Bubbled up reusePort to the API as an option on createSocket

UdpSocket.js

@@ -43,6 +43,7 @@ function UdpSocket(options, onmessage) {
   }
 
   this.type = options.type
+  this.reusePort = options && options.reusePort
   this._ipv = Number(this.type.slice(3))
   this._ipRegex = ipRegex['v' + this._ipv]({ exact: true })
   this._id = instances++
@@ -89,7 +90,7 @@ UdpSocket.prototype.bind = function(port, address, callback) {
 
   this._state = STATE.BINDING
   this._debug('binding, address:', address, 'port:', port)
-  Sockets.bind(this._id, port, address, function(err, addr) {
+  Sockets.bind(this._id, port, address, {reusePort: this.reusePort }, function(err, addr) {
     err = normalizeError(err)
     if (err) {
       // questionable: may want to self-destruct and

ios/UdpSocketClient.h

@@ -61,9 +61,10 @@ typedef enum RCTUDPError RCTUDPError;
  *
  * @param port
  * @param host ip address
+ * @param options (such as 'reusePort')
  * @return true if bound, false if there was an error
  */
-- (BOOL)bind:(u_int16_t) port address:(NSString*) address error:(NSError**)error;
+- (BOOL)bind:(u_int16_t) port address:(NSString*)address options:(NSDictionary *)options error:(NSError**)error;
 
 /**
  * Join multicast groupt

ios/UdpSocketClient.m

@@ -78,7 +78,7 @@ NSString *const RCTUDPErrorDomain = @"RCTUDPErrorDomain";
   }
 }
 
-- (BOOL) bind:(u_int16_t)port address:(NSString *)address error:(NSError **) error
+- (BOOL)bind:(u_int16_t)port address:(NSString *)address options:(NSDictionary *)options error:(NSError **) error
 {
 
   if (_port) {
@@ -96,7 +96,9 @@ NSString *const RCTUDPErrorDomain = @"RCTUDPErrorDomain";
   
   [_udpSocket setMaxReceiveIPv4BufferSize:UINT16_MAX];
   [_udpSocket setMaxReceiveIPv6BufferSize:UINT16_MAX];
-  [_udpSocket enableReusePort:true error:error];
+
+  BOOL reusePort = options[@"reusePort"] ?: NO;
+  [_udpSocket enableReusePort:reusePort error:error];
   
   BOOL result;
   if (address) {

ios/UdpSockets.m

@@ -53,13 +53,14 @@ RCT_EXPORT_METHOD(createSocket:(nonnull NSNumber*)cId withOptions:(NSDictionary*
 RCT_EXPORT_METHOD(bind:(nonnull NSNumber*)cId
                   port:(int)port
                   address:(NSString *)address
+                  options:(NSDictionary *)options
                   callback:(RCTResponseSenderBlock)callback)
 {
     UdpSocketClient* client = [self findClient:cId callback:callback];
     if (!client) return;
 
     NSError *error = nil;
-    if (![client bind:port address:address error:&error])
+    if (![client bind:port address:address options:options error:&error])
     {
         NSString *msg = error.localizedFailureReason ?: error.localizedDescription;
         callback(@[msg ?: @"unknown error when binding"]);