From 8ccc75b0d2187cd9e35913749de0ed00e9ef5931 Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Fri, 8 Sep 2000 16:42:11 +0000
Subject: [PATCH] Stop plink losing data at start of session

git-svn-id: svn://svn.tartarus.org/sgt/putty@577 cda61777-01e9-0310-a592-d414129be87e
---
 putty.h  |  1 +
 raw.c    |  7 +++++--
 ssh.c    | 11 +++++++++--
 telnet.c |  7 +++++--
 4 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/putty.h b/putty.h
index 8c69d905..f89aeac4 100644
--- a/putty.h
+++ b/putty.h
@@ -110,6 +110,7 @@ typedef struct {
     void (*size) (void);
     void (*special) (Telnet_Special code);
     SOCKET (*socket) (void);
+    int (*sendok) (void);
 } Backend;
 
 GLOBAL Backend *back;
diff --git a/raw.c b/raw.c
index 2c3e8522..cf4eaee1 100644
--- a/raw.c
+++ b/raw.c
@@ -215,7 +215,9 @@ static void raw_special (Telnet_Special code) {
     return;
 }
 
-SOCKET raw_socket(void) { return s; }
+static SOCKET raw_socket(void) { return s; }
+
+static int raw_sendok(void) { return 1; }
 
 Backend raw_backend = {
     raw_init,
@@ -223,5 +225,6 @@ Backend raw_backend = {
     raw_send,
     raw_size,
     raw_special,
-    raw_socket
+    raw_socket,
+    raw_sendok
 };
diff --git a/ssh.c b/ssh.c
index 7e02bacf..82d61e98 100644
--- a/ssh.c
+++ b/ssh.c
@@ -163,6 +163,7 @@ static struct ssh_hostkey *hostkey = NULL;
 int (*ssh_get_password)(const char *prompt, char *str, int maxlen) = NULL;
 
 static char *savedhost;
+static int ssh_send_ok;
 
 static enum {
     SSH_STATE_BEFORE_SIZE,
@@ -990,6 +991,7 @@ static int do_ssh_init(void) {
         ssh_version = 1;
         s_rdpkt = ssh1_rdpkt;
     }
+    ssh_send_ok = 0;
     return 1;
 }
 
@@ -1411,6 +1413,7 @@ static void ssh1_protocol(unsigned char *in, int inlen, int ispkt) {
     if (size_needed)
 	ssh_size();
 
+    ssh_send_ok = 1;
     while (1) {
 	crReturnV;
 	if (ispkt) {
@@ -1976,6 +1979,7 @@ static void do_ssh2_authconn(unsigned char *in, int inlen, int ispkt)
     /*
      * Transfer data!
      */
+    ssh_send_ok = 1;
     while (1) {
 	crReturnV;
 	if (ispkt) {
@@ -2312,7 +2316,9 @@ char *ssh_scp_init(char *host, int port, char *cmd, char **realhost)
     return NULL;
 }
 
-SOCKET ssh_socket(void) { return s; }
+static SOCKET ssh_socket(void) { return s; }
+
+static int ssh_sendok(void) { return ssh_send_ok; }
 
 Backend ssh_backend = {
     ssh_init,
@@ -2320,5 +2326,6 @@ Backend ssh_backend = {
     ssh_send,
     ssh_size,
     ssh_special,
-    ssh_socket
+    ssh_socket,
+    ssh_sendok
 };
diff --git a/telnet.c b/telnet.c
index 9e6e6cdb..283ea5b6 100644
--- a/telnet.c
+++ b/telnet.c
@@ -732,7 +732,9 @@ static void telnet_special (Telnet_Special code) {
     }
 }
 
-SOCKET telnet_socket(void) { return s; }
+static SOCKET telnet_socket(void) { return s; }
+
+static int telnet_sendok(void) { return 1; }
 
 Backend telnet_backend = {
     telnet_init,
@@ -740,5 +742,6 @@ Backend telnet_backend = {
     telnet_send,
     telnet_size,
     telnet_special,
-    telnet_socket
+    telnet_socket,
+    telnet_sendok
 };
-- 
2.11.0