diff --git a/ports/cef/lib.rs b/ports/cef/lib.rs
index ca96b5283e2..ae689e33ee1 100644
--- a/ports/cef/lib.rs
+++ b/ports/cef/lib.rs
@@ -52,6 +52,7 @@ pub mod request;
 pub mod string;
 pub mod string_list;
 pub mod string_map;
+pub mod string_multimap;
 pub mod task;
 pub mod types;
 pub mod urlrequest;
diff --git a/ports/cef/string_map.rs b/ports/cef/string_map.rs
index 2ca2e4e0f9c..91434c556f3 100644
--- a/ports/cef/string_map.rs
+++ b/ports/cef/string_map.rs
@@ -54,7 +54,7 @@ pub extern "C" fn cef_string_map_find(sm: *mut cef_string_map_t, key: *const cef
         if sm.is_null() { return 0; }
         let v = string_map_to_treemap(sm);
         slice_to_str((*key).str as *const u8, (*key).length as uint, |result| {
-            match (*v).find(&String::from_str(result)) {
+            match (*v).get(&String::from_str(result)) {
                 Some(s) => {
                     cef_string_utf8_set((**s).str as *const u8, (**s).length, value, 1);
                     1
diff --git a/ports/cef/string_multimap.rs b/ports/cef/string_multimap.rs
new file mode 100644
index 00000000000..b8edfa041a7
--- /dev/null
+++ b/ports/cef/string_multimap.rs
@@ -0,0 +1,150 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use eutil::slice_to_str;
+use libc::{c_int};
+use std::collections::TreeMap;
+use std::iter::AdditiveIterator;
+use std::mem;
+use std::string::String;
+use string::{cef_string_userfree_utf8_alloc,cef_string_userfree_utf8_free,cef_string_utf8_set};
+use types::{cef_string_multimap_t,cef_string_t};
+
+fn string_multimap_to_treemap(smm: *mut cef_string_multimap_t) -> *mut TreeMap<String, Vec<*mut cef_string_t>> {
+    smm as *mut TreeMap<String, Vec<*mut cef_string_t>>
+}
+
+//cef_string_multimap
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_alloc() -> *mut cef_string_multimap_t {
+    unsafe {
+         let smm: Box<TreeMap<String, Vec<*mut cef_string_t>>> = box TreeMap::new();
+         mem::transmute(smm)
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_size(smm: *mut cef_string_multimap_t) -> c_int {
+    unsafe {
+        if smm.is_null() { return 0; }
+        let v = string_multimap_to_treemap(smm);
+        (*v).values().map(|val| (*val).len()).sum() as c_int
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_find_count(smm: *mut cef_string_multimap_t, key: *const cef_string_t) -> c_int {
+    unsafe {
+        if smm.is_null() { return 0; }
+        let v = string_multimap_to_treemap(smm);
+        slice_to_str((*key).str as *const u8, (*key).length as uint, |result| {
+            match (*v).get(&String::from_str(result)) {
+                Some(s) =>  s.len() as c_int,
+                None => 0
+            }
+        })
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_append(smm: *mut cef_string_multimap_t, key: *const cef_string_t, value: *const cef_string_t) -> c_int {
+    unsafe {
+        if smm.is_null() { return 0; }
+        let v = string_multimap_to_treemap(smm);
+        slice_to_str((*key).str as *const u8, (*key).length as uint, |result| {
+            let s = String::from_str(result);
+            let csv = cef_string_userfree_utf8_alloc();
+            cef_string_utf8_set((*value).str as *const u8, (*value).length, csv, 1);
+            match (*v).get_mut(&s) {
+                Some(vc) => (*vc).push(csv),
+                None => { (*v).insert(s, vec!(csv)); }
+            }
+            1
+        })
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_enumerate(smm: *mut cef_string_multimap_t, key: *const cef_string_t, index: c_int, value: *mut cef_string_t) -> c_int {
+    unsafe {
+        if smm.is_null() { return 0; }
+        let v = string_multimap_to_treemap(smm);
+        slice_to_str((*key).str as *const u8, (*key).length as uint, |result| {
+            match (*v).get(&String::from_str(result)) {
+                Some(s) => {
+                    if (*s).len() <= index as uint {
+                        return 0;
+                    }
+                    let cs = (*s)[index as uint];
+                    cef_string_utf8_set((*cs).str as *const u8, (*cs).length, value, 1)
+                }
+                None => 0
+            }
+        })
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_key(smm: *mut cef_string_multimap_t, index: c_int, value: *mut cef_string_t) -> c_int {
+    unsafe {
+        if index < 0 || smm.is_null() { return 0; }
+        let v = string_multimap_to_treemap(smm);
+        let mut rem = index as uint;
+
+        for (key, val) in (*v).iter() {
+            if rem < (*val).len() {
+                return cef_string_utf8_set((*key).as_bytes().as_ptr(), (*key).len() as u64, value, 1);
+            } else {
+                rem -= (*val).len();
+            }
+        }
+    }
+    0
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_value(smm: *mut cef_string_multimap_t, index: c_int, value: *mut cef_string_t) -> c_int {
+    unsafe {
+        if index < 0 || smm.is_null() { return 0; }
+        let v = string_multimap_to_treemap(smm);
+        let mut rem = index as uint;
+
+        for val in (*v).values() {
+            if rem < (*val).len() {
+                let cs = (*val)[rem as uint];
+                return cef_string_utf8_set((*cs).str as *const u8, (*cs).length, value, 1);
+            } else {
+                rem -= (*val).len();
+            }
+        }
+    }
+    0
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_clear(smm: *mut cef_string_multimap_t) {
+    unsafe {
+        if smm.is_null() { return; }
+        let v = string_multimap_to_treemap(smm);
+        if (*v).len() == 0 { return; }
+        for (_, val) in (*v).iter_mut() {
+            while (*val).len() != 0 {
+                let cs = (*val).pop();
+                cef_string_userfree_utf8_free(cs.unwrap());
+            }
+        }
+        (*v).clear();
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn cef_string_multimap_free(smm: *mut cef_string_multimap_t) {
+    unsafe {
+        if smm.is_null() { return; }
+        let v: Box<TreeMap<String, Vec<*mut cef_string_t>>> = mem::transmute(smm);
+        cef_string_multimap_clear(smm);
+        drop(v);
+    }
+}
diff --git a/ports/cef/types.rs b/ports/cef/types.rs
index 4484ffe7787..b6abf2e7d38 100644
--- a/ports/cef/types.rs
+++ b/ports/cef/types.rs
@@ -6,6 +6,7 @@ use libc::{c_uint, c_ushort, c_int, c_double, size_t, c_void, c_longlong};
 use libc::types::os::arch::c95::wchar_t;
 
 pub enum cef_string_map_t {}
+pub enum cef_string_multimap_t {}
 pub enum cef_string_list_t {}
 pub enum cef_text_input_context_t {}
 pub enum cef_event_handle_t {}