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https://issues.apache.org/jira/browse/TS-2953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14072956#comment-14072956
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portl4t commented on TS-2953:
-----------------------------
TSHttpTxnEffectiveUrlStringGet(...) is a function which can be used to get the
whole url, you can see this function in proxy/InkAPI.cc, and there may be
other plugins which had used this function.
> GET Host header in reverse proxy setup
> --------------------------------------
>
> Key: TS-2953
> URL: https://issues.apache.org/jira/browse/TS-2953
> Project: Traffic Server
> Issue Type: Bug
> Components: Core, CPP API, Logging
> Affects Versions: 4.2.1
> Reporter: Vasile Bogdan Raica
> Labels: API
>
> Hello, been trying this for 3 days, I think this is a bug. See bellow code,
> this has been tested on TS_HTTP_PRE_REMAP_HOOK and
> TS_HTTP_READ_REQUEST_HDR_HOOK. Also the example for blacklist, which uses the
> same thing, also fails.
> Same goes with getting the URL string, it will remove the hostname and leave
> the requested part, eg.
> http:///somefile.php
> (there are 3 slashes there).
> I've been using ATS for about 3 days (yes short time) and trying to make a
> plugin for it and I can't seem to get what I want ... I may be missing
> something, and if so, I apologize for taking your time to read this and if
> possible, kindly show me the right way to do this if possible.
> static void
> handle_request(TSHttpTxn txnp, TSCont contp) {
> TSMBuffer bufp; // TSMBuffer
> TSMLoc hdr_loc; // TSMLoc offset
> TSMLoc url_loc; // TSMLoc locp
> const char *host;
> int host_length;
> // getting client request
> errorCode = TSHttpTxnClientReqGet (txnp, &bufp, &hdr_loc);
> if (errorCode != TS_SUCCESS) {
> TSError ("couldn't retrieve client request header\n");
> goto done;
> } else {
> TSTextLogObjectWrite(logFile, "Reading client request...");
> }
> // getting client requested url
> errorCode = TSHttpHdrUrlGet (bufp, hdr_loc, &url_loc);
> if (errorCode != TS_SUCCESS) {
> TSError ("couldn't retrieve request url\n");
> TSHandleMLocRelease (bufp, TS_NULL_MLOC, hdr_loc);
> goto done;
> } else {
> TSTextLogObjectWrite(logFile, "Reading url_loc request...");
> }
> // getting host
> host = TSUrlHostGet (bufp, url_loc, &host_length);
> TSTextLogObjectWrite(logFile, "Getting host header... %s", host);
> if (!host) {
> TSError ("couldn't retrieve request host header \n");
> TSHandleMLocRelease (bufp, hdr_loc, url_loc);
> TSHandleMLocRelease (bufp, TS_NULL_MLOC, hdr_loc);
> goto done;
> } else {
> TSTextLogObjectWrite(logFile, "Getting host header... %s", host);
> }
> done:
> TSTextLogObjectWrite(logFile, "Allowing http event to continue ...");
> TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE);
> }
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