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linger time = 0 -> unconditional hard disconnect #35

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linger time = 0 -> unconditional hard disconnect #35

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10 changes: 5 additions & 5 deletions src/api/api_msg.c
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Original file line number Diff line number Diff line change
Expand Up @@ -981,14 +981,14 @@ lwip_netconn_do_close_internal(struct netconn *conn WRITE_DELAYED_PARAM)
#if LWIP_SO_LINGER
/* check linger possibilities before calling tcp_close */
err = ERR_OK;
/* linger enabled/required at all? (i.e. is there untransmitted data left?) */
if ((conn->linger >= 0) && (conn->pcb.tcp->unsent || conn->pcb.tcp->unacked)) {
/* linger enabled? */
if (conn->linger >= 0) {
if ((conn->linger == 0)) {
/* data left but linger prevents waiting */
/* 0-timeout linger prevents waiting */
tcp_abort(tpcb);
tpcb = NULL;
} else if (conn->linger > 0) {
/* data left and linger says we should wait */
} else if (conn->pcb.tcp->unsent || conn->pcb.tcp->unacked) {
/* data left and nonzero linger says we should wait */
if (netconn_is_nonblocking(conn)) {
/* data left on a nonblocking netconn -> cannot linger */
err = ERR_WOULDBLOCK;
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