequence number of remote.
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u_long | so_rx_nxt |
| | Next sequence number to receive.
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u_short | so_rx_win |
| | Local receive window.
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u_short | so_rx_cnt |
| | Number of data bytes in the receive buffer.
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u_short | so_rx_bsz |
| | Receive buffer size.
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u_short | so_rd_cnt |
| | Number of bytes read from buffer top.
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NETBUF * | so_rx_buf |
| | Data waiting to be read by application.
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HANDLE | so_rx_tq |
| | Threads waiting for received data.
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NETBUF * | so_rx_nbq |
| | Network buffers received in advance.
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u_short | so_mss |
| | MSS, limited by remote option or MTU.
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u_long | so_rtt_seq |
| | Sequence number for RTT calculation.
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u_short | so_rtto |
| | Current retransmission timeout.
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u_short | so_retransmits |
| | Number of retransmits.
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u_short | so_time_wait |
| | Time wait counter.
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u_short | so_retran_time |
| | Retransmit time counter.
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u_short | so_last_error |
| | Last error code.
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HANDLE | so_pc_tq |
| | Listening thread.
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HANDLE | so_ac_tq |
| | Connecting thread.
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u_long | so_read_to |
| | Read timeout.
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u_long | so_write_to |
| | Write timeout.
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u_long | so_oos_drop |
| | Out of sequence dropped.
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