Function TSRemapDoRemap

example/plugins/c-api/remap/remap.cc:214–317

-------------------------- TSRemapDoRemap -------------------------------- */

/* -------------------------- TSRemapDoRemap -------------------------------- */
TSRemapStatus
TSRemapDoRemap(void *ih, TSHttpTxn rh, TSRemapRequestInfo *rri)
{
  const char *temp;
  const char *temp2;
  int         len, len2, port;
  TSMLoc      cfield;
  uint64_t    _processing_counter = processing_counter++;

  remap_entry *ri = static_cast<remap_entry *>(ih);
  Dbg(dbg_ctl, "enter");

  if (!ri || !rri) {
    return TSREMAP_NO_REMAP; /* TS must remap this request */
  }

  Dbg(dbg_ctl, "From: \"%s\"  To: \"%s\"\n", ri->argv[0], ri->argv[1]);

  temp = TSUrlHostGet(rri->requestBufp, rri->requestUrl, &len);
  Dbg(dbg_ctl, "Request Host(%d): \"%.*s\"\n", len, len, temp);

  temp = TSUrlHostGet(rri->requestBufp, rri->mapToUrl, &len);
  Dbg(dbg_ctl, "Remap To Host: \"%.*s\"\n", len, temp);

  temp = TSUrlHostGet(rri->requestBufp, rri->mapFromUrl, &len);
  Dbg(dbg_ctl, "Remap From Host: \"%.*s\"\n", len, temp);

  Dbg(dbg_ctl, "Request Port: %d\n", TSUrlPortGet(rri->requestBufp, rri->requestUrl));
  Dbg(dbg_ctl, "Remap From Port: %d\n", TSUrlPortGet(rri->requestBufp, rri->mapFromUrl));
  Dbg(dbg_ctl, "Remap To Port: %d\n", TSUrlPortGet(rri->requestBufp, rri->mapToUrl));

  temp = TSUrlPathGet(rri->requestBufp, rri->requestUrl, &len);
  Dbg(dbg_ctl, "Request Path: \"%.*s\"\n", len, temp);

  temp = TSUrlPathGet(rri->requestBufp, rri->mapFromUrl, &len);
  Dbg(dbg_ctl, "Remap From Path: \"%.*s\"\n", len, temp);

  temp = TSUrlPathGet(rri->requestBufp, rri->mapToUrl, &len);
  Dbg(dbg_ctl, "Remap To Path: \"%.*s\"\n", len, temp);

  // InkAPI usage case
  const char *value;

  if ((cfield = TSMimeHdrFieldFind(rri->requestBufp, rri->requestHdrp, TS_MIME_FIELD_DATE, -1)) != TS_NULL_MLOC) {
    Dbg(dbg_ctl, "We have \"Date\" header in request\n");
    value = TSMimeHdrFieldValueStringGet(rri->requestBufp, rri->requestHdrp, cfield, -1, nullptr);
    Dbg(dbg_ctl, "Header value: %s\n", value);
  }
  if ((cfield = TSMimeHdrFieldFind(rri->requestBufp, rri->requestHdrp, "MyHeader", sizeof("MyHeader") - 1)) != TS_NULL_MLOC) {
    Dbg(dbg_ctl, "We have \"MyHeader\" header in request\n");
    value = TSMimeHdrFieldValueStringGet(rri->requestBufp, rri->requestHdrp, cfield, -1, nullptr);
    Dbg(dbg_ctl, "Header value: %s\n", value);
  }

  // How to store plugin private arguments inside Traffic Server request processing block.
  if (TSUserArgIndexReserve(TS_USER_ARGS_TXN, "remap_example", "Example remap plugin", &arg_index) == TS_SUCCESS) {
    Dbg(dbg_ctl, "Save processing counter %" PRIu64 " inside request processing block\n", _processing_counter);
    TSUserArgSet(rh, arg_index, (void *)_processing_counter); // save counter