diff --git a/Signal/translations/en.lproj/Localizable.strings b/Signal/translations/en.lproj/Localizable.strings
index 253071590..c1c50bf36 100644
--- a/Signal/translations/en.lproj/Localizable.strings
+++ b/Signal/translations/en.lproj/Localizable.strings
@@ -2569,3 +2569,4 @@
 "Invalid public key" = "Invalid public key";
 "No search results" = "No search results";
 "Calculating proof of work" = "Calculating proof of work";
+"Failed to calculate proof of work." = "Failed to calculate proof of work.";
diff --git a/SignalServiceKit/src/Loki/ECKeyPair.m b/SignalServiceKit/src/Loki/ECKeyPair.m
index bbf77f769..2f42d4087 100644
--- a/SignalServiceKit/src/Loki/ECKeyPair.m
+++ b/SignalServiceKit/src/Loki/ECKeyPair.m
@@ -16,7 +16,7 @@ extern void curve25519_donna(unsigned char *output, const unsigned char *a, cons
     }
     static const uint8_t basepoint[ECCKeyLength] = { 9 };
     NSMutableData *publicKey = [NSMutableData dataWithLength:ECCKeyLength];
-    if (!publicKey) { OWSFail(@"Could not allocate buffer"); }
+    if (!publicKey) { OWSFail(@"Couldn't allocate buffer."); }
     curve25519_donna(publicKey.mutableBytes, privateKey.mutableBytes, basepoint);
     // Use KVC to access privateKey and publicKey even though they're private
     ECKeyPair *result = [ECKeyPair new];
diff --git a/SignalServiceKit/src/Loki/LokiMessage.swift b/SignalServiceKit/src/Loki/LokiMessage.swift
index 55060e832..e937802ef 100644
--- a/SignalServiceKit/src/Loki/LokiMessage.swift
+++ b/SignalServiceKit/src/Loki/LokiMessage.swift
@@ -1,6 +1,6 @@
 import PromiseKit
 
-@objc public final class LokiMessage : NSObject {
+public struct LokiMessage {
     /// The hex encoded public key of the receiver.
     let destination: String
     /// The content of the message.
@@ -12,7 +12,7 @@ import PromiseKit
     /// The base 64 encoded proof of work.
     let nonce: String
     
-    init(destination: String, data: LosslessStringConvertible, ttl: UInt64, timestamp: UInt64, nonce: String) {
+    public init(destination: String, data: LosslessStringConvertible, ttl: UInt64, timestamp: UInt64, nonce: String) {
         self.destination = destination
         self.data = data
         self.ttl = ttl
@@ -37,7 +37,7 @@ import PromiseKit
         }
     }
     
-    func toJSON() -> [String:String] {
+    public func toJSON() -> [String:String] {
         return [
             "destination" : destination,
             "data" : data.description,
diff --git a/SignalServiceKit/src/Loki/LokiMessagingAPI.swift b/SignalServiceKit/src/Loki/LokiMessagingAPI.swift
index 73567f642..668e31755 100644
--- a/SignalServiceKit/src/Loki/LokiMessagingAPI.swift
+++ b/SignalServiceKit/src/Loki/LokiMessagingAPI.swift
@@ -2,9 +2,9 @@ import PromiseKit
 
 @objc public final class LokiMessagingAPI : NSObject {
     
-    private static var baseURL: String { return textSecureServerURL }
-    private static var port: String { return "8080" }
-    private static var apiVersion: String { return "v1" }
+    private static let baseURL = "http://13.238.53.205"
+    private static let port = "8080"
+    private static let apiVersion = "v1"
     public static let defaultTTL: UInt64 = 4 * 24 * 60 * 60
     
     // MARK: Types
@@ -34,7 +34,7 @@ import PromiseKit
         let request = TSRequest(url: url, method: "POST", parameters: [ "method" : method.rawValue, "params" : parameters ])
         return TSNetworkManager.shared().makePromise(request: request)
     }
-
+    
     public static func sendSignalMessage(_ signalMessage: SignalMessage, to destination: String) -> Promise<RawResponse> {
         return LokiMessage.fromSignalMessage(signalMessage).then(sendMessage)
     }
@@ -50,4 +50,9 @@ import PromiseKit
         ]
         return invoke(.retrieveAllMessages, parameters: parameters)
     }
+    
+    // MARK: Obj-C API
+    @objc public static func sendSignalMessage(_ signalMessage: SignalMessage, to destination: String, completionHandler: @escaping (Any?, NSError?) -> Void) {
+        sendSignalMessage(signalMessage, to: destination).done { completionHandler($0.responseObject, nil) }.catch { completionHandler(nil, $0 as NSError) }
+    }
 }