diff --git a/models/server.go b/models/server.go
index 0c55b05..0409db5 100644
--- a/models/server.go
+++ b/models/server.go
@@ -8,7 +8,8 @@ import (
 
 type Server struct {
 	ID        uuid.UUID `gorm:"primaryKey" json:"id"`
-	Password  string    `gorm:"not null" json:"-"`
+	Name      string    `gorm:"not null" json:"name"`
+	Password  *string   `gorm:"" json:"-"`
 	CreatedAt time.Time `gorm:"autoCreateTime" json:"created_at"`
 	UpdatedAt time.Time `gorm:"autoUpdateTime" json:"updated_at"`
 }
diff --git a/network/http/web/api/category.go b/network/http/web/api/category.go
index 939b534..8584557 100644
--- a/network/http/web/api/category.go
+++ b/network/http/web/api/category.go
@@ -1,10 +1,13 @@
 package api
 
 import (
+	"errors"
 	"go_oxspeak_server/models"
 	"go_oxspeak_server/network/http/handler"
+	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
 )
 
 type CategoryHandler struct {
@@ -26,21 +29,96 @@ func (h *CategoryHandler) RegisterRoutes(rg *gin.RouterGroup) {
 
 func (h *CategoryHandler) getCategories(c *gin.Context) {
 	var categories []models.Category
-	h.DB.Find(&categories)
+	result := h.DB.Find(&categories)
+	if result.Error != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, categories)
 }
 
 func (h *CategoryHandler) getCategory(c *gin.Context) {
+	id := c.Param("id")
+
 	var category models.Category
-	h.DB.Find(&category)
+	result := h.DB.First(&category, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Category not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, category)
 }
 
 func (h *CategoryHandler) addCategory(c *gin.Context) {
+	var req CreateCategoryRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
 
+	category := models.Category{
+		ServerID: req.ServerID,
+		Name:     req.Name,
+	}
+
+	if err := h.DB.Create(&category).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, category)
 }
 
 func (h *CategoryHandler) updateCategory(c *gin.Context) {
+	id := c.Param("id")
 
+	var category models.Category
+	result := h.DB.First(&category, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Category not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	var req UpdateCategoryRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	if err := h.DB.Model(&category).Updates(req).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update category"})
+		return
+	}
+
+	c.JSON(http.StatusOK, category)
 }
 
 func (h *CategoryHandler) deleteCategory(c *gin.Context) {
+	id := c.Param("id")
+
+	var category models.Category
+	result := h.DB.First(&category, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Category not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	if err := h.DB.Delete(&category).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to delete category"})
+		return
+	}
+
+	c.Status(http.StatusNoContent)
 }
diff --git a/network/http/web/api/category_dto.go b/network/http/web/api/category_dto.go
new file mode 100644
index 0000000..5aab897
--- /dev/null
+++ b/network/http/web/api/category_dto.go
@@ -0,0 +1,14 @@
+package api
+
+import "github.com/google/uuid"
+
+// DTOs pour Category
+
+type CreateCategoryRequest struct {
+	ServerID uuid.UUID `json:"server_id" binding:"required"`
+	Name     string    `json:"name" binding:"required"`
+}
+
+type UpdateCategoryRequest struct {
+	Name string `json:"name" binding:"required"`
+}
diff --git a/network/http/web/api/channel.go b/network/http/web/api/channel.go
index eaa5dd7..59a35fe 100644
--- a/network/http/web/api/channel.go
+++ b/network/http/web/api/channel.go
@@ -1,10 +1,13 @@
 package api
 
 import (
+	"errors"
 	"go_oxspeak_server/models"
 	"go_oxspeak_server/network/http/handler"
+	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
 )
 
 type ChannelHandler struct {
@@ -26,26 +29,102 @@ func (h *ChannelHandler) RegisterRoutes(rg *gin.RouterGroup) {
 }
 
 func (h *ChannelHandler) getChannels(c *gin.Context) {
-	var users []models.User
-	h.DB.Find(&users)
+	var channels []models.Channel
+	result := h.DB.Find(&channels)
+	if result.Error != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, channels)
 
 }
 
 func (h *ChannelHandler) getChannel(c *gin.Context) {
-	var user models.User
-	h.DB.Find(&user)
+	id := c.Param("id")
+	var channel models.Channel
+	result := h.DB.First(&channel, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Channel not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, channel)
 }
 
 func (h *ChannelHandler) addChannel(c *gin.Context) {
+	var req CreateChannelRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
 
