Swfit调用C实现socket白屏？

如题，本来成功了的，不知道改错了哪里就一直白屏了。。。大家帮忙看看
分三个文件

Scene.swift

tcp_IPv4_Client.swift

tcp_IPv4_Client.c

// Scene.swift // ... // ... func Socket()->Bool{ let Socket:tcp_IPv4_Client = tcp_IPv4_Client(addr: "192.168.0.106", port: 45892) if (Socket.connect(timeout: 5) == false){ return false } if (Socket.send(str:"_2345678_") == false){ return false } if let Received = Socket.read(10){ if let Message_Received = String(bytes: Received, encoding: String.Encoding.utf8){ print ("-------------------------------------------------") print (Message_Received) print ("-------------------------------------------------") } }else { return false } _ = Socket.close() return true } // ... // ...

// tcp_IPv4_Client.swift import Foundation @_silgen_name("tcp_IPv4_connect") func c_tcp_IPv4_connect(_ IP:UnsafePointer<Int8>,port:Int32,timeout:Int32)->Int32 @_silgen_name("tcp_IPv4_close") func c_tcp_IPv4_close(_ Given_Socket:Int32) @_silgen_name("tcp_IPv4_send")func c_tcp_IPv4_send(_ Given_Socket:Int32, buff:UnsafePointer<UInt8>, len:Int32)->Int32 @_silgen_name("tcp_IPv4_receive") func c_tcp_IPv4_receive(_ Given_Socket:Int32, buff:UnsafePointer<UInt8>, len:Int32,timeout:Int32) -> Int32 open class tcp_IPv4_Client:tcp_IPv4_Client_Master{ open func connect(timeout t:Int)->Bool{ self.Given_Socket = c_tcp_IPv4_connect(self.addr, port: Int32(self.port), timeout: Int32(t)) if (self.Given_Socket == -1){ return false } return true }open func close(){ c_tcp_IPv4_close(self.Given_Socket!) } open func send(str s:String)->Bool{ if (c_tcp_IPv4_send(self.Given_Socket!, buff: s, len: Int32(strlen(s))) == -1){ return false } return true }open func read(_ expectlen:Int, timeout:Int = -1)->[UInt8]?{ var buff:[UInt8]= [UInt8](repeating: 0x0, count: expectlen) let Receiver:Int32= c_tcp_IPv4_receive(self.Given_Socket!, buff: &buff, len: Int32(expectlen), timeout: Int32(timeout)) if (Receiver == -1){ return nil } let rs=buff[0...Int(Receiver-1)] let data:[UInt8] = Array(rs) return data } }open class tcp_IPv4_Client_Master{ var addr:String var port:Int var Given_Socket:Int32? init(){ self.addr = "" self.port = 0 } public init(addr a:String,port p:Int){ self.addr = a self.port = p } }

// tcp_IPv4_Client.c #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <arpa/inet.h> #include <netinet/in.h> #incl优艾设计网_设计LOGOude <dirent.h> #include <netdb.h> #include <unistd.h> #include <fcntl.h> #include <signal.h>#include <sys/select.h> #include <sys/socket.h> #include <sys/stat.h> #include <sys/types.h> int tcp_IPv4_connect(char *IP, int PORT, int Timeout){ int Socket = socket(AF_INET, SOCK_STREAM, 0); if (Socket == -1){ return -1; }struct timeval TIMEOUT; TIMEOUT.tv_sec= Timeout; TIMEOUT.tv_usec = 0; if (setsockopt(Socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&TIMEOUT, sizeof(TIMEOUT)) == -1){ close(Socket); return -1; } if (setsockopt(Socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&TIMEOUT, sizeof(TIMEOUT)) == -1){ close(Socket); return -1; }struct sockaddr_in Socket_Info; Socket_Info.sin_family= AF_INET; Socket_Info.sin_addr.s_addr = inet_addr(IP); Socket_Info.sin_port= htons(PORT);if (connect(Socket, (struct sockaddr *)&Socket_Info, sizeof(Socket_Info)) == -1){ close(Socket); return -1; } return Socket; }int tcp_IPv4_close(int Socket){ close(Socket); return 0; }int tcp_IPv4_receive(int Socket, char *Message, int Message_Length){ int Receiver = (int)read(Socket, Message, Message_Length); if (Receiver == -1){ close(Socket); return -1; } return Receiver; }int tcp_IPv4_send(int Socket, char *Message,int Message_Length){ int Sender = (int)write(Socket, Message, Message_Length); if (Sender == -1) { close(Socket); return -1; } return Sender; }