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https://issues.apache.org/jira/browse/TS-4574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15428746#comment-15428746
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James Peach commented on TS-4574:
---------------------------------
No, this is not fixed. The referenced pull request just mentions this ticket.
> Let TSHttpTxnServerAddrSet clear the address
> --------------------------------------------
>
> Key: TS-4574
> URL: https://issues.apache.org/jira/browse/TS-4574
> Project: Traffic Server
> Issue Type: Improvement
> Components: TS API
> Reporter: James Peach
> Assignee: James Peach
> Fix For: 7.0.0
>
>
> After using {{TSHttpTxnServerAddrSet}} to route requests to a specific
> destination, you might change your mind and decide to allow an internal DNS
> lookup.
> I propose that we allow {{TSHttpTxnServerAddrSet}} to take a {{NULL}}
> argument to clear and API DNS result that was previously set.
> {code}
> diff --git a/proxy/InkAPI.cc b/proxy/InkAPI.cc
> index 5772c12..362bf32 100644
> --- a/proxy/InkAPI.cc
> +++ b/proxy/InkAPI.cc
> @@ -5336,6 +5336,13 @@ TSHttpTxnServerAddrSet(TSHttpTxn txnp, struct sockaddr
> const *addr)
> sdk_assert(sdk_sanity_check_txn(txnp) == TS_SUCCESS);
> HttpSM *sm = reinterpret_cast<HttpSM *>(txnp);
> +
> + if (addr == NULL) {
> + sm->t_state.api_server_addr_set = false;
> + sm->t_state.server_info.dst_addr.setToAnyAddr(AF_INET);
> + return TS_SUCCESS;
> + }
> +
> if (ats_ip_copy(&sm->t_state.server_info.dst_addr.sa, addr)) {
> sm->t_state.api_server_addr_set = true;
> return TS_SUCCESS;
> {code}
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