+	channel := models.Channel{
+		ServerID:   req.ServerID,
+		CategoryID: req.CategoryID,
+		Type:       req.Type,
+		Name:       req.Name,
+	}
+	if req.Position != nil {
+		channel.Position = *req.Position
+	}
+
+	if err := h.DB.Create(&channel).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, channel)
 }
 
 func (h *ChannelHandler) updateChannel(c *gin.Context) {
-	var user models.User
-	h.DB.Find(&user)
+	id := c.Param("id")
+
+	var channel models.Channel
+	result := h.DB.First(&channel, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Channel not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	var req UpdateChannelRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	if err := h.DB.Model(&channel).Updates(req).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update channel"})
+		return
+	}
+
+	c.JSON(http.StatusOK, channel)
 }
 
 func (h *ChannelHandler) deleteChannel(c *gin.Context) {
-	var user models.User
-	h.DB.Find(&user)
+	id := c.Param("id")
+
+	var channel models.Channel
+	result := h.DB.First(&channel, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Channel not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	if err := h.DB.Delete(&channel).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to delete channel"})
+		return
+	}
+
+	c.Status(http.StatusNoContent)
 }
diff --git a/network/http/web/api/channel_dto.go b/network/http/web/api/channel_dto.go
new file mode 100644
index 0000000..386f4da
--- /dev/null
+++ b/network/http/web/api/channel_dto.go
@@ -0,0 +1,24 @@
+package api
+
+import (
+	"github.com/google/uuid"
+	"go_oxspeak_server/models"
+)
+
+// DTOs pour Channel
+
+type CreateChannelRequest struct {
+	ServerID   *uuid.UUID         `json:"server_id,omitempty"`
+	CategoryID *uuid.UUID         `json:"category_id,omitempty"`
+	Position   *int32             `json:"position,omitempty"`
+	Type       models.ChannelType `json:"type" binding:"required"`
+	Name       *string            `json:"name,omitempty"`
+}
+
+type UpdateChannelRequest struct {
+	ServerID   *uuid.UUID          `json:"server_id,omitempty"`
+	CategoryID *uuid.UUID          `json:"category_id,omitempty"`
+	Position   *int32              `json:"position,omitempty"`
+	Type       *models.ChannelType `json:"type,omitempty"`
+	Name       *string             `json:"name,omitempty"`
+}
diff --git a/network/http/web/api/message.go b/network/http/web/api/message.go
index cb53658..d7b93fc 100644
--- a/network/http/web/api/message.go
+++ b/network/http/web/api/message.go
@@ -1,10 +1,13 @@
 package api
 
 import (
+	"errors"
 	"go_oxspeak_server/models"
 	"go_oxspeak_server/network/http/handler"
+	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
 )
 
 type MessageHandler struct {
@@ -26,21 +29,96 @@ func (h *MessageHandler) RegisterRoutes(rg *gin.RouterGroup) {
 
 func (h *MessageHandler) getMessages(c *gin.Context) {
 	var messages []models.Message
-	h.DB.Find(&messages)
+	result := h.DB.Find(&messages)
+	if result.Error != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, messages)
 }
 
 func (h *MessageHandler) getMessage(c *gin.Context) {
+	id := c.Param("id")
 	var message models.Message
-	h.DB.Find(&message)
+	result := h.DB.First(&message, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Message not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, message)
 }
 
 func (h *MessageHandler) addMessage(c *gin.Context) {
+	var req CreateMessageRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
 
+	message := models.Message{
+		ChannelID: req.ChannelID,
+		UserID:    req.UserID,
+		Content:   req.Content,
+		ReplyToID: req.ReplyToID,
+	}
+
+	if err := h.DB.Create(&message).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, message)
 }
 
 func (h *MessageHandler) updateMessage(c *gin.Context) {
+	id := c.Param("id")
 
+	var message models.Message
+	result := h.DB.First(&message, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Message not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	var req UpdateMessageRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	if err := h.DB.Model(&message).Updates(req).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update message"})
+		return
+	}
+
+	c.JSON(http.StatusOK, message)
 }
 
 func (h *MessageHandler) deleteMessage(c *gin.Context) {
+	id := c.Param("id")
+	var message models.Message
+	result := h.DB.First(&message, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Message not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	if err := h.DB.Delete(&message).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to delete message"})
+		return
+	}
+
+	c.Status(http.StatusNoContent)
 }
diff --git a/network/http/web/api/message_dto.go b/network/http/web/api/message_dto.go
new file mode 100644
index 0000000..964899c
--- /dev/null
+++ b/network/http/web/api/message_dto.go
@@ -0,0 +1,17 @@
+package api
+
+import "github.com/google/uuid"
+
+// DTOs pour Message
+
+type CreateMessageRequest struct {
+	ChannelID uuid.UUID  `json:"channel_id" binding:"required"`
+	UserID    uuid.UUID  `json:"user_id" binding:"required"`
+	Content   string     `json:"content" binding:"required"`
+	ReplyToID *uuid.UUID `json:"reply_to_id,omitempty"`
+}
+
+type UpdateMessageRequest struct {
+	Content   string     `json:"content" binding:"required"`
+	ReplyToID *uuid.UUID `json:"reply_to_id,omitempty"`
+}
diff --git a/network/http/web/api/server.go b/network/http/web/api/server.go
index 2be02c5..5237256 100644
--- a/network/http/web/api/server.go
+++ b/network/http/web/api/server.go
@@ -1,10 +1,13 @@
 package api
 
 import (
+	"errors"
 	"go_oxspeak_server/models"
 	"go_oxspeak_server/network/http/handler"
+	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
 )
 
 type ServerHandler struct {
@@ -17,30 +20,109 @@ func NewServerHandler(h *handler.Handler) *ServerHandler {
 
 func (h *ServerHandler) RegisterRoutes(rg *gin.RouterGroup) {
 	server := rg.Group("/server")
-	server.GET("/", h.getServers)
-	server.GET("/:id/", h.getServer)
-	server.POST("/", h.addServer)
-	server.PUT("/:id/", h.updateServer)
-	server.DELETE("/:id/", h.deleteServer)
+	server.GET("/", h.serverList)
+	server.GET("/:id/", h.serverDetail)
+	server.POST("/", h.serverAdd)
+	server.PUT("/:id/", h.serverUpdate)
+	server.DELETE("/:id/", h.serverDelete)
 }
 
