Question

我有两个用C编写的程序。服务器尝试发送一个360000字节的uint8_t数组，客户端需要接收它。

我收到并发送了360000个字节，但由于某种原因，我没有按相同的顺序收到它们。这两台机器都是小端的。

服务器 （接收是带发送的功能）

#include <stdio.h>  /* for printf() and fprintf() */
#include <sys/socket.h>  /* for socket(), bind(), and connect() */
#include <arpa/inet.h>  /* for sockaddr_in and inet_ntoa() */
#include <stdlib.h>     /* for atoi() */
#include <string.h>     /* for memset*/
#include <unistd.h>     /* for close*/
#include "HandleTCPClient.c"



#define MAXPENDING 5 /* Maximum outstanding connection requests */

void DieWithError(char *errorMessage);  /* Error handling function */
void HandleTCPClient(int clntSocket);  /* TCP client handling function */

int main(int argc, char *argv[])
{
int servSock;                         /* Socket descriptor for server */
int clntSock;                         /* Socket descriptor for client */
struct sockaddr_in ServAddr;      /* Local address */
struct sockaddr_in ClntAddr;      /* Client address */
unsigned short ServPort;          /* Server port */
unsigned int clntLen;                 /* Length of client address data structure */


if (argc != 2)      /* Test for correct number of arguments */
{
    fprintf(stderr, "Usage: %s <Server Port>\n", argv[0]) ;
    exit(1);
}

ServPort = atoi(argv[1]);  /* First arg: local port */

/* Create socket for incoming connections */
if ((servSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
    DieWithError( "socket () failed") ;

/* Construct local address structure */
memset(&ServAddr, 0, sizeof(ServAddr));   // Zero out structure 
ServAddr.sin_family = AF_INET;                // Internet address family 
ServAddr.sin_addr.s_addr = htons(INADDR_ANY); // Any incoming interface 
ServAddr.sin_port = htons(ServPort);      // Local port 

/* Bind to the local address */
if (bind(servSock, (struct sockaddr *)&ServAddr, sizeof(ServAddr)) < 0)
    DieWithError ( "bind () failed");


// Mark the socket so it will listen for incoming connections 
if (listen(servSock, MAXPENDING) < 0)
    DieWithError("listen() failed") ;

int count = 0;
for (;;) // Run forever 
    {
        count++;
        /* Set the size of the in-out parameter */
        clntLen = sizeof(ClntAddr);

        /* Wait for a client to connect */
        if ((clntSock = accept(servSock, (struct sockaddr *) &ClntAddr, &clntLen)) < 0)
            DieWithError("accept() failed");

        /* clntSock is connected to a client! */
        printf ("%sConnection Number: %d                                                                     :-)%s \n" ,"\033[1m\033[42m" ,  count , "\033[0m");
        printf("Handling client %s\n", inet_ntoa(ClntAddr.sin_addr));
            getchar();
        HandleTCPClient (clntSock);
        printf ("Finished Handling client %s\n", inet_ntoa(ClntAddr.sin_addr));
    }
}

void DieWithError(char const *errorMessage)
{
    printf ("%s" , "\033[1m\033[31m" ); // Bold RED
    perror(errorMessage);
    printf ("%s" , "\033[0m" ); // Black
    exit(1);
}

SERVER - 调用处理TCP客户端（函数的主要部分）

array Data[6];
    int totalRecvMsgSize = 0, recvMsgSize = 0;
printf ("RCVBUFSIZE:%d\n" , RCVBUFSIZE);
//printf("%sInside the recv%s\n" , "\033[1m\033[46m" , "\033[0m");
while((totalRecvMsgSize <= (RCVBUFSIZE - 1) ))
// we need a loop since recv retrives only the data curntley available.
    {   
        //printf("%sInside the recv while loop%s\n" , "\033[1m\033[45m" , "\033[0m");
    // Receive message from client
    if ((recvMsgSize = recv(clntSocket, Buffer, RCVBUFSIZE - totalRecvMsgSize, 0)) < 0)
        DieWithError("recv() failed") ;
    else if (recvMsgSize == 0)
        {
            printf("(case is recvMsgSize == 0 ) ----> totalRecvMsgSize = %d\n", totalRecvMsgSize);
            break;
        }
    else // if recvMsgSize > 0
        totalRecvMsgSize += recvMsgSize;

    }
Data[DataCounter].elementNumber = RCVBUFSIZE_SOURCE;
Data[DataCounter].colus = 1024; //step
Data[DataCounter].rows = 357; // rows
Data[DataCounter].key = DataCounter;
shiftData (Data);

客户端发送功能

void TcpClient ( char *servIP , unsigned short echoServPort , array_t *arrayData)
{

int i = 0;
for (i = 0 ; i < 365568 ; i++)
    {
        Data->arrayData[i] = i;
        printf ("%d " ,Data->array[i]);
    }
printf("\n");
//***************************************************************************************************************

//*****************************Create a socket and Establish connection to server *******************************

int sock;                           //Socket descriptor 
struct sockaddr_in ServAddr;    //Echo server address            
int bytesRcvd, totalBytesRcvd;      //Bytes read in single recv()
                                    //and total bytes read      
// Create a reliable, stream socket using TCP 
if ((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
    DieWithError("socket () failed") ;

// Construct the server address structure 
memset(&ServAddr, 0, sizeof(ServAddr));  /* Zero out structure */
ServAddr.sin_family = AF_INET;               /* Internet address family */
ServAddr.sin_addr.s_addr = inet_addr(servIP);/* Server IP address */
ServAddr.sin_port = htons(echoServPort);    /* Server port */

// Establish the connection to the server 
if (connect(sock, (struct sockaddr *) &ServAddr, sizeof(ServAddr)) < 0)
    DieWithError("connect () failed") ;

printf ("I am in Send\n");
size_t sent_total = 0;
int sent_now = 0;
sent_now = send(sockId, buffer + sent_total, len - sent_total, 0);
    //printf("After sent(), sent now = %d\n" , sent_now);
    if (sent_now == -1)
        DieWithError("send() failed or connection closed prematurely");

printf ("send requested = %zu, sent = %zu\n", len, sent_total);


printf("\n"); // Print a final linefeed

我查看了手册页并在不同的论坛中找不到任何内容。 *我试图不放一切，因为它很长！

通过套接字发送大数组并接收错误的命令

0 个答案: