diff --git a/include/lnm/common.h b/include/lnm/common.h
index 8cc982e..95511cc 100644
--- a/include/lnm/common.h
+++ b/include/lnm/common.h
@@ -86,4 +86,17 @@ uint64_t lnm_atoi(const char *s, size_t len);
  */
 uint64_t lnm_digits(uint64_t num);
 
+/**
+ * Find the first case-insensitive occurence of s2 in s1.
+ *
+ * @param out pointer to store start of match in
+ * @param s1 pointer to string to look in
+ * @param s1_len length of s1
+ * @param s2 string to search for in s1
+ * @param s2_len length of s2
+ * @return true if found, false otherwise
+ */
+bool lnm_stristr(const char **out, const char *s1, size_t s1_len,
+                 const char *s2, size_t s2_len);
+
 #endif
diff --git a/src/http/lnm_http_req.c b/src/http/lnm_http_req.c
index cc453b2..3d12fcb 100644
--- a/src/http/lnm_http_req.c
+++ b/src/http/lnm_http_req.c
@@ -113,3 +113,15 @@ lnm_err lnm_http_req_header_get_s(lnm_http_req_hdr *out, lnm_http_req *req,
 
   return lnm_err_not_found;
 }
+
+lnm_err lnm_http_req_header_param(lnm_http_req_hdr_param *param,
+                                  const lnm_http_req_hdr *header,
+                                  const char *key) {
+  size_t key_len = strlen(key);
+
+  const char *s;
+  if (lnm_stristr(&s, header->name.s, header->name.len - 1, key, key_len) && (header->name.s[key_len] == '=')) {
+    // Value runs till end of header or next semi-colon
+
+  }
+}
diff --git a/src/lnm_utils.c b/src/lnm_utils.c
index 85094bd..b2c98ed 100644
--- a/src/lnm_utils.c
+++ b/src/lnm_utils.c
@@ -55,3 +55,19 @@ uint64_t lnm_digits(uint64_t num) {
 
   return digits;
 }
+
+bool lnm_stristr(const char **out, const char *s1, size_t s1_len,
+                 const char *s2, size_t s2_len) {
+  while (s1_len >= s2_len) {
+    if (lnm_strnieq(s1, s1_len, s2, s2_len)) {
+      *out = s1;
+
+      return true;
+    }
+
+    s1_len--;
+    s1++;
+  }
+
+  return false;
+}