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我正在C中進行TCP客戶端/服務器通信。客戶端必須獲取數據數量（不是> 6），獲取數據並將它們發送到服務器單字符串消息是這樣的：4 11 21 9 11.
4是數據的數量和11,21,9,11是數據。用多個號碼發送唯一字符串客戶端/服務器TCP
然後，服務器必須讀取消息，打印並向客戶端發送收到的數據的數量（4）。
我想這對於客戶端：
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
int main(int argc, char *argv[]) {
int simpleSocket = 0;
int simplePort = 0;
int returnStatus= 0;
char buffsend[256];
char buffrecv[256];
int n, i;
struct sockaddr_in simpleServer;
if (3 != argc) {
fprintf(stderr, "Usage: %s <server> <port>\n", argv[0]);
exit(1);
}
/* create a streaming socket */
simpleSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (simpleSocket == -1) {
fprintf(stderr, "Could not create a socket!\n");
exit(1);
}
else {
fprintf(stderr, "Socket created!\n");
}
/* retrieve the port number for connecting */
simplePort = atoi(argv[2]);
/* setup the address structure */
/* use the IP address sent as an argument for the server address */
//bzero(&simpleServer, sizeof(simpleServer));
memset(&simpleServer, '\0', sizeof(simpleServer));
simpleServer.sin_family = AF_INET;
//inet_addr(argv[2], &simpleServer.sin_addr.s_addr);
simpleServer.sin_addr.s_addr=inet_addr(argv[1]);
simpleServer.sin_port = htons(simplePort);
/* connect to the address and port with our socket */
returnStatus = connect(simpleSocket, (struct sockaddr *)&simpleServer, sizeof(simpleServer));
if (returnStatus == 0) {
fprintf(stderr, "Connect successful!\n");
}
else {
fprintf(stderr, "Could not connect to address!\n");
close(simpleSocket);
exit(1);
}
/* get the message from the server */
do {
printf("get numb of data or terminate(write '0'): ");
fgets(buffsend,256,stdin);
n=atoi(buffsend);
if(n>6) {
printf("Error\n");
}
else {
for(i=0;i<n;i++) {
printf("insert number: ");
fgets(buffsend,256,stdin);
write(simpleSocket, buffsend, strlen(buffsend)+1);
}
} while((n!=0) && (n>0));
close(simpleSocket);
return 0;
}
而這個服務器爲：
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
int simpleSocket = 0;
int simplePort = 0;
int returnStatus = 0;
char buff[256];
char message[256];
int count;
struct sockaddr_in simpleServer;
if (2 != argc) {
fprintf(stderr, "Usage: %s <port>\n", argv[0]);
exit(1);
}
simpleSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (simpleSocket == -1) {
fprintf(stderr, "Could not create a socket!\n");
exit(1);
}
else {
fprintf(stderr, "Socket created!\n");
}
/* retrieve the port number for listening */
simplePort = atoi(argv[1]);
/* setup the address structure */
/* use INADDR_ANY to bind to all local addresses */
memset(&simpleServer, '\0', sizeof(simpleServer));
simpleServer.sin_family = AF_INET;
simpleServer.sin_addr.s_addr = htonl(INADDR_ANY);
simpleServer.sin_port = htons(simplePort);
/* bind to the address and port with our socket */
returnStatus = bind(simpleSocket,(struct sockaddr *)&simpleServer,sizeof(simpleServer));
if (returnStatus == 0) {
fprintf(stderr, "Bind completed!\n");
}
else {
fprintf(stderr, "Could not bind to address!\n");
close(simpleSocket);
exit(1);
}
/* lets listen on the socket for connections */
returnStatus = listen(simpleSocket, 5);
if (returnStatus == -1) {
fprintf(stderr, "Cannot listen on socket!\n");
close(simpleSocket);
exit(1);
}
while (1)
{
struct sockaddr_in clientName = { 0 };
int simpleChildSocket = 0;
int clientNameLength = sizeof(clientName);
/* wait here */
simpleChildSocket = accept(simpleSocket,(struct sockaddr *)&clientName, &clientNameLength);
if (simpleChildSocket == -1) {
fprintf(stderr, "Cannot accept connections!\n");
close(simpleSocket);
exit(1);
}
/* handle the new connection request */
/* write out our message to the client */
while(read(simpleChildSocket, buff, 256))
cont++;
printf("%s", buff);
printf("Data received: %d %s\n", cont, buff);
close(simpleChildSocket);
}
close(simpleSocket);
return 0;
}
的問題是與「爲」 cicle因爲每次我插入了一些，服務器的緩衝區被清空並只打印收到的最後一個號碼。 謝謝，如果提供解決方案。
請詳細說明這個問題。 「cicle」是什麼？顯示樣本數據等。另請參閱https://stackoverflow.com/help/mcve – handle
這是用於（i = 0; i
Pipox