Function http_hdr_print

src/proxy/hdrs/HTTP.cc:431–569

  -------------------------------------------------------------------------*/

int
http_hdr_print(HTTPHdrImpl const *hdr, char *buf, int bufsize, int *bufindex, int *dumpoffset)
{
#define TRY(x) \
  if (!x)      \
  return 0

  int   tmplen, hdrstat;
  char  tmpbuf[32];
  char *p;

  ink_assert((hdr->m_polarity == HTTP_TYPE_REQUEST) || (hdr->m_polarity == HTTP_TYPE_RESPONSE));

  if (hdr->m_polarity == HTTP_TYPE_REQUEST) {
    if (hdr->u.req.m_ptr_method == nullptr) {
      return 1;
    }

    if ((buf != nullptr) && (*dumpoffset == 0) && (bufsize - *bufindex >= hdr->u.req.m_len_method + 1)) { // fastpath

      p = buf + *bufindex;
      memcpy(p, hdr->u.req.m_ptr_method, hdr->u.req.m_len_method);
      p         += hdr->u.req.m_len_method;
      *p++       = ' ';
      *bufindex += hdr->u.req.m_len_method + 1;

      if (hdr->u.req.m_url_impl) {
        TRY(url_print(hdr->u.req.m_url_impl, buf, bufsize, bufindex, dumpoffset));
        if (bufsize - *bufindex >= 1) {
          if (hdr->u.req.m_method_wks_idx == HTTP_WKSIDX_CONNECT) {
            *bufindex -= 1; // remove trailing slash for CONNECT request
          }
          p          = buf + *bufindex;
          *p++       = ' ';
          *bufindex += 1;
        } else {
          return 0;
        }
      }

      if (bufsize - *bufindex >= 9) {
        http_hdr_version_to_string(hdr->m_version, p);
        *bufindex += 9 - 1; // overwrite '\0';
      } else {
        TRY(http_version_print(hdr->m_version, buf, bufsize, bufindex, dumpoffset));
      }

      if (bufsize - *bufindex >= 2) {
        p          = buf + *bufindex;
        *p++       = '\r';
        *p++       = '\n';
        *bufindex += 2;
      } else {
        TRY(mime_mem_print("\r\n", 2, buf, bufsize, bufindex, dumpoffset));
      }

      TRY(mime_hdr_print(hdr->m_fields_impl, buf, bufsize, bufindex, dumpoffset));