-func (h *ServerHandler) getServers(c *gin.Context) {
+func (h *ServerHandler) serverList(c *gin.Context) {
 	var servers []models.Server
-	h.DB.Find(&servers)
+	result := h.DB.Find(&servers)
+	if result.Error != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, servers)
 }
 
-func (h *ServerHandler) getServer(c *gin.Context) {
+func (h *ServerHandler) serverDetail(c *gin.Context) {
+	id := c.Param("id")
+
 	var server models.Server
-	h.DB.Find(&server)
+	result := h.DB.First(&server, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Server not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, server)
 }
 
-func (h *ServerHandler) addServer(c *gin.Context) {
+func (h *ServerHandler) serverAdd(c *gin.Context) {
 
+	var req CreateServerRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// construire le modèle
+	server := models.Server{
+		Name:     req.Name,
+		Password: req.Password,
+	}
+
+	if err := h.DB.Create(&server).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, server)
 }
 
-func (h *ServerHandler) updateServer(c *gin.Context) {
+func (h *ServerHandler) serverUpdate(c *gin.Context) {
+	id := c.Param("id")
 
+	var server models.Server
+	result := h.DB.First(&server, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Server not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	var req UpdateServerRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	if err := h.DB.Model(&server).Updates(req).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update server"})
+		return
+	}
+
+	c.JSON(http.StatusOK, server)
 }
 
-func (h *ServerHandler) deleteServer(c *gin.Context) {
+func (h *ServerHandler) serverDelete(c *gin.Context) {
+	id := c.Param("id")
+
+	var server models.Server
+	result := h.DB.First(&server, "id = ?", id)
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "Server not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	if err := h.DB.Delete(&server).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to delete server"})
+		return
+	}
+
+	c.Status(http.StatusNoContent)
 }
diff --git a/network/http/web/api/server_dto.go b/network/http/web/api/server_dto.go
new file mode 100644
index 0000000..6912668
--- /dev/null
+++ b/network/http/web/api/server_dto.go
@@ -0,0 +1,11 @@
+package api
+
+type CreateServerRequest struct {
+	Name     string  `json:"name" binding:"required"`
+	Password *string `json:"password,omitempty"`
+}
+
+type UpdateServerRequest struct {
+	Name     string  `json:"name" binding:"required"`
+	Password *string `json:"password,omitempty"`
+}
diff --git a/network/udp/server.go b/network/udp/server.go
index 9be38d0..c1f3a4d 100644
--- a/network/udp/server.go
+++ b/network/udp/server.go
@@ -54,8 +54,20 @@ func (s *Server) Run() error {
 		_ = conn.SetWriteBuffer(8 * 1024 * 1024)
 	}
 
-	fmt.Println("[udp] listening on", s.bindAddr, "with", len(s.conns), "worker(s)")
+	fmt.Println("[udp] listening on", s.bindAddr, "with", len(s.conns), "worker socket(s)")
 
+	// Cas Windows : listenUDP a créé une seule socket,
+	// on lance workerCount goroutines sur la même conn.
+	if len(s.conns) == 1 {
+		conn := s.conns[0]
+		for workerID := 0; workerID < workerCount; workerID++ {
+			s.wg.Add(1)
+			go s.workerLoop(workerID, conn)
+		}
+		return nil
+	}
+
+	// Cas Unix : une conn par worker (SO_REUSEPORT).
 	for workerID, conn := range s.conns {
 		s.wg.Add(1)
 		go s.workerLoop(workerID, conn)
@@ -102,8 +114,7 @@ func (s *Server) workerLoop(workerID int, conn *net.UDPConn) {
 	}
 }
 
-// handlePacket reçoit maintenant directement la conn du worker.
-// Aucun hop supplémentaire : le paquet reste dans la goroutine/conn du worker.
+// handlePacket reçoit la conn du worker.
 func (s *Server) handlePacket(conn *net.UDPConn, data []byte, addr *net.UDPAddr) {
 	if len(data) == 0 {
 		return
@@ -113,7 +124,6 @@ func (s *Server) handlePacket(conn *net.UDPConn, data []byte, addr *net.UDPAddr)
 
 	switch pt {
 	case PacketTypePing:
-		// exemple simple : echo du ping
 		_, _ = conn.WriteToUDP([]byte{byte(PacketTypePing)}, addr)
 
 	case PacketTypeConnect: